Bolthole Index

Sullivan County, New Hampshire

Building permits, zoning and land rules in Sullivan County, New Hampshire

81Index Score / 100
#3 of 10 in New Hampshire

Sullivan County, New Hampshire requires building permits for work covered by state law, with administration handled through local enforcement arrangements rather than a county building department123. Sullivan County has no countywide zoning ordinance; town and city land-use rules vary45. NHDES approves septic plans throughout Sullivan County, while municipal health officers may impose additional septic requirements67.

At a glance

Building permit
State law requires one for covered work; local administration varies by municipality12
Building code
New Hampshire state building and fire codes apply statewide8
Zoning
No countywide ordinance; town and city rules vary45
Septic permits
NHDES approval is required before construction, subject to stated exceptions9
RV living
Private-parcel living is not settled countywide; campground use is temporary105
Tiny houses
Municipalities may allow qualifying tiny houses, subject to local land-use rules11
Owner-builder
Only a narrow enforcement exception; not a general code or permit exemption12
Private wells
Ordinary wells have completion reporting; no universal construction permit was confirmed13

Who to call

Also useful

Sullivan County Government

General county administration; the county FAQ directs building, fire and zoning information to municipalities and environmental matters to the state

603-863-2560

5 Nursing Home Dr, 1100 County Offices, Unity, NH 03743

Building permits

City of Claremont Building Safety and Codes Department

Building permits and code administration within the City of Claremont

603-542-7026

58 Opera House Square, Claremont, NH 03743

Septic permits

New Hampshire Department of Environmental Services (NHDES), Land Resource Management

State septic-system plan approval and inspection for Sullivan County

(603) 271-3503

29 Hazen Drive | Concord, NH | 03302-0095

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

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Do you need a building permit in Sullivan County, New Hampshire?

New Hampshire law requires a building permit before covered construction or renovation in Sullivan County, and the work must comply with the state building and fire codes18. Municipal enforcement arrangements vary: a local enforcement agency administers building permits and inspections where established, while the state fire marshal may enforce the building code upon written municipal request where no local agency or qualified third-party contract exists2. The code in effect when the building-permit application is received governs the permitted work14. Ask the parcel's municipality which building-permit application, inspections and fee schedule apply152.

Who issues building permits in Sullivan County, New Hampshire?

Sullivan County's FAQ directs building, fire and zoning questions to municipal or state offices; county administration is not the building-permit counter for an ordinary parcel16. Contact the parcel's town or city about its building-permit process and inspections2. In Claremont, most building, renovation and demolition activities require a city building permit; listed exemptions still remain subject to other code and ordinance requirements17. Claremont's Building Safety and Codes Department is the building-permit contact for property inside Claremont18. NHDES remains the septic-plan approval authority throughout Sullivan County, including Claremont, and municipal health officers may impose additional septic rules67. Building-permit fees follow the applicable local schedule15.

Does Sullivan County, New Hampshire have zoning?

Sullivan County has no countywide zoning ordinance; parcel rules depend on the municipality and zoning district45. State zoning authority does not supply a parcel's district map or dimensional standards; obtain those from the municipality19. In Grantham, RR3 lots require at least 5 acres and 300 feet of frontage, excluding water bodies, wetland soils and slopes over 20% from the lot-area calculation; Central Village Residential lots require 0.4 acre and 100 feet of frontage with similar exclusions2021. Grantham RR1 requires a 35-foot front setback and 10-foot side and rear setbacks, with 35 feet from both rights-of-way on corner lots22. Municipalities with zoning must allow one attached or detached accessory dwelling unit by right in districts allowing single-family dwellings, subject to applicable building, water and wastewater requirements23. The ADU space rule limits how low a municipality may set its maximum; it does not establish a statewide minimum dwelling size23.

How do septic permits work in Sullivan County, New Hampshire?

NHDES must approve septic plans before construction unless a stated statutory exception applies, while municipal health officers may also regulate local subsurface systems97. The installed system cannot be covered or used until NHDES or an authorized agent gives final approval24. Once operating, the tank must be inspected often enough to be pumped when combined sludge and surface scum reach one-third of its depth25. Sullivan County soils deserve early attention because only 9.2% are rated without severe limitations for a conventional drain field26. A composting or incinerating toilet avoids department approval only in a structure with neither internal plumbing nor supplied water27. Contact NHDES Land Resource Management for the state process28.

Can you live in an RV or tiny house in Sullivan County, New Hampshire?

We could not confirm a general private-parcel RV-living rule for Sullivan County; ask the parcel's municipal zoning office about occupancy during construction5. In Newport, a manufactured home or travel trailer at a construction site needs Zoning Board of Adjustment special-exception approval, for up to one year with a possible additional one-year extension29. New Hampshire recreational campgrounds allow temporary recreational occupancy, not permanent year-round residency; that rule does not establish permission to live in an RV on a private homesite10. Grantham recreational camping parks limit occupancy to 120 days in a 12-month period30. Effective September 13, 2026, municipalities may permit qualifying tiny houses, tiny houses on wheels or yurts as homes or ADUs, subject to local land-use and state water and wastewater rules; municipal permission is not automatic11. A qualifying tiny house is at most 600 square feet excluding lofts and must meet the tiny-home building-code provisions on a stable ground surface or foundation31.

What are the steps to build a home in Sullivan County, New Hampshire?

  1. Identify the parcel's town or city and obtain its zoning map, district standards and land-use approvals5.
  1. Ask that municipality which building-permit application, building inspections and fee schedule apply3215.
  1. Have the septic site evaluated early and submit the septic design to NHDES before construction926.
  1. Obtain any required municipal subdivision or site-plan approval32.
  1. Obtain the building permit before starting covered construction1.
  1. Schedule required building inspections and the final septic inspection; obtain any locally required certificate of occupancy before moving in22433.

What should you check before buying land in Sullivan County, New Hampshire?

Confirm the municipality and zoning district first, because building-permit administration, allowed uses, setbacks and lot standards are local rather than uniform across Sullivan County45. Verify legal road access and ask the town or state road authority whether a driveway permit is required; we could not confirm one rule covering every Sullivan County road. Ask the municipality about floodplain development because we could not confirm one countywide process. Test the septic concept before choosing a homesite: only 9.2% of county soils are rated without severe limitations for a conventional drain field26. For a private well, New Hampshire requires the contractor to file a completion record within 90 days, but the statewide rule does not establish a universal construction permit for every ordinary well13. Budget for an effective property-tax rate near 2.4% and a median annual bill near $5,6163435.

Watch-outs

  • Owning and occupying the residence does not create a general owner-builder exemption from the state building code or all permit and inspection requirements12.
  • Agricultural activities not expressly addressed in the zoning district are presumed permitted when they follow agricultural best practices and applicable law, but new or significantly expanded livestock operations, farm stands and agritourism may still need local land-use approval3637.
  • The normal-agriculture alteration-of-terrain exemption excludes conversion of previously nonagricultural land and activities within a larger nonagricultural development plan; other state and local requirements still apply38.
  • Manufactured housing cannot be excluded entirely by a municipality, but that protection does not make every residential lot eligible; ask the municipal zoning office which siting alternative applies39.

Sources

  1. Section 155-A:4 Permit Required, quoted and re-checked
  2. Chapter 155-A New Hampshire Building Code, quoted and re-checked
  3. NH RSA Chapter 155-A (New Hampshire Building Code) (2026 county census)
  4. Sullivan County Housing and Community Development Plan, quoted and re-checked
  5. sullivancountynh.gov, quoted and re-checked
  6. NH Department of Environmental Services - Septic Systems (2026 county census)
  7. RSA 485-A:37 Maintenance and Operation of Subsurface Septic Systems, quoted and re-checked
  8. RSA 155-A:2 State Building Code, quoted and re-checked
  9. RSA Chapter 485-A: Water Pollution and Waste Disposal, quoted and re-checked
  10. Chapter 216-I Recreational Campgrounds and Camping Parks, quoted and re-checked
  11. RSA 674:82 Definitions, quoted and re-checked
  12. Section 155-A:3 Enforcement mechanism, quoted and re-checked
  13. RSA 482-B:10 Record of Wells; Monitoring Wells (New Hampshire statewide rule), quoted and re-checked
  14. Chapter 155-A New Hampshire Building Code, quoted and re-checked
  15. Chapter 155-A New Hampshire Building Code, quoted and re-checked
  16. Sullivan County Government (sullivancountynh.gov)
  17. Claremont: City of Claremont: When Do I Need a Building Permit? (Sullivan County), quoted and re-checked
  18. City of Claremont Building Safety and Codes Department (claremontnh.com)
  19. gc.nh.gov, quoted and re-checked
  20. Grantham Zoning Ordinance, quoted and re-checked
  21. Grantham Zoning Ordinance, quoted and re-checked
  22. Grantham Zoning Ordinance, quoted and re-checked
  23. Section 674:72 Accessory Dwelling Units, quoted and re-checked
  24. Env-Wq 1004.06 ISDS Inspection Required, quoted and re-checked
  25. Env-Wq 1023.01 Septic Tank Inspection and Pumping Requirements, quoted and re-checked
  26. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  27. Env-Wq 1022.05 Composting and Incinerator Toilets, quoted and re-checked
  28. New Hampshire Department of Environmental Services (NHDES), Land Resource Management (des.nh.gov)
  29. Town of Newport, New Hampshire 2019 Zoning Ordinance, quoted and re-checked
  30. Grantham Zoning Ordinance, Recreational Camping Parks, quoted and re-checked
  31. gc.nh.gov, quoted and re-checked
  32. RSA 674:35 Power to Regulate Subdivisions, quoted and re-checked
  33. Saf-C 8104 Inspections and Certificate of Occupancy, quoted and re-checked
  34. Effective property tax rate: Bolthole Index county data
  35. Median property tax bill: Bolthole Index county data
  36. RSA 674:32-a — Presumption, quoted and re-checked
  37. gc.nh.gov, quoted and re-checked
  38. RSA 485-A:17 Terrain Alteration, quoted and re-checked
  39. Section 674:32 Manufactured Housing, quoted and re-checked

Written October 11, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Unlike 5 of its 6 neighbors, Sullivan County requires a building permit only in limited cases.

RuleSullivan CountyMerrimack CountyCheshire CountyHillsborough CountyBelknap CountyGrafton CountyCarroll County
Building permitLimitedRequiredRequiredRequiredRequiredLimitedRequired
County zoningNoYesNoYesNoNoNo
Septic permitsNHDESNHDESNHDESNH Dept. of Env. ServicesNHDESNH Dept. of Env. ServicesNHDES

County locator

Sullivan County in New Hampshire

81
County map
Sullivan County highlighted among the New Hampshire counties · colored by Index score

How Sullivan County scores

Seclusion60100% ev.
Self-Sufficiency66100% ev.
Admin Boringness5490% ev.
Durability81100% ev.
Property Autonomy78100% ev.
Carry Cost65100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$392kTypical home
2.4%Property tax
$5,219Land / acre
45.9"Annual rain
2.9% of yrsSevere drought
0.3 / yr (+0.3)Mid-century 100°F days
10.7 daysMid-century dry spell
1.83" (+9%)Mid-century 1-day rain
1.42×Wildfire change factor
100%Forward climate coverage
$1,400Home insurance / yr
0.3% / yrInsurance growth
1.07%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
26,604People within 30 min
1,871,950People within 2 hr
62,631Radius comparison (15 mi)
81.7People / sq mi
0.2%Federal land
62.8%Land at 15% slope or less
9.2%Soils rated "not limited" for septic (strict USDA rating)
30,069 acWorkable land screen
90.8%Wooded land
62.4 tonsBiomass / forest ac
44.2°FAvg temp

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Cities and towns in Sullivan County

Inside a city, town or township here, that government usually sets zoning and may issue its own building permits; the county’s rules above cover land outside them.

Not yet researched: Town of Acworth · Town of Charlestown · Town of Cornish · Town of Croydon · Town of Goshen · Town of Grantham · Town of Langdon · Town of Lempster · Town of Newport · Town of Plainfield · Town of Springfield · Town of Sunapee · Town of Unity · Town of Washington

Answers from the rulebook for Sullivan County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Sullivan County rules

  • County-wide zoningAbsent

    A Sullivan County zoning ordinance applying countywide or to county-administered land-use areas.

    • The official county plan was signed March 19, 2021; no later county zoning ordinance was located in the reviewed official county materials.
    • New Hampshire authorizes county zoning only in a county in which there are unincorporated towns or unorganized places.
    • If such an area exists, zoning ordinances would be filed with the clerk for the county commissioners for public inspection.
    “Sullivan County does not have a Master Plan and Ordinances”
  • Local zoningVaries (with conditions)

    Local zoning across Sullivan County, aggregating the zoning authorities and ordinances of its fourteen towns and one city; the county-level claim does not mean Sullivan County administers each municipal ordinance.

    • Zoning authority is exercised by the local legislative body of a city or town under RSA 674:16, rather than uniformly by Sullivan County.
    • Municipal ordinances may regulate building height, number of stories, building and structure size, lot size, lot coverage, yards, courts, open spaces, population density, and the location and use of land and buildings.
    • Municipal adoption or amendment follows the ordinance enactment procedures of RSA 675:2-5.
    • Claremont's official page states that its Zoning Board of Adjustment hears appeals involving zoning ordinances adopted under RSA 674:16 and may authorize variances and special exceptions subject to the stated statutory and ordinance conditions.
    • The source states RSA 674:16 paragraph VII is effective until September 13, 2026 and separately provides the version effective September 13, 2026; the source identifies amendments effective July 1, 2026 and September 13, 2026.
    “Sullivan County Government does not hold information related to violations from the building, fire and zoning department. In NH, this type of information is either held at the municipality office level and/or with NH State (i.e. Department of Environmental Services, if pertaining to an environmental issue).”

New Hampshire rules that apply here

  • Building permitRequired

    New construction and renovation of buildings, building components, and structures in Sullivan County under the New Hampshire state building code.

    • Before starting covered work, the person responsible must obtain a permit.
    • In municipalities that have adopted an enforcement mechanism, the permit must conform to the locally adopted process.
    • No permit may be issued unless the work complies with the state building code.
    • Permit issuance and fees are administered by an authorized county, town, city, or village district; the state fire marshal may provide permitting services where authorized or requested under the statute.
    • A specific exception applies to tents erected as accessory structures on property containing an owner-occupied one- or two-family dwelling.
    “I. Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
    One more reviewed finding on this topic
    • Required — Construction and renovation subject to New Hampshire's state building code, administered through the state building permit system where the municipality has not adopted a local enforcement mechanism, and buildings owned by the State, the community college system, or the university system.
      “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
  • Owner-builder exemptionConditional

    State building-permit and inspection requirements for owner-builders performing construction or renovation work in New Hampshire.

    • Before starting work described in RSA 155-A:2(I), the person responsible for the construction must obtain a permit.
    • In municipalities that have adopted a building-code enforcement mechanism, the permit conforms to the locally adopted process and must result in compliance with the state building code.
    • The building official has authority to perform inspections as may be necessary to assure compliance with the state building code.
    • The state building-permit system does not apply to construction and renovation of one- and two-family dwellings in municipalities that have not elected to enact a local ordinance or otherwise adopted procedures for enforcing the state building code; local permitting requirements may nevertheless apply where the municipality has adopted such an ordinance or procedure.
    • Separate permits are required for electrical, plumbing, mechanical, and fire-protection work in addition to a building permit when applicable under Saf-C 8100.
    • The sources do not create a statewide owner-builder exemption from permits or inspections.
    “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit. In municipalities that have adopted an enforcement mechanism pursuant to RSA 155-A:3, the permit under this section shall conform to the locally adopted process. No permit shall be issued that would not result in compliance with the state building code.”
    2 more reviewed findings on this topic
    • Conditional — A residence occupied by the owner and the owner's immediate family, but only with respect to paragraph I of RSA 155-A:3, which authorizes the local legislative body to establish a local enforcement agency.
      “The provisions of paragraph I shall not apply to a residence which is occupied by the owner and his or her immediate family, unless the condition of such premises constitutes a clear and imminent danger to the life or health of persons other than the occupant or occupants.”
    • Conditional — A property owner or the owner's agent performing plumbing in the owner's own single-family detached or townhouse residence, including new construction, and performing minor plumbing installations, repairs, or replacements on the owner's property; the statute also separately addresses fuel-gas fitting in an existing primary residence.
      “To a property owner or the property owner's agent who installs, repairs, or replaces plumbing in the property owner's own single-family detached or townhouse residence, including new construction, or any property owner or property owner's agent who makes minor installations, repairs, or replacements to the owner's property.”
  • Building code adoptedAdopted (with conditions)

    All buildings, building components, and structures constructed in New Hampshire, including construction, design, maintenance, use, alteration, renovation, rehabilitation, repair, removal, and demolition.

    • Compliance with both the state building code and state fire code is required.
    • The adopted code consists of the 2024 International Building Code, International Existing Building Code, International Plumbing Code, International Mechanical Code, International Swimming Pool and Spa Code, and International Residential Code; the 2018 International Energy Conservation Code; and the 2023 National Electrical Code.
    • The adoption includes amendments reviewed and approved by the state building code review board as of October 10, 2025, ratified by the legislature under RSA 155-A:10, and approved errata or errata-informed amendments.
    • The code in effect when the governing authority receives the required building-permit application remains in effect for the duration of the permitted work.
    • For 6 months after the effective date of a newly adopted code, applicants may elect to comply with either the code in effect immediately before the effective date or the newly adopted code, but may not combine the two codes.
    • The state building code is effective in all municipalities without further local modification, except as permitted by RSA 155-A:3 or another statute.
    • Local enforcement agencies may administer permits, inspections, and enforcement where authorized; local amendments may not be less stringent than the state building code and technical amendments are not permitted.
    • Buildings must also comply with applicable state or local building requirements and land-use restrictions, including subdivision regulations, use and location restrictions, density and dimensional limitations, and historic-district laws or ordinances.
    • Before starting work described in RSA 155-A:2, I, the responsible person must obtain a permit; in municipalities with an enforcement mechanism, the permit must conform to the locally adopted process.
    • For state-owned, community-college-system, or university-system buildings, permits, inspections, and certificates of occupancy are issued by the state fire marshal.
    • Where the state building code and state fire code conflict, the code creating the greater degree of life safety takes precedence, subject to RSA 155-A:10 review.

    effective date of current statutory amendment: 2026-07-01 00:01 · concurrency period after newly adopted code effective date: 6 months (Applicant may choose either the immediately preceding code or the newly adopted code, but not a combination.)

    “All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code.”
    4 more reviewed findings on this topic
    • Adopted (with conditions) — Buildings, building components, and structures constructed in Sullivan County and elsewhere in New Hampshire.
      “All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code.”
    • Adopted (with conditions) — Buildings, building components, and structures constructed in Sullivan County, subject to New Hampshire's statewide building and fire codes and the statutory local enforcement and permit framework.
      “All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code.”
    • Adopted (with conditions) — All buildings, building components, and structures constructed in Sullivan County, including construction, design, maintenance, use, alteration, renovation, rehabilitation, repair, removal, and demolition.
      “I. All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code.”
    • Adopted (with conditions) — Buildings, building components, and structures constructed in Sullivan County under New Hampshire's statewide building-code framework.
      “All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code. The construction, design, structure, maintenance, and use of all buildings or structures to be erected and the alteration, renovation, rehabilitation, repair, removal, or demolition of all buildings and structures previously erected shall be governed by the provisions of the state building code.”
  • InspectionsLimited

    Building inspections for construction and related work in Sullivan County under New Hampshire's statewide building code.

    • All buildings, building components, and structures constructed in New Hampshire must comply with the state building code and state fire code.
    • Inspection and enforcement are administered locally where a municipality has established a local enforcement agency.
    • A local enforcement agency has authority to inspect buildings, structures, construction sites, and other places in its jurisdiction.
    • Where there is no local enforcement agency or qualified third-party contract, the state fire marshal or designee may enforce the state building code upon written request of the municipality.
    • The state fire marshal issues permits and conducts inspections for buildings owned by the state, the community college system, or the university system.
    • Local building requirements, land-use restrictions, subdivision regulations, use and location restrictions, density and dimensional limitations, and historic-district laws or ordinances may also apply.
    “where there is no local enforcement agency [...] the state fire marshal or the state fire marshal's designee may enforce [...] upon written request of the municipality.”
    One more reviewed finding on this topic
    • Required — Work performed under the scope of building permits issued through the New Hampshire state building permit system.
      “Required inspections for work performed under the scope of the issued building permits shall be requested by the permit holder and performed by the fire marshal or designee at the appropriate times during the course of construction and prior to concealing any of the work.”
  • Certificate of occupancyLimited

    Buildings and projects administered under the state building permit system, and municipalities that enact a certificate-of-occupancy requirement under the state building code.

    • Under the state permit system, a certificate of occupancy is issued upon completion of work, compliance inspections under state and local codes, and receipt of required documentation.
    • Municipal regulations may require a certificate of occupancy before use or occupancy of a building or structure erected, remodeled, or undergoing a change or expansion of use.
    • The municipality is responsible for implementing and enforcing a locally enacted certificate-of-occupancy requirement.
    • New Hampshire energy-code compliance certification is required before occupancy when the energy code applies; municipalities without certificates of occupancy use the alternate certification process in Puc 1805.01(c).
    “Upon completion of the work, inspections for compliance with state and local codes by the fire marshal or designee and receipt of required documentation, a certificate of occupancy shall be issued.”
    One more reviewed finding on this topic
    • Limited — Buildings in Sullivan County permitted through the state fire marshal system, and buildings in municipalities that have enacted a certificate-of-occupancy requirement.
      “The regulations adopted pursuant to paragraph I may include a requirement for a certificate of occupancy to be issued prior to the use or occupancy of any building or structure that is erected, remodeled, or undergoes a change or expansion of use subsequent to the effective date of such requirement. The municipality shall be responsible for implementation and enforcement of the requirement under this paragraph.”
  • Zoning districtsPublished

    New Hampshire's statutory zoning-district framework, under which a local legislative body may divide a municipality into zoning districts and regulate buildings, structures, and land within those districts.

    • The statute supplies enabling authority and does not publish the actual district maps or district schedules for each municipality.
    • District boundaries, number, shape, area, and regulations are determined locally by the municipality's local legislative body.
    • Regulations must be uniform for each class or kind of building throughout each district, but regulations may differ between districts.
    • Local zoning remains a municipal-government responsibility.
    “The local legislative body may divide the municipality into districts of a number, shape and area as may be deemed best suited”
    One more reviewed finding on this topic
    • Partial — Zoning districts established by local legislative bodies under New Hampshire zoning authority; actual district maps and regulations for Sullivan County municipalities were not established by the cited state statute.
      “the local legislative body may divide the municipality into districts of a number, shape and area”
  • Minimum lot sizeDistrict specific

    New Hampshire municipalities and qualifying counties may adopt local zoning regulations governing lot sizes; the statute does not set a single statewide minimum lot size.

    • The actual minimum depends on the locally adopted zoning ordinance and district.
    • The cited statute authorizes local regulation and is not itself a numeric minimum-lot-size rule.
    “For the purpose of promoting the health, safety, or the general welfare of the community, the local legislative body of any city, town, or county in which there are located unincorporated towns or unorganized places is authorized to adopt or amend a zoning ordinance under the ordinance enactment procedures of RSA 675:2-5. The zoning ordinance shall be designed to regulate and restrict: [...] Lot sizes, the percentage of a lot that may be occupied, and the size of yards, courts and other open spaces;”
  • SetbacksDistrict specific

    New Hampshire municipalities and qualifying counties may adopt local zoning regulations governing yards and other open spaces that may include setback controls; the exact setback depends on the local ordinance and district.

    • The actual setback distance depends on the locally adopted zoning ordinance and district.
    • The cited statute authorizes local dimensional regulation and is not itself a numeric setback rule.
    “The zoning ordinance shall be designed to regulate and restrict: [...] Lot sizes, the percentage of a lot that may be occupied, and the size of yards, courts and other open spaces;”
  • Lot coverageDistrict specific

    New Hampshire municipalities and qualifying counties may adopt local zoning regulations limiting the percentage of a lot that may be occupied; the exact percentage depends on the local ordinance and district.

    • The actual lot-coverage limit depends on the locally adopted zoning ordinance and district.
    • The cited statute is an enabling provision and does not establish a statewide percentage.
    “The zoning ordinance shall be designed to regulate and restrict: [...] Lot sizes, the percentage of a lot that may be occupied, and the size of yards, courts and other open spaces;”
  • Building heightDistrict specific

    New Hampshire municipalities and qualifying counties may adopt local zoning regulations governing building height and number of stories; the exact height depends on the local ordinance and district.

    • The actual building-height limit depends on the locally adopted zoning ordinance and district.
    • The cited statute authorizes local regulation and does not establish a statewide height limit.
    “The zoning ordinance shall be designed to regulate and restrict: (a) The height, number of stories and size of buildings and other structures;”
  • Tiny homesLimited

    Innovative housing structures used as dwellings in Sullivan County municipalities, including tiny houses, tiny houses on wheels, and yurts.

    • RSA 674:83 authorizes but does not require a municipality to permit an innovative housing structure on an individual house lot where single-family dwellings are allowed or as an accessory dwelling unit under RSA 674:72.
    • The structure remains subject to all applicable municipal land-use requirements.
    • For zoning purposes, the structure must be treated as a single-family dwelling or accessory dwelling unit.
    • The structure must comply with applicable state laws and regulations for drinking-water supply and wastewater treatment and disposal.
    • A tiny house must provide permanent provisions for living, sleeping, eating, cooking, and sanitation; be 600 square feet or less excluding lofts; comply with the tiny-home provisions of the state building code; and be constructed on a stable ground surface or foundation.
    • A tiny house on wheels must be built on a trailer chassis without motive power and is not considered a camp trailer or recreational vehicle when constructed for human habitation.
    • A yurt must be a freestanding, round or similar-shaped tiny house constructed with contemporary materials and engineering for permanent or long-term residence.
    • An innovative housing structure constructed on the dwelling site must comply with the state building code.
    • For off-site construction, manufactured-element document review and inspection must comply with either the state building code or the modular-building requirements under RSA 205-C.
    • The effective date stated by the cited statutes is September 13, 2026.

    maximum tiny-house floor area excluding lofts: <= 600 square feet · effective date: 2026-09-13

    “A municipality may permit an innovative housing structure to be placed or erected on an individual house lot where single-family dwellings are allowed”
    3 more reviewed findings on this topic
    • Limited — Tiny houses, tiny houses on wheels, and yurts used as dwelling units in Sullivan County municipalities, including incorporated towns and unincorporated areas where the applicable municipality allows the use.
      “A municipality may permit an innovative housing structure [...] subject to all applicable land use requirements.”
    • Limited — Innovative housing structures, including tiny houses, tiny houses on wheels, and yurts, proposed as dwellings or accessory dwelling units in Sullivan County municipalities.
      “I. A municipality may permit an innovative housing structure to be placed or erected on an individual house lot where single-family dwellings are allowed, or to be used as an accessory dwelling unit pursuant to RSA 674:72, subject to all applicable land use requirements.”
    • Allowed (with conditions) — Innovative housing structures, including tiny houses, tiny houses on wheels, and yurts, in Sullivan County and elsewhere in New Hampshire.
      “[RSA 674:83 effective Sept. 13, 2026.] 674:83 Location and Use. – I. A municipality may permit an innovative housing structure to be placed or erected on an individual house lot where single-family dwellings are allowed, or to be used as an accessory dwelling unit pursuant to RSA 674:72, subject to all applicable land use requirements. II. Innovative housing structures shall be treated as single-family dwellings or accessory dwelling units for zoning purposes and shall meet all applicable state laws and regulations regarding drinking water supply and wastewater treatment and disposal.”
  • Manufactured homesLimited

    Siting and residential occupancy of manufactured housing in Sullivan County municipalities that adopt land-use control measures.

    • A municipality may choose which statutory location alternative applies: (1) individual lots; (2) manufactured housing parks and subdivisions created for manufactured housing on individually owned lots as a paired option; or (3) all 3 types of locations.
    • The selected location type or types must generally be available in most, but not necessarily all, residentially zoned land areas and lots.
    • Individual-lot manufactured housing must comply with the lot-size, frontage, space, and other reasonable controls applicable to conventional single-family housing in the same district.
    • A special exception or special permit is not required for individual-lot manufactured housing or manufactured-housing subdivisions unless the municipality requires the same approval for comparable single-family housing.
    • Manufactured housing parks must have reasonable and realistic lot-size and overall-density requirements.
    • Municipalities must allow reasonable and realistic expansion opportunities for manufactured housing parks existing as of July 1, 2024, without standards stricter than NFPA 501A for such expansion.
    • A municipality may not completely exclude manufactured housing by regulation, zoning ordinance, or other police power.
    • If a residence has been damaged by fire or other disaster, a manufactured home may be placed on that lot while the residence is rebuilt; occupancy ends 12 months after placement or upon issuance of a certificate of occupancy, whichever occurs first, and state and local water-supply and sewerage-disposal requirements apply.
    • The statute does not identify the selected alternative for any particular Sullivan County municipality.

    minimum general availability: most, but not necessarily all residentially zoned land areas and lots (municipality's selected statutory alternative) · disaster-rebuild occupancy period: <= 12 months (ends earlier upon certificate of occupancy) · existing manufactured housing park reference date: July 1, 2024 (expansion opportunities)

    “Municipalities shall afford reasonable and realistic opportunities for the siting of manufactured housing as required in subparagraph (b) and a municipality shall not exclude manufactured housing completely from the municipality by regulation, zoning ordinance or by any other police power.”
    One more reviewed finding on this topic
    • Limited — Siting and occupancy of manufactured housing on residential land in municipalities within Sullivan County and elsewhere in New Hampshire.
      “Municipalities shall afford reasonable and realistic opportunities for the siting of manufactured housing as required in subparagraph (b) and a municipality shall not exclude manufactured housing completely from the municipality by regulation, zoning ordinance or by any other police power.”
  • Accessory dwellingsAllowed (with conditions)

    One accessory dwelling unit per single-family dwelling, including one detached accessory dwelling unit, in Sullivan County municipalities subject to RSA 674:72 and local implementation.

    • A municipality with zoning must allow one accessory dwelling unit as a matter of right in every zoning district permitting single-family dwellings.
    • If a zoning ordinance has no accessory-dwelling provisions, one accessory dwelling unit is deemed a permitted accessory use as a matter of right; no municipal permits or conditions are required other than building permits if required by statute.
    • A municipality may prohibit accessory dwelling units associated with multiple attached single-family dwellings, such as townhouses, and may prohibit accessory dwelling units on rented or leased land.
    • Municipal regulations applicable to single-family dwellings also apply, but may not be more restrictive for accessory dwelling units than for single-family use in the same district.
    • Adequate water supply and sewage disposal must be provided under RSA 485-A:38; a sewage-disposal approval application must be submitted before construction when applicable.
    • A municipality may require owner occupancy of one unit and may require up to one additional parking space per accessory dwelling unit where parking is required for the principal dwelling.
    • The total accessory-dwelling living space may not exceed 950 square feet unless otherwise authorized by the municipality; the municipality may not restrict total living space to less than 750 square feet. This is a limit on the municipality's restriction, not a statewide minimum floor-area requirement.
    • A municipality may not require a familial relationship between occupants and may not limit an accessory dwelling unit to one bedroom.
    • One detached accessory dwelling unit must be permitted under RSA 674:73 and must comply with RSA 674:72, IV through IX.
    • Accessory dwelling units converted from existing structures must be allowed, subject to the statutory eligibility rules for nonconforming setbacks and lot coverage.
    • The cited statutes do not establish the individual Sullivan County municipal ordinances or health-and-safety conditions.

    accessory dwelling units per single-family dwelling: 1 unit (municipality is not required to allow more than one) · default maximum total living space: <= 950 square feet (unless otherwise authorized by municipality) · minimum permitted municipal maximum: >= 750 square feet (limits how low a municipality may set its maximum; not a statewide minimum dwelling size)

    “A municipality that adopts a zoning ordinance pursuant to the authority granted in this chapter shall allow accessory dwelling units in all zoning districts that permit single-family dwellings. One accessory dwelling unit, which may be either attached or detached, shall be allowed as a matter of right.”
    One more reviewed finding on this topic
    • Allowed (with conditions) — Accessory dwelling units associated with single-family dwellings in New Hampshire municipalities, including municipalities in Sullivan County.
      “A municipality that adopts a zoning ordinance pursuant to the authority granted in this chapter shall allow accessory dwelling units in all zoning districts that permit single-family dwellings. One accessory dwelling unit, which may be either attached or detached, shall be allowed as a matter of right.”
  • Who permits septicMixed

    Statewide administration of sewage and waste disposal system approvals in New Hampshire.

    • The New Hampshire Department of Environmental Services approves sewage and waste disposal plans.
    • Applicants must also submit locally approved plans where required by local planning boards or other local bodies.
    • DES may delegate inspections to municipal health officers, building inspectors, or other qualified local officials.
    “In all cases involving inspection of sewage or waste disposal systems in cities or towns which employ a full time health officer and/or building inspector, the department may delegate to such officer or inspector the responsibility for inspecting the proposed system as required under paragraph I of this section.”
    One more reviewed finding on this topic
    • Mixed — Subsurface sewage and waste disposal systems in Sullivan County and statewide New Hampshire.
      “The health officer may make, in the manner provided in RSA 147:1, such regulations as necessary to ensure the safety and adequacy of subsurface sanitary disposal systems within the municipality. Nothing in this section shall be construed to limit the authority conferred upon the department of environmental services under RSA 485-A.”
  • Septic permitRequired

    Construction of a building from which sewage or other wastes will discharge, or construction of a sewage or waste disposal system, including systems in Sullivan County.

    • Prior NHDES approval of plans and specifications is required before construction.
    • Local government water-supply and sewage-disposal requirements may require prior local approval and written certification.
    • A replacement system in failure is exempt from the local-compliance certification requirement in RSA 485-A:32, II-a.
    • No plans and specifications are required when the proposed system will connect to a public sewer system under RSA 485-A:33, I.
    • Repair or replacement in-kind may qualify for a permit by rule only if the RSA 485-A:33, IV criteria are met.
    “This exemption in no way relieves any person from responsibility for obtaining approval under this chapter for construction of individual or other sewage or waste disposal systems or both in any exempted lots.”
    One more reviewed finding on this topic
    • Required — Construction of a building from which sewage or other wastes will discharge, or construction of a sewage or waste disposal system, statewide in New Hampshire.
      “No person shall construct any building from which sewage or other wastes will discharge or construct a sewage or waste disposal system without prior approval of the plans and specifications of the sewage or waste disposal system by the department.”
  • Septic inspectionRequired

    Construction, operation, and maintenance of subsurface sewage disposal systems statewide in New Hampshire.

    • Final inspection and approval are required before a system is covered or placed in operation.
    • DES may delegate proposed-system inspections to qualified municipal officials.
    • Septic tanks must be inspected for sludge and surface-scum accumulation at a frequency sufficient to permit pumping when the combined thickness reaches one-third or more of tank depth.
    • The quoted operating rule is Env-Wq 1023.01.

    combined sludge and surface scum threshold: >= 1 third of tank depth

    “Septic tanks shall be inspected for accumulation of sludge and surface scum at a frequency sufficient to allow the tank to be pumped by a licensed septage hauler when the combined thickness of the sludge and surface scum equal 1/3 or more of the tank depth.”
    2 more reviewed findings on this topic
    • Required — Constructed individual sewage disposal systems in Sullivan County and statewide New Hampshire.
      “The constructed sewage or waste disposal systems shall be in strict accordance with approved plans, and the facilities shall not be covered or placed in operation without final inspection and approval by an authorized agent of the department.”
    • Required — Septic tanks operating in Sullivan County and statewide New Hampshire.
      “Septic tanks shall be inspected for accumulation of sludge and surface scum at a frequency sufficient to allow the tank to be pumped by a licensed septage hauler when the combined thickness of the sludge and surface scum equal 1/3 or more of the tank depth.”
  • Off-grid sanitationAllowed (with conditions)

    Composting or incinerator toilets in structures in Sullivan County and statewide New Hampshire.

    • The structure must have no internal plumbing and no supplied water service to avoid department approval.
    • If the structure has internal plumbing and water service from a drilled well, internal or external water storage tank, or municipal water system, an ISDS with NHDES operational approval is required even if the toilet is not connected to the ISDS.
    • Maintenance and operation must follow the manufacturer's standards and specifications.
    • Waste disposal must comply with applicable state rules and local law.
    • The rules state an effective date of February 1, 2026 and expiration date of February 1, 2036.
    “Composting toilets and incinerator toilets in structures that do not have internal plumbing and that do not have a supplied water service to the building shall not require approval by the department.”
    One more reviewed finding on this topic
    • Limited — Composting or incinerator toilets in New Hampshire structures.
      “Composting toilets and incinerator toilets in structures that do not have internal plumbing and that do not have a supplied water service to the building shall not require approval by the department.”
  • Well permitLimited

    Private and other water wells constructed in New Hampshire, including special requirements for open-loop geothermal wells.

    • Within 90 days after completion, the water well contractor must provide the New Hampshire Water Well Board a well completion record containing the specified location, construction, yield, use, and contractor information.
    • Open-loop geothermal wells require a groundwater discharge permit under Env-Wq 402.33 through Env-Wq 402.36.
    • The reviewed sources establish reporting and special-purpose permit requirements; they do not establish a universal construction permit requirement for every ordinary private well.

    well completion record deadline: 90 days after completion

    “An owner of an open loop geothermal well shall obtain a groundwater discharge permit in accordance with Env-Wq 402.33 through Env-Wq 402.36.”
  • Mandatory utility hookupConditional

    Buildings occupied or used for dwelling, office, store, theater, public hall, sleeping apartment, or tourist cabin in New Hampshire.

    • Connection to a public sewer is required if one is within 100 feet.
    • If no public sewer is within 100 feet, wastewater must be conveyed underground or in another non-offensive manner.
    • Cities, towns, and village districts may increase the 100-foot distance by ordinance or regulation.
    • Local municipal health officials may approve privies and may require further DES approval.
    • Municipalities may grant waivers for adequate alternative sewage systems complying with state and local rules and approved for construction by DES after January 1, 1985.

    public sewer connection distance: <= 100 feet (Municipalities may increase the distance by ordinance or regulation.)

    “unless said building shall be provided with suitable drains or sewers for conveying waste water and sewage away from the premises into some public sewer, if there be one within 100 feet thereof, and if not, for conveying it away underground or in some other manner that will not be offensive.”
  • Agricultural exemptionConditional

    New, re-established, or expanded agricultural operations and activities subject to local building and site requirements in New Hampshire.

    • Agricultural operations are not categorically exempt from dimensional standards, setbacks, driveway and traffic regulations, parking, noise, odor, vibration, or sign regulations.
    • A waiver may be required where literal application would effectively prohibit an agricultural use allowed by the statute or would otherwise be unreasonable in the agricultural context.
    • The waiver requires due notice and hearing by the board of adjustment, building code board of appeals, or other applicable local board.
    • The waiver must be limited to the extent necessary to reasonably permit the agricultural use or activity.
    • No waiver is required if it would have a demonstrated adverse effect on public health or safety or on the value of adjacent property.
    • The waiver continues only while the property is utilized for the permitted agricultural use or activity.
    • RSA 147 health-and-safety findings and the duties of the Department of Environmental Services under RSA 485 or RSA 485-A, and the Commissioner of Agriculture, Markets, and Food under Title XL, are preserved.
    • The statute does not affect regulation of sludge or septage.

    approval mechanism: waiver after due notice and hearing (only to the extent necessary to reasonably permit the agricultural use or activity) · adverse-effect limitation: demonstrated adverse effect on public health or safety, or on the value of adjacent property (waiver unavailable where this limitation applies)

    “the board of adjustment, building code board of appeals, or other applicable local board, after due notice and hearing, shall grant a waiver”
    8 more reviewed findings on this topic
    • Available (with conditions) — Normal agricultural operations in Sullivan County that would otherwise require a permit under RSA 485-A:17 for alteration of terrain.
      “Normal agricultural operations shall be exempt from the provisions of this section.”
    • Conditional — Agricultural operations and activities in Sullivan County where local zoning does not explicitly address the agricultural operation or activity, and to existing agricultural uses qualifying under RSA 674:32-a.
      “such operations or activities shall be deemed to be permitted there, as either a primary or accessory use”
    • Conditional — Agricultural operations or activities in Sullivan County where the activity is defined in RSA 21:34-a and is not explicitly addressed in the applicable zoning district or location.
      “respect to any zoning district or location, such operations or activities shall be deemed to be permitted there, as either a primary or accessory use”
    • Available — Normal agricultural operations subject to New Hampshire's alteration-of-terrain statute, including operations in Sullivan County.
      “Normal agricultural operations shall be exempt from the provisions of this section.”
    • Available (with conditions) — Agricultural operations or activities in a New Hampshire zoning district or location where they are not explicitly addressed.
      “In accordance with RSA 672:1, III-d, whenever agricultural operations or activities as defined in RSA 21:34-a are not explicitly addressed with respect to any zoning district or location, such operations or activities shall be deemed to be permitted there, as either a primary or accessory use, so long as conducted in accordance with best management practices guidelines adopted by the commissioner of the department of agriculture, markets, and food and with applicable federal and state laws, regulations, and rules.”
    • Available (with conditions) — Agricultural operations or activities under RSA 21:34-a that are not explicitly addressed in a local zoning district or location.
      “In accordance with RSA 672:1, III-d, whenever agricultural operations or activities as defined in RSA 21:34-a are not explicitly addressed with respect to any zoning district or location, such operations or activities shall be deemed to be permitted there, as either a primary or accessory use, so long as conducted in accordance with best management practices guidelines adopted by the commissioner of the department of agriculture, markets, and food and with applicable federal and state laws, regulations, and rules.”
    • Conditional — Existing agricultural uses and activities established pursuant to RSA 674:32-a, including expansion, alteration, or change to another agricultural use or activity.
      “Any agricultural use or activity which exists pursuant to RSA 674:32-a may without restriction be expanded, altered to meet changing technology or markets, or changed to another agricultural use or activity, as set forth in RSA 21:34-a, so long as any such expansion, alteration, or change complies with all federal and state laws, regulations, and rules, including agricultural best management practices guidelines adopted by the commissioner of the department of agriculture, markets, and food; subject, however, to the following limitations:”
    • Available — Normal agricultural operations otherwise subject to the terrain-alteration permitting provisions of RSA 485-A:17.
      “Normal agricultural operations shall be exempt from the provisions of this section.”
  • Subdividing landRegulated (with conditions)

    Subdivision of land in New Hampshire municipalities that have authorized planning-board subdivision jurisdiction under RSA 674:35.

    • Municipal authorization by ordinance or resolution is required.
    • The planning board acts under the enactment procedures of RSA 675:6.
    • The municipality may authorize preliminary review and approval or disapproval of subdivision plats and related street and utility plans.
    • The planning board may not limit the number of building permits except through the statutory timing, phased-development, or moratorium mechanisms identified in RSA 674:35, III.
    • The planning board retains authority to deny a subdivision application because it is scattered or premature.

    authorization instrument: ordinance or resolution · enactment procedure: RSA 675:6

    “The planning board of a municipality shall have the authority to regulate the subdivision of land under the enactment procedures of RSA 675:6.”
    3 more reviewed findings on this topic
    • Regulated (with conditions) — Subdivision of land in Sullivan County municipalities under New Hampshire's municipal planning-board framework.
      “The planning board of a municipality shall have the authority to regulate the subdivision of land under the enactment procedures of RSA 675:6.”
    • Regulated (with conditions) — Subdivision of land within New Hampshire municipalities, through locally authorized planning-board regulation under the state statutory framework.
      “The planning board of a municipality shall have the authority to regulate the subdivision of land under the enactment procedures of RSA 675:6.”
    • Regulated (with conditions) — Subdivision of land in New Hampshire where the municipality has authorized its planning board to regulate subdivision under RSA 675:6.
      “A municipality may by ordinance or resolution authorize the planning board to require preliminary review of subdivisions, and to approve or disapprove, in its discretion, plats, and to approve or disapprove plans showing the extent to which and the manner in which streets within subdivisions shall be graded and improved and to which streets water, sewer, and other utility mains, piping, connections, or facilities within subdivisions shall be installed.”
  • Short-term rentalsLimited

    Advertisements and operation of short-term rentals subject to New Hampshire meals and rooms taxation.

    • Print, display, publication, distribution, and online advertisements must include the operator's meals and rooms license number.
    • A violation may result in a warning that the operator's license may be revoked, suspended, or denied.
    • The warning must notify the operator of the obligation to obtain a meals and rooms license and pay the meals and rooms tax.
    • Subsequent violations may constitute sufficient cause for revocation, suspension, or denial of the license.
    • The statute does not change or alter the property's use for purposes of compliance with a local zoning ordinance.
    “Any advertisement for a short-term rental [...] shall include the meals and rooms license number of the operator, as defined in RSA 78-A:3.”
    One more reviewed finding on this topic
    • Limited — Short-term-rental advertising and operation in Sullivan County, subject to state meals-and-rooms taxation and applicable local zoning.
      “Any advertisement for a short-term rental [...] shall include the meals and rooms license number of the operator”
  • Permit feesPublished (with conditions)

    State building permit fees collected by the state fire marshal under the state building permit system.

    • Applies to construction and renovation of buildings and structures, except one- and two-family dwellings, in municipalities that have not adopted a local enforcement mechanism for the state building code, and to buildings and structures owned by the State, the community college system, or the university system.
    • Separate permits are required for electrical, plumbing, mechanical, and fire protection work.
    • New commercial construction building permit fee is $0.30 per gross square foot.
    • Electrical, plumbing, and mechanical permit fees are calculated by contracted construction cost and are not less than $75.
    • Fire protection system permit fee is $1.00 per device with a $35 minimum.
    • Re-inspection fees are $100 for building and fire protection permits; electrical, plumbing, and mechanical re-inspection fees are 10% of the calculated fee, not less than $100 and not more than $500.
    • Fees for other structures and uses are $1.00 per gross square foot with a $35 minimum; re-inspection fee is $100.

    new commercial building permit fee: 0.3 USD per gross square foot · electrical/plumbing/mechanical minimum permit fee: >= 75 USD · fire protection system permit fee: per 1 USD per device (minimum $35) · building/fire protection re-inspection fee: 100 USD per re-inspection · other structures and uses building permit fee: 1 USD per gross square foot (minimum $35)

    “The building permit fee shall be $.30 per gross square foot;”
    One more reviewed finding on this topic
    • Variable (with conditions) — Building permit, inspection, and certificate-of-occupancy fees under New Hampshire's state building code, including Sullivan County municipalities that administer the code.
      “A schedule of fees, or a provision authorizing the governing body to establish fees”
  • Permit processPublished (with conditions)

    Construction subject to New Hampshire’s state building code and building-permit requirements.

    • Before starting covered construction, the responsible person must obtain a permit.
    • In municipalities with an enforcement mechanism, the permit follows the locally adopted process.
    • The building official must approve or deny a completed application within 30 days; nonresidential applications or residential applications for more than 10 dwelling units must be approved or denied within 60 days.
    • State fire marshal applications must be filed at least 30 days before the intended construction start date when the state building permit system applies.
    • Applications require the prescribed form, property and applicant information, permit type, use and occupancy, work description, square footage, design-professional information, construction documents, and municipal planning or zoning approval when warranted.

    ordinary completed application decision deadline: 30 days (nonresidential applications or residential applications encompassing more than 10 dwelling units: 60 days) · state fire marshal application filing deadline: >= 30 days before intended construction start

    “Upon the submission of a completed application, the building official shall act to approve or deny a building permit within 30 days;”
    One more reviewed finding on this topic
    • Partial — Construction, alteration, renovation, repair, removal, or demolition of buildings and structures in Sullivan County, subject to local enforcement arrangements.
      “The building official shall have the authority to: [...] Issue building permits”
  • Campground & park staysTemporary only (with conditions)

    Recreational vehicles used at New Hampshire recreational campgrounds or camping parks, including any such facility in Sullivan County.

    • A recreational campground or camping park is for temporary occupancy for recreational dwelling purposes only, not permanent year-round residency.
    • Recreational trailers are defined as temporary dwellings for recreational, camping, travel, or seasonal use, not primarily for permanent dwelling.
    • Each recreational-vehicle campsite must provide at least 1,000 square feet, with or without connections to an approved sewage disposal system.
    • An approved disposal system, required toilet facilities, and sanitary-station or individual-sewage-connection arrangements are required under RSA 216-I:4.
    • Campers must register and may not remain beyond the departure date recorded at registration without the campground owner's consent.
    • The occasional commercial or noncommercial use of recreational vehicles on a parcel for not more than 7 days in a calendar year is excepted from the chapter, except for RSA 216-I:4, II; the landowner or responsible party must file a statement of compliance with the municipality within 7 days before each use.
    • The 7-day exception does not limit municipal authority to enforce local zoning and health-and-safety regulations.
    • The statute also provides an agricultural-fair exception, subject to RSA 216-I:4, II and a compliance statement filed with the municipality within 7 days before the event.
    • This state rule does not establish the Sullivan County municipalities' individual zoning or health-and-safety rules.

    RV campsite minimum area: >= 1000 square feet (per recreational-vehicle campsite) · occasional parcel use exception: <= 7 days per calendar year (compliance statement required within 7 days before each use)

    “"Recreational campground or camping park" means a parcel of land on which 2 or more campsites are occupied or are intended for temporary occupancy for recreational dwelling purposes only, and not for permanent year-round residency, excluding recreation camps as defined in RSA 170-E:55, I.”
    3 more reviewed findings on this topic
    • Temporary only (with conditions) — Recreational-vehicle occupancy in New Hampshire recreational campgrounds or camping parks, including any such facility in Sullivan County.
      ““Recreational campground or camping park” means a parcel of land on which 2 or more campsites are occupied or are intended for temporary occupancy for recreational dwelling purposes only, and not for permanent year-round residency, excluding recreation camps as defined in RSA 170-E:55, I.”
    • Limited — Temporary camping in New Hampshire recreational campgrounds or camping parks, including facilities in Sullivan County.
      “Except as provided in RSA 216-I:4, II, this chapter shall not apply to the occasional commercial or noncommercial use of recreational vehicles on parcels of lands if the parcels are used for not more than 7 days in any calendar year; however, the owner of the land or the party responsible for the land shall file a statement of compliance with the governing body for the municipality in which the parcel is located, stating the method of compliance with RSA 216-I:4, II, within 7 days prior to the commencement of each use.”
    • Temporary only (with conditions) — Recreational vehicles placed at New Hampshire recreational campgrounds or camping parks.
      “intended for temporary occupancy for recreational dwelling purposes only, and not for permanent year-round residency”
  • county building authorityLimited

    County building-permit authority for buildings erected on leased land within unincorporated towns or unorganized places.

    • The county must be a county in which there are located unincorporated towns or unorganized places.
    • The building must be erected on leased land located within an unincorporated town or unorganized place.
    • The county planning board must require the building permit under RSA 674:41(IV).
    • The county must, by resolution, authorize the planning board to issue building permits under this paragraph.
    • The permit is required regardless of the building's proximity to any street or highway.
    • Separately, RSA 155-A:4(I) requires the person responsible for covered construction to obtain a permit before starting work, and RSA 155-A:4(V) bars issuance of a building or occupancy permit for construction, remodeling, or maintenance that does not comply with applicable zoning ordinances, building codes, or planning-board regulations.
    • The state building code applies statewide, while RSA 155-A:3 describes local enforcement mechanisms as municipal and reserves permit and fee administrative amendments to municipalities.
    “every building which is erected on leased land [...] to have a building permit.”
    One more reviewed finding on this topic
    • General — New Hampshire counties in which there are located unincorporated towns or unorganized places may establish and administer local enforcement mechanisms for the state building code, including building permits and inspections.
      “"County" means the local legislative body of a county in which there are unincorporated towns or unorganized places. [...] The local legislative body, as defined in RSA 155-A:1, IX, is hereby empowered and authorized to establish a local enforcement agency, as defined in RSA 155-A:1, III, to enforce the state building code adopted under RSA 155-A.”
  • county zoning authorityGeneral

    New Hampshire counties in which there are located unincorporated towns or unorganized places may adopt or amend zoning ordinances governing those areas.

    • The authority is exercised by the county local legislative body under RSA 675:2-5 procedures.
    • The ordinance may regulate building height, stories, building and structure size, lot sizes, lot coverage, yards, courts, open spaces, population density, and the location and use of buildings, structures, and land.
    • The authority includes innovative land-use controls, including methods described in RSA 674:21.
    • The county may regulate and control development timing under RSA 674:22.
    • Amateur-radio antenna regulations must conform to the stated federal preemption, subject to the statutory exceptions in RSA 424:5, RSA 422-B, or other Title XXXIX provisions.
    • Accessory uses on private land may be regulated; unless specifically proscribed, aircraft takeoffs and landings on private land by the owner or a resident are a valid and permitted accessory use.
    • Home-based care must be allowed by right when applicable department requirements are met, and local ordinances may not differ from RSA 170-E or He-C 4002 requirements.
    • The county may regulate accessory parking but may not require more than one residential parking space per unit; from September 13, 2026, it also may not require that the space be garaged.
    • The county may not restrict dwelling occupancy below 2 occupants per bedroom or adopt/enforce specified relationship, marital-status, occupation, employment-status, or educational-status restrictions.
    • Private covenants are not overridden.
    “For the purpose of promoting the health, safety, or the general welfare of the community, the local legislative body of any city, town, or county in which there are located unincorporated towns or unorganized places is authorized to adopt or amend a zoning ordinance under the ordinance enactment procedures of RSA 675:2-5.”
    One more reviewed finding on this topic
    • Limited — A county in which unincorporated towns or unorganized places are located; authority is exercised by its local legislative body.
      “county in which there are located unincorporated towns or unorganized places is authorized to adopt or amend a zoning ordinance”

Inside cities and towns in Sullivan County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

  • Local zoningPresent (with conditions)

    Land-use zoning within the Town of Cornish, Sullivan County, New Hampshire.

    • The official page describes zoning by districts.
    • Uses may be permitted by right, prohibited, or allowed only by special exception or conditional or special use permit.
    “In each district, some uses are permitted as a right, some are prohibited, and others are allowed only by special exception or conditional or special use permit.”
  • Minimum lot sizeDistrict specific (with conditions)

    Lots in Grantham Central Village Residential District (CVRD).

    • Water bodies or wetlands soils and slope areas with an incline greater than 20 percent may not be included in the minimum lot-size calculation.
    • Minimum frontage is 100 feet.

    minimum lot area: >= 0.4 acre (Water bodies or wetlands soils and slope areas with an incline greater than 20 percent excluded from calculation.) · minimum street frontage: >= 100 feet

    “The minimum area if any lot shall be four tenths (0.4) of one acre in size.”
    One more reviewed finding on this topic
    • District specific (with conditions) — Lots in Grantham Rural Residential District Three (RR3).
      “The minimum area of any lot shall be five (5) acres in size.”
  • SetbacksDistrict specific (with conditions)

    Structures and related improvements in Grantham Rural Residential District One (RR1).

    • Front setback is 35 feet and side/rear setbacks are 10 feet.
    • Corner lots must be set back at least 35 feet from both rights-of-way.
    • The requirements apply to public or private roads, including Town-maintained Class V and Class VI roads.
    • Structures generally must be at least 75 feet from a water course or water body, subject to the listed dam, dock, bridge, and qualifying non-habitable accessory-structure exceptions.
    • Septic systems must be at least 75 feet from a water body or wetland unless approved by the New Hampshire Water Supply & Pollution Control Division.

    front setback: >= 35 feet (Corner lots require 35 feet from both rights-of-way.) · side setback: >= 10 feet · rear setback: >= 10 feet · water body or water course setback: >= 75 feet (Does not apply to a dam, dock, bridge, or qualifying separate non-habitable accessory structure.) · septic setback from water body or wetland: >= 75 feet (Unless approved by the New Hampshire Water Supply & Pollution Control Division.)

    “There shall be minimum distances between any structure and the boundary of any lot and public highway, street, or roadway right-of-way of thirty-five (35) feet at the frontage of the lot, and ten (10) feet at the sides and rear of the lot.”
    2 more reviewed findings on this topic
    • District specific (with conditions) — Structures in Grantham Rural Residential District Three (RR3).
      “There shall be minimum distances between any structure and the boundary of any lot and public highway, street, or roadway right-of-way of seventy-five (75) feet at the frontage of the lot, and thirty-five (35) feet at the sides and rear of the lot.”
    • District specific (with conditions) — Structures in Grantham Central Village Residential District (CVRD).
      “There shall be minimum distances between any structure of any lot and public highway, street, or roadway right-of -way of twenty-five (25) feet at the frontage of the lot and ten (10) feet at the sides and rear of the lot.”
  • Living in an RVTemporary only (with conditions)

    Recreational vehicle or trailer occupancy in a Recreational Camping Park in Grantham.

    • The use must be temporary, seasonal, and recreational.
    • The duration may not exceed 120 days within a 12-month period.
    • The park must have at least 10 acres.
    • Each tent, recreational vehicle, or trailer space must occupy at least 5,000 square feet and be at least 50 feet wide.
    • The park must provide safe access, service buildings with flush-type toilets, washrooms, a sewage dumping station, and a 75-foot buffer strip along lot boundaries and public roads.
    • State and local ordinances apply, whichever are more stringent, for toilet facilities and sewage disposal.

    maximum occupancy duration: <= 120 days within a 12-month period · minimum recreational camping park area: >= 10 acres · minimum space area: >= 5000 square feet · minimum space width: >= 50 feet

    “Only temporary, seasonal, and recreational use of not more than one hundred twenty (120) days duration within a twelve (12) month period is permitted.”
  • Manufactured homesLimited

    Placement and occupancy of manufactured homes on private property in the Town of Newport, Sullivan County, New Hampshire.

    • Private-property placement is allowed in districts specifically zoned for manufactured homes as living accommodations and in an approved manufactured-home park or subdivision, subject to foundation, storage-building, and enclosure requirements.
    • Placement is also allowed in an approved manufactured-home sales lot.
    • A manufactured home or travel trailer may be located at a construction site only upon Zoning Board of Adjustment special-exception approval, for no more than one year; one additional one-year extension may be granted.
    • All manufactured homes must comply with the HUD 1976 standards and the cited 1982 NC5BCS standards.

    construction-site occupancy period: <= 1 year (One additional one-year extension may be granted by the Board of Adjustment.) · additional extension: 1 year (Available only by Board of Adjustment approval.)

    “An additional extension of one year may be granted by the Board of Adjustment.”

Set by your town or city, not the county

In New Hampshire, zoning is adopted by each town or city, so Sullivan County has no county-wide answer on these. Find your town or city in the list of places on this page, or call its clerk or zoning administrator.

  • Minimum dwelling size

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Driveway access — Driveway access requirements for properties in Sullivan County, including access to municipal and state-maintained roads.
  • Building in a floodplain — Development in mapped or regulated floodplain areas in Sullivan County.

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Sullivan County, New Hampshire

Is Sullivan County a good place to live off-grid or homestead?

Sullivan County scores 81/100 on the Bolthole Index, a strong county profile. Its strengths: mixed durability signals and a stronger property-autonomy legal backdrop.

Do you need a building permit in Sullivan County, New Hampshire?

Sullivan County requires a building permit only in limited cases (such as floodplains or specific zones), and it has no county-wide zoning. Onsite septic is permitted by New Hampshire Department of Environmental Services (NHDES) Subsurface Systems Bureau. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Sullivan County, New Hampshire?

Land in Sullivan County runs about $5,219 per acre, based on the latest county data.

What is the water situation in Sullivan County?

Sullivan County gets about 45.9" of rain a year, with severe drought in roughly 2.9% of years.

How remote is Sullivan County?

A representative private-land location has about 26,604 people within a 30-minute drive and 1,871,950 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Sullivan compares in New Hampshire

Compare side-by-side →See all 10 New Hampshire counties ranked →