Bolthole Index

Belknap County, New Hampshire

Building permits, zoning and septic rules in Belknap County, New Hampshire

71Index Score / 100
#6 of 10 in New Hampshire

Covered construction in Belknap County, New Hampshire requires a building permit and compliance with state building and fire codes; municipalities with local enforcement use their own building-permit processes.12 Zoning is a municipal responsibility, so the parcel’s town or city determines the applicable land-use controls.3 The New Hampshire Department of Environmental Services (NHDES) handles septic approvals, with additional local approval where required.45

At a glance

Building permit
Required for construction covered by the state building code1
Zoning
Municipal responsibility; rules vary by town or city3
Septic permit
NHDES approval, plus local approval where required45
Owner-builder exemption
No blanket exemption from building permits or inspections6
Certificate of occupancy
May be required by the municipality before use or occupancy7
Septic design
Plans must come from a NH-licensed septic system designer8
Tiny home
A municipality may allow a qualifying structure where homes are allowed or as an ADU9
Manufactured home
Cannot be excluded entirely, but municipal siting rules apply10

Who to call

Building permits

City of Laconia Code Enforcement / Building Department

Example office only: Laconia is Belknap County's largest city and county seat, and its own Code Enforcement/Building Department issues building, electrical and demolition permits and certificates of occupancy for Laconia. Every other town in the county has its own separate office.

603-527-1293

45 Beacon Street E, City Hall, Laconia, NH 03246

Planning & zoning

City of Laconia Planning Department

Example office only, for Laconia: land use, development and zoning review, and support for the Planning Board and Zoning Board of Adjustment

603-527-1264

45 Beacon Street E, Laconia, NH 03246

Zoning

City of Laconia Zoning Department

Example office only, for Laconia: zoning-question assistance for property owners, sign-ordinance permitting, and enforcement of the Laconia zoning ordinance

603-527-1264

45 Beacon Street E, Laconia, NH 03246

Roads & driveways

City of Laconia driveway permits (Department of Public Works)

Example office only, for Laconia: driveway permits for new construction and for paving or resurfacing an existing driveway onto a city street

603-527-1270

45 Beacon Street E, Laconia, NH 03246

Septic permits

New Hampshire Department of Environmental Services (NHDES)

Statewide septic (subsurface disposal) system construction and operation approvals, including for Belknap 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 13, 2026.

Off-grid gear

Going off-grid in Belknap County means bringing your own water and power. The kit we’d start with:

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

Yes. The person responsible for construction covered by New Hampshire’s state building code must obtain a permit before work begins in Belknap County.11 The statewide code incorporates the 2024 building, existing-building, plumbing, mechanical, swimming-pool and residential codes, the 2018 energy code and the 2023 electrical code.12 Where a municipality has adopted an enforcement mechanism, its local permit process controls, and the permit cannot authorize work that violates the state building code.13 The code in effect when the application is received stays in effect through the permitted work; during the six months after a new code takes effect, an applicant may choose the prior or new code but cannot mix them.14 On subdivision or site-plan land, required streets and utilities generally must be complete before use or occupancy unless the planning board authorized different terms, so ask the planning board before you plan to move in.11

Who issues building permits in Belknap County, New Hampshire?

Start with the municipality containing the Belknap County parcel: where local building-code enforcement exists, the locally adopted building-permit process applies.15 Meredith issues its own building permits; construction there is not authorized until the permit is issued.16 Septic approval remains with NHDES, plus any required local approval.45 Laconia’s Code Enforcement/Building Department issues building, electrical and demolition permits and certificates of occupancy for Laconia; call 603-527-1293 or visit 45 Beacon Street E, City Hall, Laconia, NH 03246.17 Ask the town or city clerk elsewhere for the responsible building official. The building official must adopt a form or standards setting the minimum contents of a completed application, then approve or deny it within 30 days, or 60 days for nonresidential work or residential work covering more than 10 dwelling units.18 The municipality responsible for local enforcement sets building-permit fees; Alton lists a $20 minimum plus a $30 administration fee.1920 The separate state building-permit system for municipalities without local enforcement excludes one- and two-family dwellings, so do not assume the state fire marshal is the permit counter for an ordinary home.21 The state fire marshal does issue permits for state-owned, community-college-owned and university-owned buildings.11

Does Belknap County, New Hampshire have zoning?

Belknap County does not administer county zoning; planning, zoning and related regulations are municipal responsibilities.223 Meredith administers its own zoning, with district-specific use and dimensional rules.23 NHDES septic approval still applies inside Meredith, with local approval where required.424 Laconia administers its own zoning chapter inside city limits.25 Laconia’s Planning Department reviews development and zoning issues, while its Zoning Department answers property-owner questions and enforces the city ordinance.2627 Ask the parcel’s municipal planning or zoning office for its district, setbacks, lot coverage, height and minimum dwelling size; we could not confirm these requirements for every Belknap municipality.3 Alton requires a 75-foot planted boundary buffer with no camping for recreational campgrounds and camping parks; that standard is not a residential or countywide setback.28 Agricultural status does not remove all local review: new, re-established or significantly expanded livestock, farm-stand, retail or public-facing agritourism operations may need local approvals.29

Who issues septic permits in Belknap County, New Hampshire?

NHDES administers subsurface sewage-disposal requirements in Belknap County, while local authorities retain powers under other laws and may impose stricter standards.430 Before constructing a building that will discharge sewage or the disposal system itself, obtain NHDES approval of the plans and specifications; local approval may also be required.5 An expansion or change of use that increases the load on an existing system also requires an application showing that the system meets the stricter applicable state or town standard, or a compliant new-system design.31 A permitted New Hampshire septic designer must prepare and submit proposed plans.8 Final inspection and approval are required before covering or operating the system; NHDES must inspect within 7 business days after written notice that it is ready.32 Repairing or replacing an existing system in kind can use a permit-by-rule pathway, but only for a single-family residence with at most one accessory dwelling unit, no increase in sewage loading, a bed bottom at least 24 inches above the seasonal high water table, and prior NHDES approval of the existing system; construction waits until the application and permit by rule are received.33 NHDES may allow an inspected portion to be backfilled, but approval to operate waits until the entire system is installed and inspected.34 Only 3% of county soils avoid a severe limitation rating for a conventional drain field, so establish site feasibility early.35

Can you live in an RV or tiny home on your land in Belknap County?

We could not confirm a countywide rule allowing long-term RV occupancy or temporary camping on private land in Belknap County. Ask the municipality's zoning or planning office about the parcel's use, setbacks, minimum dwelling size and temporary occupancy during construction because Belknap County does not administer zoning.22 The Town of Alton shows how local the answer is: it allows no more than one recreational vehicle on a lot with an existing dwelling, for less than 6 months in a calendar year, with a building permit required after more than 10 consecutive days, and it does not allow an RV as the principal use of a lot outside a campground.36 A municipality may permit a qualifying innovative housing structure on a house lot where single-family homes are allowed or as an accessory dwelling unit, but local land-use and wastewater rules still apply.9 New Hampshire municipalities cannot exclude manufactured housing entirely, but they may apply the same reasonable lot, frontage and space controls used for conventional single-family homes in the district.10

How do you build a home in Belknap County, step by step?

  1. Identify the town or city containing the parcel, then ask its planning or zoning office for the district rules that apply.3
  2. Identify the road authority. A new or substantially altered access within specified state-highway rights-of-way needs a written New Hampshire Department of Transportation permit.37
  3. Hire a permitted New Hampshire septic system designer and obtain NHDES construction approval, plus any required local approval.85
  4. If the parcel needs a private well, hire a licensed water-well contractor; the contractor must file a completion report within 90 days after finishing the well.38
  5. File the building-permit application through the locally adopted process where the municipality has an enforcement mechanism, using the building official's required application contents.15
  6. Ask the building official which inspections are necessary, and do not cover or use the septic system before its final inspection and approval.3932
  7. Before moving in, confirm whether the municipality requires a certificate of occupancy.7

What should you check before buying land in Belknap County?

Confirm septic feasibility before treating a parcel as buildable: only 3% of Belknap County soils avoid a severe limitation rating for a conventional drain field.35 Verify the municipality, zoning district, setbacks, minimum lot and dwelling sizes and floodplain review directly with the town or city because Belknap County does not administer county zoning.3 Check whether the driveway enters a state-maintained road: construction or substantial alteration within specified state-highway rights-of-way needs a written state permit.37 Ask the local water and sewer providers what connections apply; we could not confirm one countywide utility-connection rule, although state rules preserve private-water options in qualifying situations.40 For a private well, budget for a licensed contractor and required completion reporting rather than assuming a separate property-owner permit was established.38 The median property-tax bill is about $4,897 a year at an effective rate near 1.4%.4142

Watch-outs

  • Belknap County’s municipal land-use rules and building-permit fees vary; ask the parcel’s town or city for the applicable ordinance, process and fee schedule.31519
  • A municipality may allow a qualifying tiny home, but local land-use rules and state water and wastewater requirements still control whether it can occupy a particular parcel.9
  • Permission to backfill an inspected portion of a septic system is not approval to operate: NHDES requires the entire system to be installed and inspected first.34

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. Chapter 672 — General Provisions, quoted and re-checked
  4. Section 485-A:38 Approval to Increase Load on a Sewage Disposal System, quoted and re-checked
  5. Chapter 485-A Water Pollution and Waste Disposal, quoted and re-checked
  6. RSA 155-A:4 — Permit Required (New Hampshire statewide rule), quoted and re-checked
  7. Chapter 155-A New Hampshire Building Code, quoted and re-checked
  8. New Hampshire Department of Environmental Services (NHDES) (des.nh.gov)
  9. Section 674:83 Location and Use, quoted and re-checked
  10. Section 674:32 Manufactured Housing, quoted and re-checked
  11. Section 155-A:4 Permit Required, quoted and re-checked
  12. Section 155-A:4 Permit Required, quoted and re-checked
  13. Section 155-A:4 Permit Required, quoted and re-checked
  14. Section 155-A:2 State Building Code, quoted and re-checked
  15. Section 155-A:4 Permit Required, quoted and re-checked
  16. Town of Meredith: Building Permit Application (Belknap County), quoted and re-checked
  17. City of Laconia Code Enforcement / Building Department (laconianh.gov)
  18. Section 155-A:4 Permit Required, quoted and re-checked
  19. Section 155-A:9 — Fees, quoted and re-checked
  20. Notice of Land Use Board Fees, quoted and re-checked
  21. Chapter 155-A New Hampshire Building Code (New Hampshire statewide rule), quoted and re-checked
  22. Belknap County, NH - Departments (2026 county census)
  23. Town of Meredith: Residential District (Belknap County), quoted and re-checked
  24. Town of Meredith: RSA 485-A:32 Prior Approval; Permits (Belknap County), quoted and re-checked
  25. Laconia: Chapter 235 Zoning - City of Laconia, NH (Belknap County), quoted and re-checked
  26. City of Laconia Planning Department (laconianh.gov)
  27. City of Laconia Zoning Department (laconianh.gov)
  28. Town of Alton Zoning Ordinance 2025, quoted and re-checked
  29. Section 674:32-b Existing Agricultural Uses and Activities, quoted and re-checked
  30. Env-Ws 1000-1028, quoted and re-checked
  31. Section 485-A:38 Approval to Increase Load on a Sewage Disposal System, quoted and re-checked
  32. Chapter 485-A Water Pollution and Waste Disposal, quoted and re-checked
  33. Chapter 485-A Water Pollution and Waste Disposal, quoted and re-checked
  34. Env-Wq 1000 rules, quoted and re-checked
  35. 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
  36. Town of Alton Zoning Ordinance 2025, quoted and re-checked
  37. Section 236:13 Driveways and Other Accesses to the Public Way, quoted and re-checked
  38. gc.nh.gov, quoted and re-checked
  39. Chapter 155-A New Hampshire Building Code, quoted and re-checked
  40. gc.nh.gov, quoted and re-checked
  41. Median property tax bill: Bolthole Index county data
  42. Effective property tax rate: Bolthole Index county data

Written October 13, 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 4 of its 6 neighbors, Belknap County has no countywide zoning.

RuleBelknap CountyMerrimack CountyStrafford CountyCarroll CountyGrafton CountyRockingham CountyHillsborough County
Building permitRequiredRequiredLimitedRequiredLimitedRequiredRequired
County zoningNoYesYesNoNoYesYes
Septic permitsNHDESNHDESNH Dept. of Env. ServicesNHDESNH Dept. of Env. ServicesNHDESNH Dept. of Env. Services

County locator

Belknap County in New Hampshire

71
County map
Belknap County highlighted among the New Hampshire counties · colored by Index score

How Belknap County scores

Seclusion37100% ev.
Self-Sufficiency68100% ev.
Admin Boringness5790% ev.
Durability76100% ev.
Property Autonomy78100% ev.
Carry Cost61100% 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 →

$520kTypical home
1.4%Property tax
$5,541Land / acre
47.4"Annual rain
4.3% of yrsSevere drought
0.6 / yr (+0.6)Mid-century 100°F days
11.2 daysMid-century dry spell
1.89" (+7.8%)Mid-century 1-day rain
1.4×Wildfire change factor
100%Forward climate coverage
$1,281Home insurance / yr
0.7% / yrInsurance growth
0.77%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
63,015People within 30 min
4,981,942People within 2 hr
96,156Radius comparison (15 mi)
161.8People / sq mi
0.5%Federal land
75.6%Land at 15% slope or less
3%Soils rated "not limited" for septic (strict USDA rating)
7,263 acWorkable land screen
78.8%Wooded land
67.3 tonsBiomass / forest ac
45.6°FAvg temp

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Cities and towns in Belknap 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 Alton · Town of Barnstead · Town of Belmont · Town of Center Harbor · Town of Gilford · Town of Gilmanton · Town of New Hampton · Town of Sanbornton · Town of Tilton

Answers from the rulebook for Belknap County

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

Belknap County rules

  • Local zoningVaries (with conditions)

    The countywide aggregate of municipal zoning controls across Belknap County; the county itself is not asserted to administer each local ordinance.

    • New Hampshire declares that planning, zoning, and related regulations are the responsibility of municipal government.
    • Applicable controls must be checked with the particular city, town, village district, or other local government for the parcel.
    • State building-code, septic, subdivision, shoreland, floodplain, and other state or local requirements may also apply independently of zoning.
    “The general court hereby finds and declares that: I. Planning, zoning and related regulations have been and should continue to be the responsibility of municipal government; II. Zoning, subdivision regulations and related regulations are a legislative tool that enables municipal government to meet more effectively the demands of evolving and growing communities;”
  • County-wide zoningAbsent

    Belknap County exercises no zoning authority; zoning is a municipal (town) function in New Hampshire and the county has no planning or zoning department.

    Belknap County, NH - Departments ↗Scouted from the county site, not yet independently re-checked

New Hampshire rules that apply here

  • Building permitRequired

    Construction covered by RSA 155-A:2 in Belknap County.

    • Before starting covered work, the responsible person must obtain a permit.
    • Municipalities with an adopted enforcement mechanism may apply their locally adopted permit process.
    • The building official must act on a completed application within 30 days, or within 60 days for nonresidential applications or residential applications encompassing more than 10 dwelling units.

    standard residential or nonresidential application decision period: 30 days (Residential applications encompassing more than 10 dwelling units and nonresidential applications have a 60-day period.) · large residential or nonresidential application decision period: 60 days (Applications encompassing more than 10 dwelling units or nonresidential applications.)

    “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
    3 more reviewed findings on this topic
    • Required — Construction work described in RSA 155-A:2 in Belknap County.
      “the person responsible for such construction shall obtain a permit.”
    • Required — Construction work described in RSA 155-A:2, I, including applicable residential construction in Belknap County.
      “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
    • 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.”
    One more reviewed finding on this topic
    • 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.”
    3 more reviewed findings on this topic
    • Adopted — Buildings, building components, and structures constructed in Belknap County.
      “shall comply with the state building code and state fire code.”
    • Adopted — Buildings, building components, and structures constructed in New Hampshire, including Belknap County.
      “All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code.”
    • Adopted (with conditions) — Construction subject to New Hampshire's state building code in Belknap County.
      “"New Hampshire building code" or "state building code" means the adoption by reference of the International Building Code 2024, the International Existing Building Code 2024, the International Plumbing Code 2024, the International Mechanical Code 2024, the International Energy Conservation Code 2018, the International Swimming Pool and Spa Code 2024 and the International Residential Code 2024, as published by the International Code Council Inc., and the National Electrical Code 2023, as published by the National Fire Protection Association, Inc.”
  • InspectionsLimited

    Inspection authority under the New Hampshire state building code statewide, administered through local building officials or other authorized enforcement mechanisms.

    • Municipalities must ensure by ordinance that implementation and enforcement includes a building official.
    • The building official may perform inspections as may be necessary to assure compliance; the statute does not require an inspection for every project.
    • The local enforcement agency must also accept and review construction documents, issue permits, and issue certificates of occupancy as applicable.
    “Perform inspections as may be necessary to assure compliance with the state building code;”
    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
  • 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”
  • 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 homesAllowed (with conditions)

    Innovative housing structures, including qualifying tiny-home-type structures, in municipalities within Belknap County.

    • A municipality may permit placement on an individual house lot where single-family dwellings are allowed or use as an accessory dwelling unit.
    • All applicable land-use requirements apply.
    • The structure must meet state drinking-water and wastewater-treatment and disposal laws and regulations.
    • RSA 674:83 states an effective date of September 13, 2026.
    “A municipality may permit an innovative housing structure to be placed or erected on an individual house lot”
  • Manufactured homesLimited

    Siting and occupancy of manufactured housing in New Hampshire municipalities, including the municipalities within Belknap County.

    • A municipality that adopts land use control measures must allow manufactured housing in most, but not necessarily all, land areas and lots in districts zoned for residential uses, under one of the statutory location alternatives.
    • Manufactured housing on individual lots must comply with lot size, frontage, space limitations, and other reasonable controls applicable to conventional single-family housing in the same district.
    • A special exception or special permit is not required unless the municipality requires one for comparable single-family housing.
    • Municipalities permitting manufactured housing parks must provide reasonable and realistic opportunities for their development.
    • Municipalities must allow reasonable and realistic opportunities to expand manufactured housing parks existing as of July 1, 2024, without standards stricter than NFPA 501A for that expansion.
    • A manufactured home may temporarily occupy the lot of a disaster-damaged residence while it is rebuilt, but that occupancy ends 12 months after placement or upon issuance of a certificate of occupancy, whichever occurs first.

    temporary disaster-rebuild occupancy: 12 months (ends earlier upon issuance of a certificate of occupancy)

    “Municipalities shall afford reasonable and realistic opportunities for the siting of manufactured housing [...] and a municipality shall not exclude manufactured housing completely”
  • 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.”
    2 more reviewed findings on this topic
    • State (with conditions) — Subsurface sewage disposal approvals affecting Belknap County.
      ““Department” means the department of environmental services.”
    • State — Subsurface sewage disposal systems serving property in Belknap County.
      “The department or its duly authorized agents are authorized to enter any and all premises at all reasonable hours for the purpose of inspecting and evaluating the maintenance and operating conditions of subsurface sewage or waste disposal facilities. [...] Nothing in this section shall be construed to limit or modify the authority conferred upon the department or local health officers under the provisions of RSA 147 or upon local officials certified by the department under the provisions of RSA 485-A:42.”
  • Septic permitRequired

    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.

    • Prior DES approval of plans and specifications is required before construction.
    • Locally approved plans must also be submitted where required by the local planning board or other local approving body.
    • A system may not be covered or placed in operation without final inspection and approval by an authorized DES agent.
    • The statute contains exemptions and permit-by-rule provisions elsewhere, including RSA 485-A:33.
    “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.”
    2 more reviewed findings on this topic
  • Septic inspectionRequired

    In-kind repair or replacement of a sewage effluent disposal area using the RSA 485-A:33, IV permit-by-rule pathway.

    • The existing system must receive only domestic sewage from a single-family residence and up to one associated accessory dwelling unit included on the approved plan.
    • There must be no increase in sewage loading.
    • The bed bottom must be at least 24 inches above the seasonal high water table.
    • The system must satisfy the 75-foot abutter-well and owner-well conditions, subject to the stated release-form or department-waiver exceptions.
    • The existing system must have prior department construction and operational approval and the replacement or repair must conform to that approval; department rules may require a minimum 1,000-gallon septic tank.
    • The system must not be within 75 feet of surface water, a water-supply well, or very poorly drained soil unless authorized by the prior approval.
    • No new waivers may be requested, and the system must not previously have been repaired or replaced under this permit-by-rule paragraph.
    • Construction may proceed only after the application and permit by rule are received; the system may not be covered or operated without final inspection and approval.
    • The department must complete inspection within 7 business days after written notice from the installer.

    minimum bed-bottom separation from seasonal high water table: >= 24 inches · minimum distance from abutter's well: >= 75 feet (unless the stated standard well release or existing department waiver applies) · minimum distance from owner's well: >= 75 feet (unless an existing department waiver applies) · inspection deadline: 7 business days (after written notice from the installer)

    “The repaired or replacement system shall not be covered or placed in operation without final inspection and approval”
    3 more reviewed findings on this topic
    • Required — Sewage or waste disposal systems subject to New Hampshire Department of Environmental Services approval.
      “the facilities shall not be covered or placed in operation without final inspection and approval”
    • Required — Individual subsurface sewage disposal systems in Belknap County.
      “If a partial inspection results in the department allowing the inspected portion to be backfilled, the department shall not issue an approval to operate until the entire system is installed and inspected.”
    • Required — Construction, operation, and maintenance of subsurface sewage disposal systems statewide in 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 sanitationLimited

    Composting or incinerator toilets in New Hampshire structures.

    • Department approval is not required where the structure has neither internal plumbing nor supplied water service.
    • If the structure has internal plumbing and water service from a drilled well, internal or external storage tank, or municipal water system, an ISDS with DES operational approval is required even if the toilet is not connected to it.
    • Toilet waste disposal must comply with applicable state rules and local law.
    “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 water-well construction in Belknap County.

    • A licensed water-well contractor is required for covered well construction.
    • A Well Completion Report must be submitted to the Water Well Board within 90 days after completion.
    • The opened source establishes licensing and reporting requirements, not a separate property-owner permit for every private well.

    well completion report deadline: 90 days (After completion of the well.)

    “A person constructing a bedrock well shall complete a “Well Completion Report” and submit the well completion report to the board in accordance with We 801. [...] “Well Completion Reports” shall be submitted no later than 90 days after completion of the well.”
    One more reviewed finding on this topic
    • Limited — Private and other water wells constructed in New Hampshire, including special requirements for open-loop geothermal wells.
      “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.”
    One more reviewed finding on this topic
    • Conditional — Private wells and connection to a public water system in Belknap County.
      “Pursuant to RSA 362:4, IV and V, when the provisions of RSA 485-A:29 and RSA 485-A:30-b are satisfied, no property owner shall be required to connect to a public water system.”
  • 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”
    5 more reviewed findings on this topic
    • Conditional — Existing agricultural uses and activities in Belknap County.
      “so long as any such expansion, alteration, or change complies with all federal and state laws, regulations, and rules”
    • 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.”
    2 more reviewed findings on this topic
    • 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.”
  • Driveway accessRequired

    Driveways, entrances, exits, and approaches within specified state-highway rights-of-way in Belknap County.

    • A written permit from the New Hampshire Department of Transportation is required before construction or substantial alteration within the right-of-way of a Class I or Class III highway or the state-maintained portion of a Class II highway.
    • Municipal planning boards or governing bodies may regulate qualifying subdivision streets under RSA 674:35.
    • For commercial, industrial, or subdivision access, engineering drawings are required.
    • Unless 400 feet of all-season safe sight distance is available in both directions, the commissioner generally may not permit more than one access to a parcel.
    • A major residential entrance serving 20 or more units may use an expedited process with a $120 per-unit non-refundable permit fee plus a possible third-party-review retainer.

    residential permit decision period: 60 days (existing or proposed residential use that is not a major driveway) · major residential entrance expedited fee: 120 USD per unit (non-refundable; additional third-party-review retainer may apply)

    “It shall be unlawful to construct, or alter in any way that substantially affects the size or grade of, any driveway, entrance, exit, or approach within the limits of the right-of-way of any class I or class III highway or the state-maintained portion of a class II highway that does not conform to the terms and specifications of a written permit issued by the commissioner of transportation.”
  • 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.”
  • 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 permits in New Hampshire, including projects in Belknap County, where the responsible local enforcement authority establishes or administers fees.
      “To the extent that it does not conflict with any other provision of law, and except as otherwise provided in this paragraph, the issuance of permits and the collection of fees pursuant to the state building code is expressly reserved for counties, towns, cities, and village districts where such activities have been authorized in accordance with RSA 155-A:3. Pursuant to the state fire marshal's authority to enforce the state building code under RSA 155-A:7, I, the fire marshal may establish for municipalities that do not have a building official or other enforcement mechanism authorized in RSA 155-A:4, with approval of the commissioner of safety and by rules adopted under RSA 541-A, fees to defray the cost of issuing building permits in accordance with the state building code.”
  • 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;”
    3 more reviewed findings on this topic
    • Partial — State building-permit process applicable in Belknap County.
      “the building official shall act to approve or deny a building permit within 30 days”
    • Partial — State building-permit process applicable in Belknap County municipalities.
      “the permit under this section shall conform to the locally adopted process”
    • Published (with conditions) — State building-permit process applicable in Belknap County.
      “The building official shall adopt a form or set of standards specifying the minimum contents of a completed application for any building permit. Upon the submission of a completed application, the building official shall act to approve or deny a building permit within 30 days; provided, however, that nonresidential applications or residential applications encompassing more than 10 dwelling units shall be approved or denied within 60 days.”
  • Campground & park staysTemporary only (with conditions)

    Recreational vehicles placed at New Hampshire recreational campgrounds or camping parks.

    • The campground or camping park must contain 2 or more campsites occupied or intended for temporary recreational dwelling occupancy.
    • The use is for temporary occupancy only and not permanent year-round residency.
    • A year-round site must meet Env-Wq 1008.04 requirements for a single-family house.
    • Local municipalities retain authority to enforce local zoning and health-and-safety regulations.
    • For occasional commercial or noncommercial RV use on a parcel for no more than 7 days in a calendar year, the landowner or responsible party must file a statement of compliance with the municipal governing body within 7 days before use, and RSA 216-I:4, II still applies.

    minimum campsite area: >= 1000 square feet (Applies to each recreational vehicle or recreational camping cabin campsite.) · occasional parcel use: <= 7 days per calendar year (Statement of compliance required within 7 days before commencement; RSA 216-I:4, II remains applicable.)

    “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 Belknap County

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

  • SetbacksSpecified

    Recreational campgrounds or camping parks in Alton.

    • The 75-foot buffer strip applies along all abutting off-site road, side, and rear boundaries of the park.
    • No camping may take place in the buffer strip.
    • The rule is part of the recreational campground or camping park standards and does not establish a countywide setback.

    campground boundary buffer: 75 feet (No camping in the buffer strip)

    “A planted buffer strip of 75 feet shall be provided along all abutting off site road, side, and rear boundaries of the park in which no camping may take place.”
  • Living in an RVLimited

    Occupancy of one recreational vehicle on a lot with an existing dwelling unit in Alton, and recreational vehicles as a principal use.

    • No more than one recreational vehicle may be occupied on a lot with an existing dwelling unit.
    • Occupancy must be for less than six months in a calendar year.
    • A Building Department permit is required if occupied for more than 10 consecutive days.
    • The occupied recreational vehicle must have domestic water and adequate wastewater disposal, including sewerage, septage, and gray water.
    • The recreational vehicle may not be rented for commercial gain.
    • A recreational vehicle may not be the principal use on a lot except on a campsite within an approved recreational campground or camping park.

    maximum recreational vehicles on lot with existing dwelling: 1 vehicle · maximum annual occupancy period: < 6 months; occupancy must be less than this period · permit threshold: > 10 consecutive days (Building Department permit required)

    “No more than one (1) Recreational Vehicle is permitted to be occupied on a lot with an existing dwelling unit provided it is for a period of less than six (6) months in a calendar year. If a Recreational Vehicle is occupied on a lot with an existing dwelling unit for more than 10 consecutive days, then the property owner shall obtain a permit from the Building Department. Such occupied Recreational Vehicle must have a domestic water supply and adequate provision for wastewater disposal, including sewerage, septage and gray water. Such Recreational Vehicle shall not be rented for commercial gain. B. No Recreational Vehicle is permitted as a principal use on a lot other than on a campsite within a recreational campground or camping park.”
  • Permit feesVariable (with conditions)

    Building and land-use permit fees in the Town of Alton, one of Belknap County's municipalities.

    • Residential new construction up to 4,000 square feet is charged per square foot at $0.28; over 4,000 square feet is charged at $0.35 per square foot.
    • Commercial new construction is charged at $0.35 per square foot.
    • A $20 minimum building permit fee and a $30 building permit administration fee apply to all building permits.
    • The schedule states it is effective September 12, 2023 for the land-use board fee notice.

    residential new construction up to 4000 square feet: per 0.28 USD per square foot · residential new construction over 4000 square feet: per 0.35 USD per square foot · minimum building permit fee: 20 USD · building permit administration fee: 30 USD (Applied to all Building Permits)

    “Residential up to 4000 sf - $0.28 sf Residential over 4000 sf - $0.35 sf Commercial - $0.35 sf [...] Minimum Building Permit Fee: $20.00 Building Permit Administration Fee: $30.00 Applied to all Building Permits”

Set by your town or city, not the county

In New Hampshire, zoning is adopted by each town or city, so Belknap 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
  • Camping on your land
  • Accessory dwellings

Still unanswered

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

  • Building in a floodplain — Floodplain development in Belknap 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 Belknap County, New Hampshire

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

Belknap County scores 71/100 on the Bolthole Index, a strong county profile. Its strengths: a stronger property-autonomy legal backdrop and mixed durability signals. Watch-outs: about 63,015 people within a 30-minute drive.

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

Belknap County generally requires a residential building permit, 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 Belknap County, New Hampshire?

Land in Belknap County runs about $5,541 per acre, based on the latest county data.

What is the water situation in Belknap County?

Belknap County gets about 47.4" of rain a year, with severe drought in roughly 4.3% of years.

How remote is Belknap County?

A representative private-land location has about 63,015 people within a 30-minute drive and 4,981,942 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 Belknap compares in New Hampshire

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