Bolthole Index

Coos County, New Hampshire

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

77Index Score / 100
#4 of 10 in New Hampshire

Coos County, New Hampshire requires a building permit before covered construction begins, and state building and fire codes apply countywide12. County zoning approval also applies to covered work in unincorporated places, while incorporated municipalities run their own land-use processes34. Septic construction approval comes from NHDES5.

At a glance

Building permit
Required before covered work; confirm the issuer for an unincorporated parcel1
Zoning
County zoning governs the unincorporated places6
Septic approval
NHDES Construction Approval required5
Owner-builder
No blanket permit exemption; energy certification required before occupancy78
RV living
Temporary camping is regulated; residential RV use is unconfirmed9
Tiny home
Local authority may permit a qualifying tiny home, subject to state and local rules10
Accessory dwelling
County permit required in specified unincorporated districts11
Minimum home size
We could not confirm one; ask the county office12

Who to call

Planning & zoning

Coos County Administration Office & Unincorporated Places

County contact for zoning, subdivision, and site-plan questions in Coos County's unincorporated places

(603) 237-1920

34 County Farm Road, PO Box 310, West Stewartstown, NH 03597

Septic permits

New Hampshire Department of Environmental Services, Subsurface Systems Bureau

Construction approval, design plan review, and records for septic systems statewide, including Coos 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 7, 2026.

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

Yes. Before covered construction, alteration, renovation, repair, removal, or demolition begins in Coos County, the responsible person must obtain a building permit, and the work must comply with New Hampshire's state building and fire codes113. County zoning approval is also required before covered construction or occupancy in an unincorporated place3. Every building erected on leased land in an unincorporated town or unorganized place has a separate county building-permit requirement14. We could not confirm who issues or inspects a building permit for an unincorporated one- or two-family home; ask the county office12.

Who issues building permits in Coos County, New Hampshire?

For an unincorporated parcel, start with Coos County Administration Office & Unincorporated Places at 34 County Farm Road, PO Box 310, West Stewartstown, NH 03597, phone (603) 237-192012. The County Commissioners or designee administer county zoning approvals15. Zoning applications cost $25 for new construction, $10 for renovations, or $100 after the fact; these are not confirmed building-permit fees16. Ask who issues the building permit, performs inspections, and supplies occupancy paperwork. Owner-builders have no blanket permit exemption and must submit as-built energy certification before occupancy87. Incorporated municipalities handle local building and zoning administration, while NHDES handles septic approval45.

Does Coos County have zoning?

Coos County directly zones its unincorporated places; incorporated municipalities use separate local processes64. An unincorporated building lot generally needs at least one acre, buildings may cover no more than 30% of the lot, and ordinary building height is capped at 35 feet171819. Structures generally need 75 feet from a road right-of-way and 25 feet from side and rear lines20. Accessory dwellings require a county permit in the Management, General Development, and Resort Development districts11. We could not confirm a minimum dwelling floor area; ask the county office12. Most nonexempt development in the flood-prone overlay requires conditional-use review21.

How do septic permits work in Coos County?

A new Coos County septic system needs NHDES Construction Approval based on a licensed New Hampshire designer's plan5. Local requirements may also apply, and an approved system cannot be covered or used before final inspection and approval2223. Only 3.4% of county soils lack severe limits for a conventional drain field, so settle feasibility early24. Covered buildings must connect to a public sewer within 100 feet, subject to local distance changes or a qualifying waiver25. A privy needs local health approval, which may include NHDES review26. Composting or incinerating toilets avoid department approval only without internal plumbing or supplied water27.

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

The unincorporated-place ordinance treats campground occupancy as temporary and limits a campsite to 30 overnight visitors, but it does not answer whether an RV may be a long-term home on an ordinary parcel9. Ask the county office before buying for residential RV use12. New Hampshire lets a local authority permit a qualifying tiny house where single-family homes are allowed or as an accessory dwelling, subject to land-use, building-code, drinking-water, and wastewater rules10. A statutory tiny house has permanent living, sleeping, eating, cooking, and sanitation facilities and no more than 600 square feet excluding lofts10. That framework does not approve a particular parcel10.

What are the steps to build a home in Coos County?

  1. Identify whether county or municipal land-use administration applies28.
  1. Confirm district, overlays, setbacks, and floodplain status1221.
  1. Establish septic feasibility and obtain NHDES Construction Approval5.
  1. Obtain required zoning, subdivision, conditional-use, or site-plan approval329.
  1. Identify the issuer and obtain the building permit before covered work112.
  1. Obtain an NHDOT driveway permit for access to a state-controlled highway30.
  1. Complete inspections and submit the energy certification before occupancy317.

What should you check before buying land in Coos County?

Confirm the parcel's legal place because county zoning governs unincorporated places while municipalities use separate processes4. Check the district, overlays, setbacks, coverage, and review requirements3229. Order septic feasibility early because only 3.4% of county soils avoid severe limits for a conventional drain field24. Check for public sewer within 100 feet and state-highway driveway approval2530. Flood-overlay development may require conditional-use review and federal floodplain standards21. Coos County is 94.2% wooded and 27.7% federal land, so verify boundaries, legal access, clearing constraints, and nearby public ownership3334.

Watch-outs

  • Building permits are required for covered work, but the current issuer and inspection path for an unincorporated one- or two-family home remain unconfirmed; ask the county office112.
  • County zoning applies only to unincorporated places; incorporated municipalities use separate processes, while NHDES handles septic approval45.
  • Temporary campground rules do not confirm long-term residential RV occupancy on an ordinary parcel9.
  • A privy needs local health approval, and plumbing or supplied water can trigger wastewater requirements2627.
  • A state-highway entrance needs a written NHDOT driveway permit before construction or substantial alteration30.

Sources

  1. Section 155-A:4 Permit Required, quoted and re-checked
  2. RSA 155-A:2 State Building Code, quoted and re-checked
  3. Zoning Ordinance for the Unincorporated Places of Coös County, amended December 13, 2024, quoted and re-checked
  4. Zoning Ordinance for the Unincorporated Places of Coös County, New Hampshire, quoted and re-checked
  5. NH DES - Septic Systems (2026 county census)
  6. Zoning Ordinance, Coos County Unincorporated Places, Amended 12/13/2024, quoted and re-checked
  7. Puc 1805.01 As-Built Construction Certification Required, quoted and re-checked
  8. RSA 155-A:4 — Permit Required (New Hampshire statewide rule), quoted and re-checked
  9. Zoning Ordinance for Coös County Unincorporated Places, amended December 13, 2024, quoted and re-checked
  10. RSA 674:82 Definitions—Innovative Housing Structures, quoted and re-checked
  11. Zoning Ordinance, Coos County Unincorporated Places, Amended 3/18/2024, quoted and re-checked
  12. Coos County Administration Office & Unincorporated Places (cooscountynh.gov)
  13. RSA 155-A:2 State Building Code, quoted and re-checked
  14. RSA 674:41 Erection of Buildings on Streets; Appeals, quoted and re-checked
  15. Zoning Ordinance for the Unincorporated Places of Coös County, New Hampshire, quoted and re-checked
  16. Coös County Planning Board Fee Schedule, quoted and re-checked
  17. Zoning Ordinance, Coos County Unincorporated Places, Amended 12/13/2024, quoted and re-checked
  18. Zoning Ordinance, Coos County Unincorporated Places, Amended 12/13/2024, quoted and re-checked
  19. Zoning Ordinance, Coos County Unincorporated Places, Amended 12/13/2024, quoted and re-checked
  20. Zoning Ordinance, Coos County Unincorporated Places, Amended 12/13/2024, quoted and re-checked
  21. Zoning Ordinance, Coos County Unincorporated Places, Amended 12/13/2024, quoted and re-checked
  22. RSA 485-A:32 Prior Approval; Permits, quoted and re-checked
  23. RSA 485-A:29 Submission and Approval of Plans and Specifications, quoted and re-checked
  24. 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
  25. RSA 147:8 Toilets; Drains, quoted and re-checked
  26. gc.nh.gov, quoted and re-checked
  27. Env-Wq 1000 Subdivisions and Individual Sewage Disposal Systems (New Hampshire statewide rule), quoted and re-checked
  28. Zoning Ordinance for the Unincorporated Places of Coös County, New Hampshire, quoted and re-checked
  29. Site Plan Review Regulations, Unincorporated Places, Coös County, New Hampshire, quoted and re-checked
  30. Section 236:13 Driveways and Other Accesses to the Public Way, quoted and re-checked
  31. Saf-C 8100 State Building Permit System, quoted and re-checked
  32. Zoning Ordinance for the Unincorporated Places of Coös County, New Hampshire, quoted and re-checked
  33. Wooded share of land: Bolthole Index county data
  34. Federal land share: Bolthole Index county data

Written October 7, 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, Coos County has countywide zoning.

RuleCoos CountyGrafton CountyCarroll CountyBelknap CountyStrafford CountyMerrimack CountySullivan County
Building permitRequiredLimitedRequiredRequiredLimitedRequiredLimited
County zoningYesNoNoNoYesYesNo
Septic permitsNH Dept. of Env. ServicesNH Dept. of Env. ServicesNHDESNHDESNH Dept. of Env. ServicesNHDESNHDES

County locator

Coos County in New Hampshire

77
County map
Coos County highlighted among the New Hampshire counties · colored by Index score

How Coos County scores

Seclusion87100% ev.
Self-Sufficiency5796% ev.
Admin Boringness45100% ev.
Durability61100% ev.
Property Autonomy78100% ev.
Carry Cost74100% ev.

Evidence strength: 99%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$259kTypical home
2.1%Property tax
$4,071Land / acre
47.6"Annual rain
0.7% of yrsSevere drought
0 / yr (+0)Mid-century 100°F days
8 daysMid-century dry spell
1.64" (+8.7%)Mid-century 1-day rain
1.48×Wildfire change factor
100%Forward climate coverage
$1,109Home insurance / yr
0.1% / yrInsurance growth
0.78%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
4,955People within 30 min
325,041People within 2 hr
8,855Radius comparison (15 mi)
17.5People / sq mi
27.7%Federal land
61.3%Land at 15% slope or less
3.4%Soils rated "not limited" for septic (strict USDA rating)
20,919 acWorkable land screen
94.2%Wooded land
45.3 tonsBiomass / forest ac
40.2°FAvg temp

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Cities and towns in Coos 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.

Berlin · Town of Carroll · Town of Clarksville · Town of Colebrook · Town of Columbia · Town of Dalton · Town of Dummer · Town of Errol · Town of Gorham · Town of Jefferson · Town of Lancaster · Town of Milan · Town of Northumberland · Town of Pittsburg · Town of Randolph · Town of Shelburne · Town of Stark · Town of Stewartstown · Town of Stratford · Town of Whitefield

Answers from the rulebook for Coos County

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

Coos County rules

  • Building permitRequired

    Every building erected on leased land located within an unincorporated town or unorganized place in Coos County.

    • The county planning board must require the permit.
    • The permit is required regardless of the building's proximity to a street or highway.
    • The county must authorize the planning board by resolution to issue permits under this provision.
    “shall require every building which is erected on leased land located within an unincorporated town or unorganized place to have a building permit.”
    One more reviewed finding on this topic
  • County-wide zoningPresent (with conditions)

    Zoning in Coos County's 23 unincorporated places, including Atkinson & Gilmanton Academy Grant, Bean's Grant, Bean's Purchase, Cambridge, Chandler's Purchase, Crawford's Purchase, Cutt's Grant, Dix Grant, Dixville, Erving's Grant, Green's Grant, Hadley's Purchase, Kilkenny, Low & Burbank's Grant, Martin's Location, Millsfield, Odell, Pinkham's Grant, Sargent's Purchase, Second College Grant, Success, Thompson & Meserve's Purchase, and Wentworth Location.

    • The ordinance applies to unincorporated places and does not establish county administration of incorporated towns or cities.
    • No building, structure, or land may be initially occupied, erected, moved, or altered in bulk until required permits are issued under the ordinance.
    • The county divides unincorporated places into Protected, Management, and Development districts; regulations may differ by district.
    • The ordinance was adopted 4/20/1991 and amended 08/10/2001, 02/13/2009, 05/17/2010, 11/5/2015, 10/20/2017, 3/18/2024, and 12/13/2024.
    • The ordinance defines campgrounds as transient-occupancy areas for tents, camp trailers, travel trailers, motor homes, or similar temporary shelters; Management District campgrounds require a permit, while primitive campsites are allowed without a permit. Seasonal camps require an approved wastewater-disposal method and are not for year-round or primary residence.
    • Accessory dwelling units are expressly included among single-dwelling uses that may require a county permit in Management and Development districts.
    • Minimum lot size is one acre in all districts, increased as needed to meet NHDES wastewater requirements; maximum density is one dwelling unit, with or without an accessory dwelling, or other principal use per acre.

    minimum lot size: >= 1 acre (For on-site wastewater disposal, increased as needed to meet NHDES requirements.) · maximum development density: per 1 dwelling unit or other principal use per acre (Dwelling unit may include an accessory dwelling.) · minimum shoreline frontage: 200 feet (Per dwelling unit for residential uses, including seasonal camps; 200 feet for commercial, industrial, and other non-residential uses involving one or more buildings.) · minimum road frontage: 200 feet (Per dwelling unit for residential uses, including seasonal camps; exceptions include certain road-end or circular-turnaround lots.)

    “For the purpose of promoting health, safety and the general welfare of the area, the County adopts this Zoning Ordinance.”
    One more reviewed finding on this topic
    • Present (with conditions) — Zoning regulation in Coos County's unincorporated places, including the listed grants, purchases, locations, and unorganized places.
      “This ordinance shall be known and may be cited as the “Zoning Ordinance for the Unincorporated Places of Coös County” referred to herein as “the Ordinance” or “this Ordinance.””
  • Local zoningVaries (with conditions)

    The countywide aggregate of local zoning in Coos County, including county-administered unincorporated places and incorporated municipalities such as Berlin.

    • The county zoning ordinance applies to the unincorporated places listed in the ordinance, not automatically to incorporated municipalities.
    • Incorporated municipalities administer their own local zoning ordinances; Berlin's official planning page states that its Planning Board maintains the City's Zoning Ordinance.
    • The countywide value aggregates different local rule-makers and geographic scopes; it does not mean Coos County administers every municipal zoning ordinance.
    • The Coos County ordinance was adopted April 20, 1991 and amended August 10, 2001; February 13, 2009; May 17, 2010; November 5, 2015; October 20, 2017; March 18, 2024; and December 13, 2024.
    “The Planning Board also works to maintain the Zoning Ordinance for the community and proposes changes to the City Council as needed or requested.”
    One more reviewed finding on this topic
    • Present (with conditions) — County-administered zoning in the unincorporated places of Coös County, New Hampshire; organized cities and towns are excluded from this ordinance.
      “4.02 Division into Districts: The Unincorporated Places of Coös County, New Hampshire are hereby divided into the following zoning districts:”
  • Zoning districtsPublished (with conditions)

    Zoning districts and overlays in the unincorporated places of Coos County, including Atkinson & Gilmanton Academy Grant, Bean’s Grant, Bean’s Purchase, Cambridge, Chandler’s Purchase, Crawford’s Purchase, Cutt’s Grant, Dix Grant, Dixville, Erving’s Grant, Green’s Grant, Hadley’s Purchase, Kilkenny, Low & Burbank’s Grant, Martin’s Location, Millsfield, Odell, Pinkham’s Grant, Sargent’s Purchase, Second College Grant, Success, Thompson & Meserve’s Purchase, and Wentworth Location.

    • District regulations may differ between districts.
    • The ordinance identifies Protected Districts, Management Districts, and Development Districts, with protected overlays including Aquifers, Flood Prone Areas, Shorelines, Steep Slopes & High Elevations, and Wetlands.
    • The ordinance applies to the unincorporated places and does not establish zoning for incorporated municipalities in the county.
    “The Unincorporated Places of Coös County, New Hampshire are hereby divided into the following zoning districts:”
  • Minimum lot sizeSpecified

    All lots on which building development is proposed in Coos County unincorporated places.

    • The minimum applies in all districts.
    • For uses utilizing on-site wastewater disposal, the lot must be increased as needed to meet New Hampshire Department of Environmental Services requirements.
    • The requirement applies to both deeded and leased lots.

    minimum lot size: >= 1 acre (Increase as needed for NHDES on-site wastewater-disposal requirements.)

    “The minimum lot size in all districts shall be one acre. For uses utilizing on-site wastewater disposal, the minimum lot size shall be increased as needed to meet NHDES requirements. This requirement applies to both deeded and leased lots.”
  • SetbacksSpecified

    Structures and subsurface wastewater systems on lots in Coos County unincorporated places.

    • The building setbacks apply to all structures other than fences.
    • The street setback applies to privately or publicly owned roads used for public access.
    • A leased-lot zoning-permit application must include a survey demonstrating setback compliance.
    • Conditional use permits may reduce certain road, side, or rear setbacks subject to the ordinance's findings and conditions.
    • No subsurface wastewater disposal system may be constructed within 50 feet of Hydric B soils or 75 feet of Hydric A soils.

    street setback: >= 75 feet from edge of right-of-way (May be reduced only through applicable conditional-use approval.) · side and rear lot-line setback: >= 25 feet (Certain conditional-use reductions may not result in a setback smaller than 5 feet.) · setback from Hydric B soils for subsurface wastewater disposal: >= 50 feet · setback from Hydric A soils for subsurface wastewater disposal: >= 75 feet

    “seventy-five (75) feet [...] twenty-five (25) feet”
  • Lot coverageSpecified

    Lots with building development in Coos County unincorporated places, including planned unit developments and cluster developments.

    • For a planned unit development or cluster development, average lot coverage must not exceed the same 30 percent limit.

    maximum lot coverage: <= 30 percent (PUD or cluster development average lot coverage also may not exceed 30 percent.)

    “thirty percent (30%)”
  • Building heightSpecified

    Buildings in Coos County unincorporated places.

    • Chimneys, towers, ventilators, and spires containing no floor area may exceed the maximum with approval of the County Commissioners or designee.
    • Other exceptions require written approval from the responsible fire department.

    maximum building height: <= 35 feet (Non-floor-area features may exceed with County Commissioners or designee approval; other exceptions require written fire-department approval.)

    “thirty-five (35) feet”
  • Living in an RVLimited

    Transient occupancy of travel trailers and motor homes in campgrounds within Coos County unincorporated places.

    • The ordinance defines campgrounds as areas designed for transient occupancy by camping in tents, camp trailers, travel trailers, motor homes, or similar temporary shelters.
    • Campgrounds are permit-requiring uses in the Management, General Development, and Resort Development districts; district overlays and underlying-district rules also apply.
    • This claim does not establish permission for long-term residential RV occupancy outside a campground.
    “Campground: Any area, other than a campsite, designed for transient occupancy by camping in tents, camp trailers, travel trailers, motor homes or similar facility for temporary shelter.”
    One more reviewed finding on this topic
  • Camping on your landLimited

    Temporary camping and campground uses in Coös County unincorporated places under the County zoning ordinance.

    • The ordinance defines a campground as transient occupancy for temporary shelter, not year-round or primary-residence occupancy.
    • A campsite is primarily for tents or lean-tos and may not accommodate more than 30 overnight visitors.
    • Permanent campsite structures are limited to privies, fireplaces, picnic tables with or without roofs, lean-tos, and water pumps.
    • In the Management District, campgrounds require a permit from the County Commissioners or designee.
    • Underlying district requirements and applicable state water, wastewater, health, and safety rules still apply.

    maximum overnight visitors per campsite: <= 30 visitors (The ordinance states that no campsite shall be designated to accommodate more than thirty overnight visitors.)

    “2. Campgrounds 3. Single dwelling units, with or without accessory dwelling units”
  • Accessory dwellingsLimited

    Accessory dwelling units in the DD-G General Development Subdistrict of Coos County unincorporated places.

    • A county permit from the County Commissioners or designee is required.
    • The accessory dwelling must accompany a single-family detached dwelling unit.
    • Protected overlay districts and other applicable ordinance requirements may independently apply.
    “Uses requiring a permit: The following uses may be allowed within a DD-G upon issuance of a permit from the County Commissioners or designee: [...] Residential: Single family detached dwelling units, with or without accessory dwelling units; duplexes; multi-family dwellings; condominiums; and residential subdivisions”
    3 more reviewed findings on this topic
    • Allowed (with conditions) — Accessory dwelling units in single-family residential development within the Coos County unincorporated Management, General Development, and Resort Development districts.
      “with or without accessory dwelling units”
    • Limited — Accessory dwelling units in the DD-Resort Resort Development Subdistrict of Coos County unincorporated places.
      “Uses requiring a permit: The following uses may be allowed within a DD-Resort upon issuance of a permit from the County Commissioners or designee: [...] Residential: Single family detached dwelling units, with or without accessory dwelling units; duplexes; multi-family dwellings; condominiums; and residential subdivisions”
    • Limited — Accessory dwelling units associated with single dwelling units in the Management District of Coos County unincorporated places.
      “Uses requiring a permit: The following uses may be allowed within an MD upon the issuance of a permit from the County Commissioners or designee: [...] Single dwelling units, with or without accessory dwelling units”
  • Agricultural exemptionAvailable

    Agricultural management activities in Coos County unincorporated zoning districts where the ordinance lists them as allowed without a permit, including the Residential Development Subdistrict.

    • This is an exemption from the county zoning permit requirement, not a blanket exemption from all state, federal, wastewater, building, or other applicable requirements.
    • The ordinance also requires applicable best management practices for all activities in the unincorporated places.
    “Agricultural management activities”
  • Subdividing landRegulated (with conditions)

    Division of a lot, tract, or parcel in Coos County unincorporated places into two or more lots, sites, or other divisions for sale, rent, lease, condominium conveyance, or building development.

    • The ordinance defines subdivision to include resubdivision and division of commonly held land among several owners.
    • Residential dwelling units and subdivisions in the Residential Development Subdistrict require a permit from the County Commissioners or designee.
    • Cluster development and planned unit development require conditional-use approval and may have additional subdivision requirements.
    “two (2) or more lots”
  • Building in a floodplainLimited

    Structures, uses, and services in the Flood Prone Areas Protected Overlay District (PD2), covering areas within the 100-year frequency floodplain in Coos County unincorporated places.

    • PD2 applies to areas within the 100-year frequency floodplain identified by the County Commissioners or designee or Planning Board after considering state and federal flood-prone designations, historical data, and NRCS National Cooperative Soil Survey data.
    • Primitive recreational uses, road traffic, wildlife and fishery management, surveying/resource analysis, exempt signs, emergency operations, trails meeting the sedimentation condition, snowmobiling, agricultural management, forest management, and land management roads are allowed without a PD2 permit only if allowed without a permit in the underlying district.
    • Nonexempt signs may be allowed only after a permit from the County Commissioners or designee and only if allowed in the underlying district.
    • Other structures, uses, or services may be allowed only with a Conditional Use Permit when the Planning Board determines consistency with the PD2 purpose and Master Plan, no detriment to protected resources or uses, compliance with federal floodplain building code standards, and authorization in the underlying district with or without a Conditional Use Permit.
    • All uses not expressly allowed with or without a permit or Conditional Use Permit are prohibited in PD2.
    • The ordinance states that where requirements conflict with other lawfully adopted rules, regulations, or ordinances, the most restrictive or higher standards apply.
    • The ordinance identifies its effective date as immediately upon passage on April 20, 1991; the source document is amended 12/13/2024, but does not state a separate effective date for that amendment.

    floodplain extent: 100-year frequency floodplain (Identified by the County Commissioners or designee or Planning Board using the listed data sources.)

    “(c) Uses allowed with a Conditional Use Permit: Other structures, uses, or services which the Planning Board determines are consistent with the purposes of this Protected Overlay District and of the Master Plan and are not detrimental to the resources or uses which they protect which are built to federal floodplain building code standards, provided they are permitted in the underlying District with or without a Conditional Use Permit.”
  • Permit feesPublished (with conditions)

    Coös County Planning Board zoning and subdivision applications in the unincorporated places of Coos County.

    • The fee schedule identifies the listed fees as current on the published schedule.
    • Certified-mail notifications are charged at current postal rates.
    • Published notices are charged as billed by the newspaper.
    • The applicant may also be responsible for reasonable special investigative, environmental, legal, administrative, and other review costs if the Board determines they are necessary.

    zoning permit, new construction: 25 USD · zoning permit, renovations: 10 USD · zoning permit, after-the-fact: 100 USD · minor subdivision: 35 USD · major subdivision: 50 USD · each additional subdivision lot: 10 USD

    “1. Zoning Permit a. New Construction $25.00 b. Renovations $10.00 c. After the fact fee $100.00 2. Subdivision a. Minor Subdivision $35.00 b. Major Subdivision $50.00 c. Plus Each Additional Lot $10.00”
  • Permit processPublished (with conditions)

    New nonresidential and multifamily development, redevelopment, expansion, or change of use in the unincorporated places of Coos County.

    • Site plan review must be completed before construction, land clearing, building development, or issuance of a building permit or other development authorization.
    • A complete application must identify applicants and abutters, include required fees and costs, and include three paper plan copies.
    • The completed application must be filed at least 15 days before a scheduled public meeting.
    • A public hearing is required before approval.
    • The Planning Board acts within 65 days after accepting a complete application, subject to statutory extension or waiver.

    minimum filing lead time before scheduled public meeting: >= 15 days · Planning Board action deadline after complete application acceptance: 65 days (subject to extension or waiver under RSA 676:4)

    “Within sixty-five (65) days of acceptance of the application as complete, and after a duly noticed public hearing as provided in Article III Section F, the Board shall approve, disapprove, or approve the application with conditions, subject to extension or waiver as provided in accordance with RSA 676:4.”

New Hampshire rules that apply here

  • 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.”
    3 more reviewed findings on this topic
    • Conditional — An owner-builder acting as the builder or general contractor for a building subject to New Hampshire energy-code compliance requirements.
      “In those municipalities which issue certificates of occupancy, the owner‑builder or general contractor shall submit to the appropriate authority having jurisdiction”
    • Available (with conditions) — A homeowner performing electrical installations in or about a single-family residence in New Hampshire.
      “II. Nothing in this chapter shall prevent a homeowner from making electrical installations in or about a single family residence owned and occupied by him or her or to be occupied by him or her as his or her bona fide personal abode.”
    • 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 (with conditions) — Buildings and structures in Coos County, including unincorporated places, subject to 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.”
    • Adopted (with conditions) — Buildings, building components, and structures constructed in New Hampshire, including those located in Coos 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) — Buildings, building components, and structures constructed in Coos County, including incorporated municipalities and county-administered unincorporated places, subject to the state enforcement and local-enforcement provisions of RSA chapter 155-A.
      “All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code.”
  • InspectionsRequired

    Work performed under the scope of building permits issued through the New Hampshire state building permit system.

    • Inspections must be requested by the permit holder.
    • Inspections occur at appropriate times during construction and before work is concealed.
    • If work is noncompliant, correction and re-inspection are required; the permit holder is subject to a re-inspection fee.
    “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.”
    One more reviewed finding on this topic
    • Required — Work performed under the scope of a building permit 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”
  • 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 — Projects administered under the New Hampshire state building permit system after completion of work and required inspections.
      “The state fire marshal shall issue permits, conduct inspections, and issue certificates of occupancy for buildings owned by the state”
  • Tiny homesAllowed (with conditions)

    Tiny houses and other innovative housing structures, including structures located in Coos County unincorporated places.

    • A municipality may permit the structure on an individual house lot where single-family dwellings are allowed or as an accessory dwelling unit under RSA 674:72.
    • All applicable land-use requirements apply.
    • The structure is treated as a single-family dwelling or accessory dwelling unit for zoning purposes.
    • The structure must comply with applicable state drinking-water and wastewater-treatment and disposal laws and regulations.
    • The structure must comply with the New Hampshire state building code and state fire code.
    • The statutory tiny-house definition requires permanent provisions for living, sleeping, eating, cooking, and sanitation.
    • The statute establishes a maximum floor area of 600 square feet excluding lofts, but does not state a minimum total dwelling floor area.
    • The statute requires construction on a stable ground surface or foundation; it does not establish a minimum habitable-space floor area in the cited provisions.

    maximum tiny-house floor area excluding lofts: <= 600 square feet · minimum total dwelling floor area: not stated in cited provisions · permanent living, sleeping, eating, cooking, and sanitation provisions: true

    “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. 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.”
    One more reviewed finding on this topic
    • Limited — Innovative housing structures, including tiny houses, tiny houses on wheels, and yurts, used as dwellings in New Hampshire, including county-administered unincorporated places where the local authority permits them.
      “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.”
  • 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 (with conditions) — Septic and subsurface sewage disposal systems in Coos County, including incorporated municipalities and unincorporated areas.
      “The health officer may make [...] such regulations as necessary [...] Nothing in this section shall be construed to limit the authority [...] 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, 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.”
  • Septic inspectionRequired

    Transfer of developed waterfront property using a septic system when any portion of the system is within 250 feet of the RSA 483-B:4, XVII reference line.

    • The buyer pays for the evaluation and must engage a New Hampshire licensed septic system evaluator before transfer.
    • The buyer may accept a seller-prepared evaluation only if completed within 180 days before transfer, and acceptance must be acknowledged in writing.
    • If the system shows signs of failure or is determined to be in failure, the buyer must sign an authorization, the evaluator must notify the department and local health officer, the buyer must replace the system within 180 days, and a post-replacement report with state operational approval must be filed.
    • The buyer may instead replace or repair the system within 180 days, with notice before transfer and a report within 180 days after closing.
    • If circumstances beyond the buyer's control preclude evaluation or replacement, or make the seller's evaluation older than 180 days, the department must grant an extension of up to 180 days upon request.

    waterfront septic-system distance from reference line: <= 250 feet · seller evaluation age limit: <= 180 days · replacement deadline after transfer: 180 days · extension for circumstances beyond buyer's control: <= 180 days

    “the buyer of the property shall, at the buyer's expense, engage a New Hampshire licensed septic system evaluator to conduct a septic system evaluation.”
    2 more reviewed findings on this topic
    • Required — New or repaired sewage or waste disposal systems in New Hampshire, including Coos County.
      “the facilities shall not be covered or placed in operation without final inspection and approval by an authorized agent of the department.”
    • 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 sanitationAllowed (with conditions)

    Privies or outhouses not conveying sewage by water in New Hampshire, including Coos County.

    • A privy may be allowed only after approval by local municipal health officials as to location and construction.
    • At the option of local municipal health officials, NHDES approval may also be required before construction.
    • Applicable state and local regulations remain applicable.
    “Notwithstanding the provisions of this section, privies (outhouses not conveying sewage by water) may be allowed if such facilities are first approved by the local municipal health officials as to location and construction of the facilities. At the option of the local municipal health officials, further approval may be required by the department of environmental services, prior to the construction of such facilities.”
    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

    Water-supply wells outside the RSA 482-B:12 private-use category, including wells serving the public or a residence other than the constructor's own permanent residence.

    • The reviewed rules expressly require a Water Well Board water-well-contractor license for construction of wells for water supply.
    • A Well Completion Report must be submitted to the Water Well Board no later than 90 days after completion; failure to submit timely is a violation subject to administrative fines.
    • RSA 482-B:12 allows a person to construct a well on the person's own or leased property for noncommercial farming or private use limited to the person's own permanent residence, but still requires records under RSA 482-B:10 and compliance with applicable rules.
    • The reviewed official provisions establish licensing and recordkeeping requirements; they do not identify a separate application-based well-construction permit distinct from the contractor license.

    well completion report deadline: <= 90 days (Late reports require a signed explanation and may be accepted under stated conditions.)

    “Nothing in this chapter shall prevent a person from constructing a well on the person's own or leased property if the well is intended for use only for noncommercial farming purposes or if the waters to be produced are not intended for use by the public or by persons in any residence other than the person's own permanent residence. Such person shall submit records as required under RSA 482-B:10 and shall comply with any applicable rules.”
    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 hookupSewer (with conditions)

    Occupancy of a dwelling house, office, store, shop, theater, public hall, sleeping apartment, or tourist cabin in New Hampshire, including Coos County, when a public sewer is available within 100 feet.

    • The covered building uses must have suitable drains or sewers conveying wastewater and sewage away from the premises into a public sewer if one exists within 100 feet.
    • If no public sewer exists within 100 feet, wastewater and sewage must be conveyed underground or otherwise in a manner that is not offensive.
    • Cities, towns, and village districts may increase the 100-foot distance by ordinance or regulation.
    • Cities, towns, and village districts may grant waivers for adequate alternative sewage systems complying with state and local regulations, designed by a licensed New Hampshire designer and approved for construction by NHDES after January 1, 1985.

    public sewer distance: <= 100 feet (Local cities, towns, and village districts may increase the distance.) · alternative-system approval date: >= 1985-01-01 (Applies to systems eligible for a local waiver.)

    “No person shall occupy, lease to any other person, or permit any other person to occupy, a building or any part of a building as a dwelling house, office, store, shop, theater, public hall, sleeping apartment or tourist cabin, unless such building shall have readily accessible adequate toilet and lavatory facilities, properly ventilated and constructed, and kept in proper sanitary condition; and 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 — Buildings occupied or used for dwelling, office, store, theater, public hall, sleeping apartment, or tourist cabin in New Hampshire.
      “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.”
  • Driveway accessRequired

    Construction or substantial alteration of a driveway, entrance, exit, or approach within the right-of-way of a Class I or Class III highway or the state-maintained portion of a Class II highway, including in Coos County.

    • A written construction permit application must be obtained from and filed with the New Hampshire Department of Transportation before construction or alteration begins.
    • The permit must describe the location, drainage structures, traffic control devices, channelization islands, grades, and other safety terms and specifications.
    • For proposed commercial or industrial enterprises or subdivisions, engineering drawings are required.
    • Unless 400 feet of all-season safe sight distance in both directions is available, no more than one access to a single parcel may be permitted, and additional access requires proof of the required sight distance.
    • A permit may not allow a driveway wider than 50 feet, except for a flare at the highway junction needed for vehicle turning radius.
    • No more than two accesses from one highway to one parcel are allowed unless highway frontage exceeds 500 feet.
    • For existing or proposed residential use that is not a major driveway, the department must issue or deny the permit within 60 days after receiving a completed application.
    • The expedited permitting program for major residential entrances serving 20 or more units is optional and has a $120 per-unit non-refundable permit fee, plus a retainer for third-party professional-engineer review; unused retainers must be refunded within 120 days after permit issuance.
    • Equivalent powers are conferred on planning boards or governing bodies only in cities and towns where they have been granted power to regulate the grading and improvement of subdivision streets under RSA 674:35.

    all-season safe sight distance: 400 feet (For proposed commercial or industrial enterprises or subdivisions; unless this distance is available, no more than one access may be permitted.) · maximum driveway width: <= 50 feet (A flare beyond 50 feet is allowed at the highway junction to accommodate vehicle turning radius.) · maximum accesses from one highway to one parcel: <= 2 (Unless frontage along that highway exceeds 500 feet.) · residential permit decision period: <= 60 days (For residential use, including multifamily development, that is not classified as a major driveway.) · expedited residential major-entrance fee: 120 USD per unit (Optional program for residential use of 20 units or greater; fee is non-refundable and may be adjusted with governor and council approval.)

    “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.”
  • 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”

Set by your town or city, not the county

In New Hampshire, zoning is adopted by each town or city, so Coos 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
  • Manufactured homes

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 Coos County, New Hampshire

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

Coos County scores 77/100 on the Bolthole Index, a strong county profile. Its strengths: deep seclusion — about 4,955 people within a 30-minute drive and a stronger property-autonomy legal backdrop.

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

Coos County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by NH Department of Environmental Services, 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 Coos County, New Hampshire?

Land in Coos County runs about $4,071 per acre, based on the latest county data.

What is the water situation in Coos County?

Coos County gets about 47.6" of rain a year, with severe drought in roughly 0.7% of years.

How remote is Coos County?

A representative private-land location has about 4,955 people within a 30-minute drive and 325,041 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 Coos compares in New Hampshire

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