Bolthole Index

Grafton County, New Hampshire

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

83Index Score / 100
#1 of 10 in New Hampshire

Grafton County, New Hampshire does not issue county building permits or administer county zoning; the town where the parcel lies determines the local permit and zoning rules12. One- and two-family homes are excluded from the state permit system when a municipality has no local building-code enforcement mechanism3. New Hampshire DES handles septic approvals statewide4.

At a glance

Building permit
Town-specific; many rural towns require none for a home1
Zoning
No county zoning; municipal rules vary by town2
Septic permit
New Hampshire DES approval is required before construction45
RV living
Long-term private-parcel occupancy is unconfirmed; ask the town6
Tiny home
No confirmed countywide occupancy or minimum-size rule; ask the town2
Owner-builder
No countywide exemption confirmed; ask the town permit office7
Off-grid toilet
DES approval is not required only when there is no internal plumbing or supplied water8
Private well
No universal ordinary-well construction permit confirmed; completion reporting applies9

Who to call

Septic permits

New Hampshire Department of Environmental Services, Subsurface Systems Bureau

Septic design review and construction and operation approvals statewide, including Grafton County

(603) 271-3503

29 Hazen Drive, Concord, NH 03302-0095

Online permits →

Building permits

New Hampshire Office of the State Fire Marshal, State Building Permit Program

State building permits for projects covered by the state permit system

603-223-4289

[email protected]

33 Hazen Drive, Concord, NH 03305

Online permits →

Contact details are copied from each office’s official page and were checked against it on September 28, 2026.

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

Grafton County does not decide whether an ordinary home needs a building permit; that decision is municipal, and many rural towns require none1. New Hampshire's state building permit system excludes one- and two-family dwellings in municipalities without a local enforcement mechanism3. A town that has adopted enforcement uses its locally adopted process, while covered state-system work requires separate building, electrical, plumbing, mechanical and fire-protection permits3. For a completed application, the building official generally must approve or deny it within 30 days; the deadline is 60 days for nonresidential work or residential projects encompassing more than 10 dwelling units10. Ask the town office for the parcel address whether a permit, inspection and certificate of occupancy apply before ordering plans or materials111.

Who handles Grafton County building permits, and how do you reach them?

Grafton County has no county building department for ordinary residential projects because permit authority is determined town by town1. Start with the clerk or building office of the municipality where the parcel lies and ask whether the town has adopted building-code enforcement, zoning review, inspections and a certificate-of-occupancy requirement111. The New Hampshire Office of the State Fire Marshal accepts state building-permit applications for projects that fall within the state system123. State-system permit holders must request inspections before covered work is concealed, and noncompliant work requires correction and reinspection13. The state office is not a substitute for the town on an ordinary one- or two-family home in a municipality without local enforcement3.

Does Grafton County have zoning?

Grafton County has no county-level zoning; New Hampshire zoning is a municipal function, so the controlling ordinance is the one adopted by the parcel's town2. We could not confirm a countywide directory showing which Grafton County municipalities currently have zoning. Setbacks, lot coverage, building height, minimum lot size, minimum dwelling size, RV occupancy and tiny-home treatment therefore need an address-specific answer from the town. A municipality may authorize its planning board to regulate subdivisions by ordinance or resolution14. New Hampshire also allows one accessory dwelling unit as a matter of right where single-family dwellings are permitted, subject to statutory conditions and local provisions15. An agricultural use is not automatically exempt from setbacks, driveway rules or other local standards, although a limited waiver may be available after notice and a hearing when literal application would unreasonably block the agricultural use16.

How do septic permits work in Grafton County?

New Hampshire DES reviews septic designs and issues construction and operation approvals for Grafton County properties417. A building that will discharge sewage and a new sewage-disposal system require prior DES approval of the plans, plus locally approved plans where the municipality requires them5. The permitted system cannot be covered or placed in operation before final inspection and approval18. Only about 5.9% of Grafton County soils lack severe limitations for a conventional drain field, so arrange a site evaluation before committing to a house location or price19. A dwelling, office, store, public hall, sleeping apartment or tourist cabin generally must connect when a public sewer is within 100 feet, although municipalities may increase that distance or grant qualifying waivers20.

Can you live in an RV or tiny home in Grafton County?

We could not confirm a countywide rule allowing long-term RV or tiny-home occupancy on private land in Grafton County. The parcel's town should answer the zoning, building, sanitation and occupancy questions because Grafton County has no county zoning and municipal rules vary2. New Hampshire's campground rule covers recreational campgrounds and camping parks, not a general right to live in an RV on private land6. Occasional RV use on a parcel for no more than 7 days in a calendar year requires a compliance statement filed with the municipal governing body within 7 days before use6. For off-grid sanitation, a composting or incinerating toilet avoids DES approval only where the structure has neither internal plumbing nor supplied water service; adding either can trigger the requirement for an approved individual sewage-disposal system8.

Building a home in Grafton County: the steps, in order

  1. Give the parcel address to the town office and ask about zoning, a building permit, inspections, driveway approval, floodplain review and a certificate of occupancy1211.
  1. Use the town's process if it enforces the building code; use the state permit program only when the project falls within that system312.
  1. Have a permitted designer prepare the septic plan, obtain DES Approval for Construction and secure any required municipal approval175.
  1. Keep the septic system uncovered until final inspection, then obtain Approval for Operation before use1817.
  1. If drilling a private well, have the contractor submit the completion record within 90 days; an ordinary-well construction permit was not established by the reviewed state source9.
  1. Complete every town or state inspection and occupancy step that applies to the project1311.

What should you check before buying land in Grafton County?

Start with septic feasibility because only about 5.9% of Grafton County soils lack severe limitations for a conventional drain field19. Check slope and clearing costs too: about 47.6% of the land has a slope of 15% or less, while roughly 93.5% is wooded2122. Confirm legal access, town driveway requirements, the mapped flood zone, available utilities and every town zoning condition before closing2. Grafton County's effective property-tax rate is about 1.9%, and the median annual property-tax bill is about $5,6242324. Private-well research should include yield, setbacks and the contractor's completion report because the reviewed state material did not establish a universal construction permit for an ordinary well9. For an off-grid structure, settle the water and wastewater design together because supplied water or internal plumbing changes the sanitation approval answer8.

Watch-outs

  • Grafton County permit and zoning answers change at town lines, so get written answers from the municipality for the parcel address12.
  • Do not cover or use a newly built septic system before final inspection and approval18.
  • An agricultural building or use is not categorically exempt from local setbacks, driveway rules and other dimensional standards16.

Sources

  1. NH Municipal Association: The State of Local Land Use Regulations in New Hampshire (2026 county census)
  2. NH Municipal Association: The State of Local Land Use Regulations in New Hampshire (2026 county census)
  3. Chapter 155-A New Hampshire Building Code (New Hampshire statewide rule), quoted and re-checked
  4. NH Department of Environmental Services - Septic Systems (2026 county census)
  5. RSA 485-A:32 Prior Approval; Permits (New Hampshire statewide rule), quoted and re-checked
  6. Chapter 216-I Recreational Campgrounds and Camping Parks (New Hampshire statewide rule), quoted and re-checked
  7. (2026 county census)
  8. Env-Wq 1000 Subdivisions and Individual Sewage Disposal Systems (New Hampshire statewide rule), quoted and re-checked
  9. RSA 482-B:10 Record of Wells; Monitoring Wells (New Hampshire statewide rule), quoted and re-checked
  10. RSA 155-A:4 Permit Required, quoted and re-checked
  11. Saf-C 8100 State Building Permit System (New Hampshire statewide rule), quoted and re-checked
  12. New Hampshire Office of the State Fire Marshal, State Building Permit Program (nh.gov)
  13. Saf-C 8100 State Building Permit System (New Hampshire statewide rule), quoted and re-checked
  14. RSA 674:35 — Power to Regulate Subdivisions (New Hampshire statewide rule), quoted and re-checked
  15. RSA 674:72 Accessory Dwelling Units, quoted and re-checked
  16. RSA 674:32-c — Other General Provisions (New Hampshire statewide rule), quoted and re-checked
  17. New Hampshire Department of Environmental Services, Subsurface Systems Bureau (des.nh.gov)
  18. Env-Wq 1004.06 ISDS Inspection Required, quoted and re-checked
  19. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  20. RSA 147:8 Toilets; Drains (New Hampshire statewide rule), quoted and re-checked
  21. Share of land at 15% slope or less: Bolthole Index county data
  22. Wooded share of land: Bolthole Index county data
  23. Effective property tax rate: Bolthole Index county data
  24. Median property tax bill: Bolthole Index county data

Written September 28, 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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County locator

Grafton County in New Hampshire

83
County map
Grafton County highlighted among the New Hampshire counties · colored by Index score

How Grafton County scores

Seclusion74100% ev.
Self-Sufficiency5895% ev.
Admin Boringness7090% ev.
Durability67100% ev.
Property Autonomy78100% ev.
Carry Cost67100% ev.

Evidence strength: 97%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$440kTypical home
1.9%Property tax
$4,312Land / acre
47.7"Annual rain
1.4% of yrsSevere drought
0.2 / yr (+0.2)Mid-century 100°F days
9.6 daysMid-century dry spell
1.88" (+9%)Mid-century 1-day rain
1.47×Wildfire change factor
100%Forward climate coverage
$1,244Home insurance / yr
0.3% / yrInsurance growth
0.72%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
13,244People within 30 min
989,823People within 2 hr
35,684Radius comparison (15 mi)
54.5People / sq mi
33.4%Federal land
47.6%Land at 15% slope or less
5.9%Septic soil without severe limits
31,145 acWorkable land screen
93.5%Wooded land
60.6 tonsBiomass / forest ac
42.4°FAvg temp

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Answers from the rulebook for Grafton County

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

Grafton County rules

New Hampshire rules that apply here

  • Building permitRequired

    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.

    • The state building permit system excludes one- and two-family dwellings in municipalities without a local building-code enforcement mechanism.
    • Where a municipality has adopted an enforcement mechanism, the permit conforms to the locally adopted process.
    • Separate electrical, plumbing, mechanical, and fire-protection permits are required in addition to the building permit under the state permit system.
    • For state, community-college-system, and university-system buildings, the permit is obtained from the state fire marshal.
    “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
    One more reviewed finding on this topic
    • Limited — Construction work described in RSA 155-A:2, I, including in Grafton County.
      “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
  • Building code adoptedAdopted (with conditions)

    Buildings, building components, and structures constructed in New Hampshire, including Grafton County.

    • Local enforcement and permitted administrative amendments are governed by RSA 155-A:3.
    • The statutory code definition identifies the listed 2024 International Codes, 2018 International Energy Conservation Code, and 2023 National Electrical Code, with amendments approved as of October 10, 2025.
    “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
    • Limited — Buildings in municipalities that establish a local enforcement mechanism, including any such municipality in Grafton County.
      “Perform inspections as may be necessary to assure compliance with the state building code;”
  • 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.”
    2 more reviewed findings on this topic
    • Limited — Certificates of occupancy issued under municipal building-code enforcement in Grafton County municipalities.
      “may include a requirement for a certificate of occupancy”
    • Limited — Buildings or structures in a municipality whose building-code regulations enact a certificate-of-occupancy requirement, including any such municipality in Grafton County.
      “The regulations adopted pursuant to paragraph I may include a requirement for a certificate of occupancy to be issued prior to the use or occupancy of any building or structure that is erected, remodeled, or undergoes a change or expansion of use subsequent to the effective date of such requirement.”
  • Zoning districtsPartial

    The New Hampshire Office of Planning and Development's identification of zoning districts and zoning-ordinance status relevant to municipalities, including Grafton County municipalities.

    • The OPD table identifies village districts with zoning but expressly does not represent a comprehensive review of all village districts in New Hampshire.
    • The table identifies districts as of December 2022; it states that the list will be updated as additional village districts with zoning are identified.
    • The source does not establish a complete current directory or map of every Grafton County municipality's zoning districts.
    • Local zoning ordinances and maps remain the operative municipal land-use controls.
    “This table includes those village districts identified by NH OPD as of December 2022 and does not represent a comprehensive review of all village districts in the state. As more village districts that have adopted zoning are identified, this list will be updated.”
  • Manufactured homesAllowed (with conditions)

    Siting manufactured housing in New Hampshire municipalities, including municipalities in Grafton County.

    • A municipality adopting land-use controls must allow manufactured housing on individual lots, in manufactured-housing parks and manufactured-housing subdivisions, or in all three types of locations, as specified by RSA 674:32.
    • 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.
    “Municipalities shall afford reasonable and realistic opportunities for the siting of manufactured housing as required in subparagraph (b) and a municipality shall not exclude manufactured housing completely from the municipality by regulation, zoning ordinance or by any other police power.”
  • 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 — Subsurface sewage and waste-disposal systems in Grafton County.
      “prior approval of the plans and specifications”
    • State (with conditions) — Subsurface sewage or waste-disposal systems in New Hampshire, including Grafton County.
      “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 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.”
    One more reviewed finding on this topic
    • Required — New buildings discharging sewage or other wastes, and sewage or waste-disposal systems, in New Hampshire including Grafton County.
      “No person shall construct any building from which sewage or other wastes will discharge or construct a sewage or waste disposal system without prior approval of the plans and specifications of the sewage or waste disposal system by the department.”
  • Septic inspectionRequired

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

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

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

    “Septic tanks shall be inspected for accumulation of sludge and surface scum at a frequency sufficient to allow the tank to be pumped by a licensed septage hauler when the combined thickness of the sludge and surface scum equal 1/3 or more of the tank depth.”
    3 more reviewed findings on this topic
    • Required — Constructed individual sewage disposal systems in Grafton County.
      “the constructed ISDS shall not be covered or placed in operation without final inspection and approval by the department”
    • Required — Subsurface sewage and waste-disposal systems in Grafton County subject to department approval.
      “shall not be covered or placed in operation without final inspection and approval by an authorized agent of the department”
    • Limited — Operating subsurface sewage or waste-disposal facilities in New Hampshire, including Grafton 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.”
  • Off-grid sanitationLimited

    Privies and alternative sewage disposal for occupied buildings in New Hampshire, including Grafton County.

    • A privy may be allowed only after local municipal health-official approval of location and construction.
    • At the option of local municipal health officials, Department of Environmental Services approval may also be required before construction.
    • Alternative sewage-disposal systems used to waive public-sewer connection must comply with applicable state and local regulations, be designed by a New Hampshire licensed designer, and have Department approval for construction after January 1, 1985.
    “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.”
    One more reviewed finding on this topic
    • Limited — Composting or incinerator toilets in New Hampshire structures.
      “Composting toilets and incinerator toilets in structures that do not have internal plumbing and that do not have a supplied water service to the building shall not require approval by the department.”
  • Well permitLimited

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

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

    well completion record deadline: 90 days after completion

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

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

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

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

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

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

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

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

    “the board of adjustment, building code board of appeals, or other applicable local board, after due notice and hearing, shall grant a waiver”
  • 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.”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Subdivision regulation by New Hampshire municipalities, including Grafton County municipalities.
      “shall have the authority to regulate the subdivision of land”
  • Building in a floodplainLimited

    Floodplain development in Grafton County municipalities that adopt floodplain ordinances.

    • Municipalities may adopt floodplain ordinances as part of National Flood Insurance Program enrollment.
    • A floodplain ordinance may be part of an existing zoning ordinance or a separate ordinance.
    • A separate ordinance must follow the legal and procedural requirements applicable to a zoning ordinance, including creation of a board of adjustment.
    “Municipalities may adopt floodplain ordinances as part of their enrollment in the National Flood Insurance Program.”
  • 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;”
  • Permit processPublished (with conditions)

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

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

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

    “Upon the submission of a completed application, the building official shall act to approve or deny a building permit within 30 days;”
    One more reviewed finding on this topic
    • Published (with conditions) — State building-permit processing in New Hampshire, including Grafton County where the state statute applies.
      “the building official shall act to approve or deny a building permit within 30 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.”

Inside cities and towns in Grafton County

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

  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units in New Hampshire municipalities, including municipalities in Grafton County.

    • A municipality that adopts zoning must allow one ADU in all zoning districts permitting single-family dwellings.
    • If the zoning ordinance contains no ADU provisions, one ADU is deemed a permitted accessory use as a matter of right, subject to building permits if required by statute.
    • Water supply and sewage disposal provisions apply.
    • Municipal regulations may address owner occupancy, parking, aesthetics, lot coverage, and occupancy, subject to statutory limits.

    maximum ADU living space: <= 950 square feet (unless otherwise authorized by the municipality) · minimum ADU living space: >= 750 square feet (municipality may not restrict total living space below 750 square feet)

    “One accessory dwelling unit, which may be either attached or detached, shall be allowed as a matter of right.”

Still unanswered

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

  • Owner-builder exemption — Owner-builder exemptions from building requirements in Grafton County.
  • Local zoning — Municipal and town zoning across Grafton County.
  • Minimum dwelling size — Minimum dwelling size generally in Grafton County.
  • Minimum lot size — Minimum lot size generally in Grafton County.
  • Setbacks — Building setbacks generally in Grafton County.
7 more unanswered
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Driveway access
  • Short-term rentals

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 Grafton County, New Hampshire

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

Grafton County scores 83/100 on the Bolthole Index, a strong county profile. Its strengths: a stronger property-autonomy legal backdrop and sparse surroundings — about 13,244 people within a 30-minute drive.

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

Grafton County requires a building permit only in limited cases (such as floodplains or specific zones), and it has no county-wide zoning. Onsite septic is permitted by New Hampshire Department of Environmental Services, Subsurface Systems Bureau. 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 Grafton County, New Hampshire?

Land in Grafton County runs about $4,312 per acre, based on the latest county data.

What is the water situation in Grafton County?

Grafton County gets about 47.7" of rain a year, with severe drought in roughly 1.4% of years.

How remote is Grafton County?

A representative private-land location has about 13,244 people within a 30-minute drive and 989,823 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.

Off-grid gear

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

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How Grafton compares in New Hampshire

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