Carroll County, NH: No Zoning, Owner-Builder Allowed

Building permits are required in Carroll County, New Hampshire before covered construction starts, and each town with a local code-enforcement process issues them under its own procedure^1,2. Carroll County does not administer zoning, so the town where the parcel lies sets zoning³. Septic permits come from the state Department of Environmental Services for every address in the county, inside a town or not⁴.

At a glance

Building permit: Building permit required before covered construction; the town issues it where it has a local enforcement process¹
Zoning: No county zoning administration; ask the parcel's town about its local rules³
Septic permit: State DES plan approval is required in every town; local requirements may also apply⁴
Owner-builder: No blanket permit or inspection exemption; limited owner-performed plumbing and fuel-gas license exceptions may apply^2,5
RV on private land: Not settled by any county or statewide private-land rule; ask your town^3,6
Wells: No universal construction permit, but drillers must file a completion record with the state within 90 days⁷
Permit fees: Set by each town; no Carroll County fee schedule found²

Who to call

Building permits

NH Division of Fire Safety - Office of the State Fire Marshal

Administers New Hampshire's state building permit system for towns without a local code-enforcement mechanism that have requested state assistance, and for state-owned and community-college-system property

(603) 223-4289

fmo@dos.nh.gov

33 Hazen Drive, Concord, NH 03305

Building permits

NH State Building Permit Program (Office of the State Fire Marshal)

Describes when the State Building Permit Program applies: only to state-owned or community-college property, municipal projects with a written request for state help, or towns without a code-enforcement mechanism that have requested assistance in writing

One more officeSeptic permits

Septic permits

New Hampshire Department of Environmental Services

Construction Approval and Subsurface Systems Bureau permitting for septic systems statewide, including Carroll County, since the county does not administer septic

(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 9, 2026.

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

Yes.

Yes. Before starting construction covered by the New Hampshire state building code in Carroll County, the person responsible must obtain a permit¹. All buildings, building components and structures constructed in Carroll County must comply with the state building code and state fire code⁸. Where a municipality has adopted an enforcement mechanism, its locally adopted permit process controls¹. A building official must generally approve or deny a completed application within 30 days; nonresidential applications and residential projects encompassing more than 10 dwelling units have a 60-day decision period¹. Building permit fees are set by each municipality through its fee schedule, and we could not find a single Carroll County fee amount². Ask the town office for the parcel which building permit application, plans, fees and inspections apply before ordering plans or beginning work.

Who issues building permits in Carroll County?

The town office serving the parcel is the first call for building permits because municipalities with a local code-enforcement mechanism use their own permit process; septic permits stay with the state Department of Environmental Services regardless of town^2,4. The New Hampshire State Building Permit Program applies only to state-owned property, community-college property, municipal projects requesting help, or projects in municipalities without code enforcement that have requested state assistance in writing⁹. The state permit system excludes one- and two-family dwellings in municipalities without a local building-code enforcement mechanism². Reach the Office of the State Fire Marshal at (603) 223-4289, 33 Hazen Drive, Concord, NH 03305, to ask whether the state program covers a project¹⁰. Ask the town which office issues the building permit for a home when the town has no local enforcement mechanism. Where a municipal building official enforces the code, that official may perform inspections needed to verify compliance; we could not confirm a single countywide inspection schedule¹¹.

Does Carroll County have zoning?

Carroll County does not administer countywide zoning; land-use authority is municipal, so the controlling ordinance is the one adopted by the town where the parcel lies.

Carroll County does not administer countywide zoning; land-use authority is municipal, so the controlling ordinance is the one adopted by the town where the parcel lies³. A municipal planning board may regulate subdivision after the municipality authorizes it under state procedures¹². Agricultural operations are not categorically exempt from dimensional standards, setbacks, driveway rules or similar site requirements, although the applicable local board may grant a limited waiver after notice and hearing when the statutory conditions are met¹³. Floodplain rules are also municipal: participating municipalities may adopt a floodplain ordinance through the zoning-ordinance process¹⁴. Ask the town office to confirm the parcel's zoning district, setbacks, permitted uses, subdivision status and flood-hazard review before designing a home.

How do septic permits work in Carroll County?

The New Hampshire Department of Environmental Services administers septic approval in Carroll County, while local authorities may impose additional requirements.

The New Hampshire Department of Environmental Services administers septic approval in Carroll County, while local authorities may impose additional requirements⁴. Reach DES at (603) 271-3503, 29 Hazen Drive, Concord, NH 03302-0095, for plan approval before constructing a disposal system or a building that will discharge sewage or other waste^4,15. Construction approval is not operational approval: the system cannot be covered or put into operation until an authorized DES agent completes the final inspection and approval⁴. If a public sewer is within 100 feet of your building, state law requires connecting to it instead of using a septic system, unless your town has increased that distance by ordinance¹⁶. Only about 4.7 percent of Carroll County soils lack severe limitations for a conventional septic drain field, so arrange a site evaluation early and allow for a more complex design¹⁷.

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

We could not confirm a countywide rule that authorizes living in an RV or tiny home on private land in Carroll County; ask the town office that governs the parcel about zoning, occupancy and health rules. New Hampshire's recreational-campground law governs licensed campgrounds and does not answer whether a person may live in an RV on an individual private parcel⁶. A composting or incinerator toilet does not require state approval when a structure has neither internal plumbing nor supplied water service¹⁸. If a structure has internal plumbing and supplied water, the same rule requires an individual sewage-disposal system with state operational approval even when the toilet is not connected to that system¹⁸. Tiny-home dimensions, setbacks and residential use remain questions for the parcel's town because Carroll County does not administer zoning³.

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

Ask the town office to identify the zoning district, setbacks, floodplain review and local code-enforcement process because Carroll County does not administer zoning.

Ask the town office to identify the zoning district, setbacks, floodplain review and local code-enforcement process because Carroll County does not administer zoning^3,14.

Obtain state approval for the septic plans before constructing a building that will discharge sewage or building the disposal system⁴.

Apply through the process identified by the town before starting covered construction; where the town has an enforcement mechanism, its locally adopted process controls¹.

Track the decision window after the application is complete: the general period is 30 days, while nonresidential applications and residential projects encompassing more than 10 dwelling units have 60 days¹.

If the project uses a well, have the water-well contractor file the required completion record after finishing the well⁷.

Request applicable building inspections before covered work is concealed, and arrange final septic inspection before the system is covered or used^4,19.

Ask the town whether it requires a certificate of occupancy before use; municipalities may enact and enforce that requirement, while the state Fire Marshal issues certificates for state, community-college-system and university-system buildings².

What to check before you buy land in Carroll County

Carroll County receives about 51.7 inches of precipitation a year, experiences severe drought in about 1.7 percent of years and is roughly 87.9 percent wooded.

Carroll County receives about 51.7 inches of precipitation a year, experiences severe drought in about 1.7 percent of years and is roughly 87.9 percent wooded¹⁷. About 26.6 percent of the county's land is federally owned, so confirm parcel boundaries, legal access and easements rather than assuming nearby open land is usable¹⁷. Only about 4.7 percent of county soils lack severe limitations for a conventional septic drain field, making an early site evaluation especially valuable¹⁷. Farmland value averages about $5,885 per acre, while the typical home value is about $516,199¹⁷. The effective property-tax rate is about 1.1 percent and the median annual property-tax bill is about $3,685¹⁷. The nearest city of 100,000 or more people is about 63 miles from the county center¹⁷. Typical homeowners insurance is about $1,380 per year, but obtain a parcel- and project-specific quote¹⁷.

Watch-outs

A building permit is required before covered construction begins, but the issuing route depends on the project and the town's enforcement process; the state Fire Marshal's office only steps in for a municipality without code enforcement after receiving a written request for assistance^1,9.
New Hampshire's campground rules do not settle whether long-term RV occupancy is allowed on an individual private parcel; ask the town office before placing or occupying an RV⁶.
Owner-builders do not have a blanket exemption from building permits or inspections; limited plumbing and fuel-gas licensing exceptions do not erase applicable code, permit or inspection requirements^2,5.

Sources

19 official pages, each quoted and re-checked · written October 9, 2026

Written October 9, 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.

Off-grid gear

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

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Compared with neighboring counties

Rule	Carroll County	Grafton County	Belknap County	Strafford County	Merrimack County	Coos County	Sullivan County
Building permit	Required	Limited	Required	Limited	Required	Required	Limited
County zoning	No	No	No	Yes	Yes	Yes	No
Septic permits	NHDES	NH Dept. of Env. Services	NHDES	NH Dept. of Env. Services	NHDES	NH Dept. of Env. Services	NHDES

Answers from the rulebook for Carroll County

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

Carroll County rules

County-wide zoningAbsent
The county does not administer zoning; in New Hampshire zoning is a municipal (town) function and Carroll County has no planning/zoning department.
Carroll County, NH - Departments ↗From the county’s own site, awaiting a second reviewer

New Hampshire rules that apply here

Building permitRequired
Construction work governed by RSA 155-A:2, I, including construction in Carroll County.
- Before starting covered construction, the responsible person must obtain a permit.
- In municipalities that have adopted an enforcement mechanism under RSA 155-A:3, the permit must conform to the locally adopted process and may not be issued unless it results in compliance with the state building code.
- For state, community college system, and university buildings and structures, the permit is obtained from the state fire marshal.
- No building permit may be denied solely because streets or utilities are incomplete when their construction has been secured by an approved bond or other security; however, on land in a subdivision plat or site plan, a building may not be used or occupied before required streets and utilities are complete except on terms authorized by the planning board.
- The building official may not issue a permit for proposed construction, remodeling, or maintenance that does not comply with applicable zoning ordinances, building codes, or planning board regulations.
- The building official must act on a completed application within 30 days, except that nonresidential applications or residential applications encompassing more than 10 dwelling units must be approved or denied within 60 days.
- Collocation and modification applications for personal wireless service facilities are governed by RSA 12-K:10 and RSA 12-K:11 where applicable.
ordinary completed-application decision deadline: 30 days (Nonresidential applications and residential applications encompassing more than 10 dwelling units are subject to a 60-day deadline.) · nonresidential or residential application exceeding 10 dwelling units decision deadline: 60 days (Applies after submission of a completed application.)
“Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
Section 155-A:4 Permit Required ↗Re-checked Sep 30, 2026
3 more reviewed findings on this topic
- Required — Construction work governed by RSA 155-A:2, I in Carroll County and throughout New Hampshire.
  “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
  RSA 155-A:4 Permit Required ↗Re-checked Oct 4, 2026
- Required — Construction work described in RSA 155-A:2, I, in Carroll County.
  “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
  Section 155-A:4 Permit Required ↗Re-checked Sep 30, 2026
- Required — Construction and renovation subject to New Hampshire's state building code, administered through the state building permit system where the municipality has not adopted a local enforcement mechanism, and buildings owned by the State, the community college system, or the university system.
  “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
  Chapter 155-A New Hampshire Building Code ↗Re-checked Sep 11, 2026
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.”
RSA 155-A:4 — Permit Required ↗Re-checked Oct 3, 2026
2 more reviewed findings on this topic
- Conditional — A residence occupied by the owner and the owner's immediate family under New Hampshire's building-code enforcement mechanism.
  “The provisions of paragraph I shall not apply to a residence which is occupied by the owner and his or her immediate family, unless the condition of such premises constitutes a clear and imminent danger to the life or health of persons other than the occupant or occupants.”
  Section 155-A:3 Enforcement mechanism ↗Re-checked Oct 7, 2026
- 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.”
  RSA 153:36 — Exceptions ↗Re-checked Oct 3, 2026
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.”
RSA 155-A:1 Definitions ↗Re-checked Oct 5, 2026
2 more reviewed findings on this topic
- Adopted — All buildings, building components, and structures constructed in New Hampshire, including Carroll County.
  “All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code.”
  Section 155-A:2 State Building Code ↗Re-checked Sep 30, 2026
- Adopted (with conditions) — Buildings, building components, and structures constructed in New Hampshire, including Carroll County.
  “All buildings, building components, and structures constructed in New Hampshire shall comply with the state building code and state fire code.”
  Chapter 155-A New Hampshire Building Code ↗Re-checked Oct 4, 2026
InspectionsLimited
Building-code inspections in Carroll County.
- A local building official performs inspections as may be necessary to assure compliance where a local enforcement agency exists.
- Where there is no local enforcement agency, the state fire marshal or designee may enforce the building code upon written municipal request.
- The reviewed statute does not establish that every project receives the same inspection schedule.
“Perform inspections as may be necessary to assure compliance with the state building code;”
Chapter 155-A New Hampshire Building Code ↗Re-checked Sep 30, 2026
One more reviewed finding on this topic
- Required — Work performed under the scope of building permits issued through the New Hampshire state building permit system.
  “Required inspections for work performed under the scope of the issued building permits shall be requested by the permit holder and performed by the fire marshal or designee at the appropriate times during the course of construction and prior to concealing any of the work.”
  Saf-C 8100 State Building Permit System ↗Re-checked Sep 11, 2026
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.”
Saf-C 8100 State Building Permit System ↗Re-checked Sep 11, 2026
One more reviewed finding on this topic
- Limited — Certificates of occupancy under New Hampshire building-code administration.
  “The regulations adopted pursuant to paragraph I may include a requirement for a certificate of occupancy to be issued prior to the use or occupancy of any building or structure that is erected, remodeled, or undergoes a change or expansion of use subsequent to the effective date of such requirement. The municipality shall be responsible for implementation and enforcement of the requirement under this paragraph.”
  Chapter 155-A New Hampshire Building Code ↗Re-checked Oct 4, 2026
Zoning districtsPublished
New Hampshire's statutory zoning-district framework, under which a local legislative body may divide a municipality into zoning districts and regulate buildings, structures, and land within those districts.
- The statute supplies enabling authority and does not publish the actual district maps or district schedules for each municipality.
- District boundaries, number, shape, area, and regulations are determined locally by the municipality's local legislative body.
- Regulations must be uniform for each class or kind of building throughout each district, but regulations may differ between districts.
- Local zoning remains a municipal-government responsibility.
“The local legislative body may divide the municipality into districts of a number, shape and area as may be deemed best suited”
Section 674:20 Districts ↗Re-checked Oct 5, 2026
Minimum lot sizeDistrict specific
New Hampshire municipalities and qualifying counties may adopt local zoning regulations governing lot sizes; the statute does not set a single statewide minimum lot size.
- The actual minimum depends on the locally adopted zoning ordinance and district.
- The cited statute authorizes local regulation and is not itself a numeric minimum-lot-size rule.
“For the purpose of promoting the health, safety, or the general welfare of the community, the local legislative body of any city, town, or county in which there are located unincorporated towns or unorganized places is authorized to adopt or amend a zoning ordinance under the ordinance enactment procedures of RSA 675:2-5. The zoning ordinance shall be designed to regulate and restrict: [...] Lot sizes, the percentage of a lot that may be occupied, and the size of yards, courts and other open spaces;”
gc.nh.gov ↗Re-checked Oct 5, 2026
SetbacksDistrict specific
New Hampshire municipalities and qualifying counties may adopt local zoning regulations governing yards and other open spaces that may include setback controls; the exact setback depends on the local ordinance and district.
- The actual setback distance depends on the locally adopted zoning ordinance and district.
- The cited statute authorizes local dimensional regulation and is not itself a numeric setback rule.
“The zoning ordinance shall be designed to regulate and restrict: [...] Lot sizes, the percentage of a lot that may be occupied, and the size of yards, courts and other open spaces;”
gc.nh.gov ↗Re-checked Oct 5, 2026
Lot coverageDistrict specific
New Hampshire municipalities and qualifying counties may adopt local zoning regulations limiting the percentage of a lot that may be occupied; the exact percentage depends on the local ordinance and district.
- The actual lot-coverage limit depends on the locally adopted zoning ordinance and district.
- The cited statute is an enabling provision and does not establish a statewide percentage.
“The zoning ordinance shall be designed to regulate and restrict: [...] Lot sizes, the percentage of a lot that may be occupied, and the size of yards, courts and other open spaces;”
gc.nh.gov ↗Re-checked Oct 5, 2026
Building heightDistrict specific
New Hampshire municipalities and qualifying counties may adopt local zoning regulations governing building height and number of stories; the exact height depends on the local ordinance and district.
- The actual building-height limit depends on the locally adopted zoning ordinance and district.
- The cited statute authorizes local regulation and does not establish a statewide height limit.
“The zoning ordinance shall be designed to regulate and restrict: (a) The height, number of stories and size of buildings and other structures;”
gc.nh.gov ↗Re-checked Oct 5, 2026
Tiny homesLimited
Tiny houses and tiny houses on wheels qualifying as innovative housing structures under RSA 674:82-:83.
- A tiny house must be a detached building intended for human habitation with permanent living, sleeping, eating, cooking, and sanitation provisions; be 600 square feet or less excluding lofts; comply with the tiny-home provisions of the state building code; and be on a stable ground surface or foundation.
- 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, subject to applicable land-use requirements.
- For zoning, innovative housing structures are treated as single-family dwellings or accessory dwelling units and must meet applicable state drinking-water and wastewater-treatment-and-disposal laws and regulations.
- A tiny house on wheels built on a trailer chassis without motive power is not a camp trailer or recreational vehicle when constructed for human habitation.
maximum tiny-house floor area: <= 600 square feet (Excludes lofts.)
“A municipality may permit an innovative housing structure to be placed or erected on an individual house lot where single-family dwellings are allowed”
RSA 674:82: Innovative Housing Structures—Definitions ↗Re-checked Nov 4, 2026
Manufactured homesLimited
Manufactured housing sited in New Hampshire municipalities that adopt land-use-control measures.
- A municipality may not completely exclude manufactured housing by regulation, zoning ordinance, or other police power.
- A municipality with land-use controls must allow manufactured housing on individual residential lots in most, though not necessarily all, residential areas and lots; or in manufactured-housing parks and qualifying subdivisions in most, though not necessarily all, such areas and lots; or in all three location types.
- Manufactured housing on qualifying individual lots must meet the lot-size, frontage, space, and other reasonable controls applicable to conventional single-family housing in the same district.
- A special exception or special permit may be required only where the municipality requires it for comparable single-family housing on individual lots or in subdivisions.
- Municipalities permitting manufactured-housing parks must provide reasonable and realistic development opportunities and reasonable and realistic lot-size and overall-density requirements.
“a municipality shall not exclude manufactured housing completely from the municipality by regulation, zoning ordinance or by any other police power.”
RSA 674:32: Manufactured Housing ↗Re-checked Nov 4, 2026
Who permits septicState (with conditions)
Subsurface sewage and waste-disposal systems serving buildings or lots in Carroll County.
- Local authorities may impose additional requirements.
- Where local regulations require prior local approval, the applicant must certify compliance before applying to the Department of Environmental Services.
- The state requirements are minimum requirements.
“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. Nothing herein shall be construed to modify or lessen the powers conferred upon local authorities by other statutes; provided, however, that in all instances the requirements contained in this chapter shall be considered as minimum.”
Chapter 485-A Water Pollution and Waste Disposal ↗Re-checked Oct 4, 2026
2 more reviewed findings on this topic
- State (with conditions) — Subsurface sewage and waste disposal systems serving property in Carroll 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.”
  Section 485-A:32 Prior Approval; Permits ↗Re-checked Sep 30, 2026
- Mixed — Statewide administration of sewage and waste disposal system approvals in New Hampshire.
  “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.”
  RSA 485-A:29 Submission and Approval of Plans and Specifications ↗Re-checked Sep 11, 2026
Septic permitRequired
Septic systems for any structure discharging wastewater on site with a water supply connected, statewide New Hampshire
- Plans must be designed, prepared and submitted by a permitted NH septic system designer
- Approval for construction needed before converting seasonal to full-time occupancy, increasing load on an existing system, or commencing additions/replacement/expansion/relocation of a structure, subject to RSA 485-a:38, II-a
- Local municipal approval also required where applicable
- NHDES inspector inspects before operational approval
- Systems near water may need additional shoreland permit
- New rules and forms effective February 1, 2026; outdated forms returned without review
“a septic system is required for any structure from which wastewater will be discharged on site and to which a water supply is or will be connected.”
Septic Systems - NH Department of Environmental Services ↗Re-checked Nov 6, 2026
3 more reviewed findings on this topic
- Required — Construction of a building from which sewage or other wastes will discharge, or construction of a sewage or waste disposal system, in Carroll 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.”
  Section 485-A:32 Prior Approval; Permits ↗Re-checked Sep 30, 2026
- Required — Construction of a building from which sewage or other wastes will discharge, or construction of a sewage or waste-disposal system.
  “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.”
  Chapter 485-A Water Pollution and Waste Disposal ↗Re-checked Oct 4, 2026
- Required — Construction of a building from which sewage or other wastes will discharge, or construction of a sewage or waste disposal system, statewide in New Hampshire.
  “No person shall construct any building from which sewage or other wastes will discharge or construct a sewage or waste disposal system without prior approval of the plans and specifications of the sewage or waste disposal system by the department.”
  RSA 485-A:32 Prior Approval; Permits ↗Re-checked Sep 11, 2026
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.”
RSA 485-A:29 Submission and Approval of Plans and Specifications ↗Re-checked Sep 11, 2026
2 more reviewed findings on this topic
- Required — Inspection and approval of subsurface sewage disposal systems in Carroll County.
  “As required by RSA 485-A:29, I, the constructed ISDS shall not be covered or placed in operation without final inspection and approval by the department or by an authorized agent of the department.”
  Env-Wq 1000 rules ↗Re-checked Sep 26, 2026
- Limited — Department review and site inspections associated with subdivision plans and sewage or waste-disposal-system applications.
  “The constructed sewage or waste disposal systems shall be in strict accordance with approved plans, and the facilities shall not be covered or placed in operation without final inspection and approval by an authorized agent of the department.”
  Chapter 485-A Water Pollution and Waste Disposal ↗Re-checked Oct 4, 2026
Off-grid sanitationLimited
Composting or incinerator toilets in New Hampshire structures.
- Department approval is not required where the structure has neither internal plumbing nor supplied water service.
- If the structure has internal plumbing and water service from a drilled well, internal or external storage tank, or municipal water system, an ISDS with DES operational approval is required even if the toilet is not connected to it.
- Toilet waste disposal must comply with applicable state rules and local law.
“Composting toilets and incinerator toilets in structures that do not have internal plumbing and that do not have a supplied water service to the building shall not require approval by the department.”
Env-Wq 1000 Subdivisions and Individual Sewage Disposal Systems ↗Re-checked Sep 11, 2026
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.”
RSA 482-B:10 Record of Wells; Monitoring Wells ↗Re-checked Sep 11, 2026
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.”
RSA 147:8 Toilets; Drains ↗Re-checked Sep 11, 2026
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”
RSA 674:32-c — Other General Provisions ↗Re-checked Sep 12, 2026
4 more reviewed findings on this topic
- Available (with conditions) — Agricultural operations or activities in a New Hampshire zoning district or location where they are not explicitly addressed.
  “In accordance with RSA 672:1, III-d, whenever agricultural operations or activities as defined in RSA 21:34-a are not explicitly addressed with respect to any zoning district or location, such operations or activities shall be deemed to be permitted there, as either a primary or accessory use, so long as conducted in accordance with best management practices guidelines adopted by the commissioner of the department of agriculture, markets, and food and with applicable federal and state laws, regulations, and rules.”
  RSA 674:32-a Presumption ↗Re-checked Oct 1, 2026
- Available (with conditions) — Agricultural operations or activities under RSA 21:34-a that are not explicitly addressed in a local zoning district or location.
  “In accordance with RSA 672:1, III-d, whenever agricultural operations or activities as defined in RSA 21:34-a are not explicitly addressed with respect to any zoning district or location, such operations or activities shall be deemed to be permitted there, as either a primary or accessory use, so long as conducted in accordance with best management practices guidelines adopted by the commissioner of the department of agriculture, markets, and food and with applicable federal and state laws, regulations, and rules.”
  RSA 674:32-a Presumption ↗Re-checked Oct 5, 2026
- Conditional — Existing agricultural uses and activities established pursuant to RSA 674:32-a, including expansion, alteration, or change to another agricultural use or activity.
  “Any agricultural use or activity which exists pursuant to RSA 674:32-a may without restriction be expanded, altered to meet changing technology or markets, or changed to another agricultural use or activity, as set forth in RSA 21:34-a, so long as any such expansion, alteration, or change complies with all federal and state laws, regulations, and rules, including agricultural best management practices guidelines adopted by the commissioner of the department of agriculture, markets, and food; subject, however, to the following limitations:”
  RSA 674:32-b Existing Agricultural Uses and Activities ↗Re-checked Oct 5, 2026
- Available — Normal agricultural operations otherwise subject to the terrain-alteration permitting provisions of RSA 485-A:17.
  “Normal agricultural operations shall be exempt from the provisions of this section.”
  RSA 485-A:17 Terrain Alteration ↗Re-checked Oct 5, 2026
Shed and accessory-building permit exemptionAvailable
A tent erected as an accessory structure on property containing an owner-occupied one- or two-family dwelling in New Hampshire.
- The structure must be a tent erected as an accessory structure.
- The property must be an owner-occupied one- or two-family dwelling.
- The statutory exemption applies to a tent of any size.
- Applicable state or local building requirements and land-use restrictions may still apply.
tent size: any size (Only when erected as an accessory structure on an owner-occupied one- or two-family dwelling.)
“A building permit shall not be required for a tent of any size erected as an accessory structure on property that is an owner-occupied, one or 2-family dwelling.”
RSA 155-A:2 State Building Code ↗Re-checked Nov 4, 2026
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.”
RSA 674:35 — Power to Regulate Subdivisions ↗Re-checked Sep 12, 2026
2 more reviewed findings on this topic
- Regulated (with conditions) — Subdivision of land within New Hampshire municipalities, through locally authorized planning-board regulation under the state statutory framework.
  “The planning board of a municipality shall have the authority to regulate the subdivision of land under the enactment procedures of RSA 675:6.”
  RSA 674:35 Power to Regulate Subdivisions ↗Re-checked Oct 1, 2026
- Regulated (with conditions) — Subdivision of land in New Hampshire where the municipality has authorized its planning board to regulate subdivision under RSA 675:6.
  “A municipality may by ordinance or resolution authorize the planning board to require preliminary review of subdivisions, and to approve or disapprove, in its discretion, plats, and to approve or disapprove plans showing the extent to which and the manner in which streets within subdivisions shall be graded and improved and to which streets water, sewer, and other utility mains, piping, connections, or facilities within subdivisions shall be installed.”
  RSA 674:35 Power to Regulate Subdivisions ↗Re-checked Oct 5, 2026
Building in a floodplainLimited
Statewide development involving dredging, excavation, fill, mining, forest-product transport, or construction in or on the border of state surface waters, and activity significantly altering terrain so as to impede natural runoff or create unnatural runoff; this includes projects proposing fill within the 100-year floodplain.
- Detailed plans and requested additional information must be submitted to the department at least 30 days before the activity; operations cannot begin until the department issues a permit.
- For proposed fill within the 100-year floodplain, the application must identify the floodplain boundary and compensatory-storage locations and volumes. Compensatory storage must be at equal or lower elevations than the fill, on the same site, hydraulically connected to the floodplain, and have removal volume at least equal to proposed fill volume.
- For fill exceeding 0.5 acre-feet or a bridge or culvert crossing, the application must include the watershed size, bank photographs, and supporting floodplain-impact analysis.
- If hydraulic modeling indicates raised flood stages on abutting properties or adverse effects on channel stability or surface-water quality, compensatory flood storage or conveyance must ensure no increase in flood stages on abutting properties and no adverse effect on channel stability.
- Normal agricultural operations are exempt from RSA 485-A:17. Timber harvesting is issued a permit by rule if it follows the specified best-management practices and an intent-to-cut form is signed. Qualifying trail-modification operations are issued a general permit by rule when performed by a nonprofit, municipality, or government entity, limited to a disturbed area no more than 12 feet wide, and conducted under the specified best-management practices.
plans submission lead time: >= 30 days (Before undertaking the regulated activity.) · additional floodplain-fill analysis threshold: > 0.5 acre-feet (Also required for any bridge or culvert crossing.)
“For all projects with proposed placement of fill within the 100-year floodplain, the applicant shall provide the following with the application:”
RSA 485-A:17 Terrain Alteration ↗Re-checked Nov 4, 2026
One more reviewed finding on this topic
- Limited — Municipal floodplain and fluvial-erosion-hazard land-use regulation in New Hampshire.
  “Municipalities may adopt floodplain ordinances as part of their enrollment in the National Flood Insurance Program.”
  RSA 674:56 Flood Hazards ↗Re-checked Nov 4, 2026
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.”
Section 78-A:4-a Advertisements of Short-Term Rentals ↗Re-checked Oct 5, 2026
Permit feesPublished (with conditions)
Construction projects subject to the New Hampshire state fire marshal building permit system, including applicable projects in municipalities without a building official or other enforcement mechanism.
- The state fire marshal permit system applies to applicable construction projects under Saf-C 8100.
- New commercial construction building permits are charged at $0.30 per gross square foot.
- Electrical, plumbing, and mechanical permit fees are calculated from total contracted cost and are not less than $75.00.
- Fire protection system permit fees are $1.00 per device with a minimum fee of $35.00.
- Re-inspection fees are $100 per re-inspection for building permits and fire protection system permits.
- Commercial renovation building permits are charged at $0.15 per gross square foot with a minimum fee of $50.00.
- Fees for other structures and uses are $1.00 per gross square foot with a minimum fee of $35.00.
- Third-party inspection services, when required, are paid directly by the applicant.
new commercial construction building permit fee: 0.3 USD per gross square foot · commercial renovation building permit fee: 0.15 USD per gross square foot (minimum $50.00) · other structures and uses building permit fee: 1 USD per gross square foot (minimum $35.00) · fire protection system permit fee: 1 USD per device (minimum $35.00) · building permit re-inspection fee: 100 USD per re-inspection
“The building permit fee shall be $.30 per gross square foot;”
Saf-C 8100 State Building Permit System ↗Re-checked Oct 7, 2026
4 more reviewed findings on this topic
- Variable (with conditions) — Building permits, inspections, and certificates of occupancy issued through local enforcement mechanisms in New Hampshire, including municipalities within Carroll County.
  “(e) A schedule of fees, or a provision authorizing the governing body to establish fees, to be charged for building permits, inspections, and for any certificate of occupancy enacted pursuant to paragraph IV.”
  RSA 155-A:3 Enforcement mechanism ↗Re-checked Oct 7, 2026
- Variable (with conditions) — Building-permit, inspection, and certificate-of-occupancy fees under New Hampshire's state building-code framework, including Carroll County municipalities.
  “A schedule of fees, or a provision authorizing the governing body to establish fees, to be charged for building permits, inspections, and for any certificate of occupancy enacted pursuant to paragraph IV.”
  Chapter 155-A New Hampshire Building Code ↗Re-checked Oct 7, 2026
- Variable (with conditions) — Building permits, inspections, and certificates of occupancy administered through New Hampshire municipal enforcement mechanisms.
  “(e) A schedule of fees, or a provision authorizing the governing body to establish fees, to be charged for building permits, inspections, and for any certificate of occupancy enacted pursuant to paragraph IV.”
  Section 155-A:3 Enforcement mechanism ↗Re-checked Oct 7, 2026
- Published (with conditions) — State building permit fees collected by the state fire marshal under the state building permit system.
  “The building permit fee shall be $.30 per gross square foot;”
  Saf-C 8100 State Building Permit System ↗Re-checked Sep 11, 2026
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;”
RSA 155-A:4 Permit Required ↗Re-checked Sep 11, 2026
3 more reviewed findings on this topic
- Partial — New Hampshire building-permit processing, including Carroll County jurisdictions with local enforcement mechanisms.
  “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.”
  RSA 155-A:4 Permit Required ↗Re-checked Oct 4, 2026
- Published (with conditions) — Building-permit application contents and decision deadlines under New Hampshire law, including applications affecting Carroll County.
  “Upon the submission of a completed application, the building official shall act to approve or deny a building permit within 30 days”
  Section 155-A:4 Permit Required ↗Re-checked Sep 30, 2026
- Partial — Building-permit application process in Carroll County under the New Hampshire building code.
  “Upon the submission of a completed application, the building official shall act to approve or deny a building permit within 30 days; provided, however, that nonresidential applications or residential applications encompassing more than 10 dwelling units shall be approved or denied within 60 days.”
  Section 155-A:4 Permit Required ↗Re-checked Sep 30, 2026
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”
Chapter 216-I Recreational Campgrounds and Camping Parks ↗Re-checked Sep 11, 2026
2 more reviewed findings on this topic
- Temporary only (with conditions) — Recreational-vehicle occupancy at a recreational campground or camping park regulated under RSA chapter 216-I.
  “temporary occupancy for recreational dwelling purposes only, and not for permanent year-round residency”
  RSA Chapter 216-I: Recreational Campgrounds and Camping Parks ↗Re-checked Nov 4, 2026
- Temporary only (with conditions) — Occasional commercial or noncommercial recreational-vehicle use on a parcel of land outside the general RSA chapter 216-I campground requirements.
  “not more than 7 days in any calendar year”
  RSA Chapter 216-I: Recreational Campgrounds and Camping Parks ↗Re-checked Nov 4, 2026
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.”
RSA 674:41 Erection of Buildings on Streets; Appeals ↗Re-checked Sep 21, 2026
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.”
  RSA 155-A:1 Definitions ↗Re-checked Oct 1, 2026
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.”
RSA 674:16 Grant of Power ↗Re-checked Oct 1, 2026
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”
  RSA 674:16 Grant of Power ↗Re-checked Oct 5, 2026

Inside cities and towns in Carroll County

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

Certificate of occupancyLimited
Certificates of occupancy for buildings in Carroll County where a municipality has enacted such a requirement.
- A municipality may require a certificate of occupancy before use or occupancy of a building or structure erected, remodeled, or subject to a change or expansion of use after the requirement becomes effective.
- The municipality is responsible for implementation and enforcement.
“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.”
RSA 155-A:3 Enforcement mechanism ↗Re-checked Sep 26, 2026
Building in a floodplainLimited
Floodplain development in Carroll 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 a zoning ordinance or a separate ordinance.
- A separate floodplain ordinance requires the legal and procedural requirements applicable to a zoning ordinance, including creation of a board of adjustment.
- Special flood-hazard areas in an NFIP municipality are designated by FEMA flood-insurance-rate maps, subject to local adoption of map amendments.
“Municipalities may adopt floodplain ordinances as part of their enrollment in the National Flood Insurance Program. Such ordinances shall be adopted pursuant to the authority granted under RSA 674:16 and 17, and shall be adopted and amended pursuant to the procedures in RSA 675 for the adoption and amendment of zoning ordinances.”
RSA 674:56 Flood Hazards ↗Re-checked Sep 26, 2026

Set by your town or city, not the county

In New Hampshire, zoning is adopted by each town or city, so Carroll 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
Living in an RV
Camping on your land
Accessory dwellings

Still unanswered

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

Local zoning — Aggregate local-zoning status across Carroll County municipalities and any unincorporated areas.
Driveway access — Driveway or street-access requirements for development in Carroll County.

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

Living off-grid in Carroll County, New Hampshire

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

Carroll County scores 81/100 on the Bolthole Index, a strong county profile. Its strengths: a stronger property-autonomy legal backdrop and sparse surroundings — about 16,416 people within a 30-minute drive.

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

Land in Carroll County runs about $5,885 per acre, based on the latest county data.

What is the water situation in Carroll County?

Carroll County gets about 51.7" of rain a year, with severe drought in roughly 1.7% of years.

How remote is Carroll County?

A representative private-land location has about 16,416 people within a 30-minute drive and 1,309,584 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.

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