Bolthole Index

Hillsborough County, New Hampshire

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

68Index Score / 100
#7 of 10 in New Hampshire

Hillsborough County, New Hampshire has no county building department: covered construction must comply with the state building and fire codes and requires a permit, generally through the city or town's process12. Municipalities also control zoning, while New Hampshire's Department of Environmental Services handles septic approvals statewide34.

At a glance

Building permit
Required for covered work; follow the city or town process rather than a county process25
Zoning authority
Set town by town, not by the county; Manchester's Zoning Ordinance is one example3
Septic permits
NH DES permits every septic system statewide, the same in every town4
Owner-builder (septic)
NHDES allows a homeowner to install their own septic system for their primary home without a licensed installer6
RV on your land
Allowed only up to 7 days a year without a campground permit, with a compliance statement filed with your town7
Off-grid toilets
A composting or incinerator toilet needs no DES approval if the structure has no internal plumbing or water service8
Public sewer hookup
Required instead of a septic system if a public sewer runs within 100 feet of the building9

Who to call

Building permits

City of Manchester Planning and Community Development — Building Division

Building code administration, permit approval, field inspections, Zoning Ordinance enforcement, and certificates of occupancy for the City of Manchester — the largest city in Hillsborough County, cited here as a labeled example; every other city or town in the county has its own office

(603) 624-6450

[email protected]

One City Hall Plaza, West Wing, Manchester, NH 03101

Septic permits

New Hampshire Department of Environmental Services — Subsurface Systems Bureau

Reviews septic system design plans and issues the Approval for Septic System Construction and Approval for Operation required statewide, including for every town in Hillsborough County

(603) 271-3503

29 Hazen Drive, Concord, NH 03302-0095

Also useful

Hillsborough County Board of Commissioners

Countywide governing board; oversees corrections, the nursing home, human resources and county property, not building, zoning or land-use permitting, which sit entirely with each city or town

(603) 627-5602

329 Mast Road, Suite 120, Goffstown, NH 03045

Also useful

Hillsborough County Cities & Towns Directory

Lists every city and town Hillsborough County serves, the starting point for finding your parcel's own building and zoning office

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

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

Yes, for work covered by New Hampshire's building law. Buildings and structures constructed in Hillsborough County must comply with the state building and fire codes, and the person responsible for covered construction, alteration, renovation, repair, removal or demolition must obtain a permit before work begins12. Hillsborough County does not run the permit counter; permitting is municipal, and a city or town with an enforcement mechanism uses its locally adopted process52. The separate state permit system excludes one- and two-family dwellings in municipalities without a local enforcement mechanism, so ask the parcel's city or town how the statewide permit requirement is administered for your project10.

Who issues building permits in Hillsborough County, and how do you reach them?

There is no single Hillsborough County permit office; start with the city or town where the parcel lies because building permits follow the locally adopted process where the municipality has an enforcement mechanism52. Manchester's Building Division handles building-code administration, permit approval, field inspections and zoning enforcement; reach it at (603) 624-6450 or [email protected], at One City Hall Plaza, West Wing11. For another municipality, use Hillsborough County's Cities & Towns Directory to find the correct local government12. A building official must act on a completed ordinary application within 30 days; the deadline is 60 days for nonresidential applications or residential applications covering more than 10 dwelling units13. The county commissioners oversee county property and several county departments, not the municipal permit process14.

Does Hillsborough County have zoning?

Not at the county level — Hillsborough County itself doesn't zone land, because zoning in New Hampshire is a town and city power, not a county one3. Manchester is the clearest example: it administers its own Zoning Ordinance, covering everything from setbacks to what can be built where inside city limits113. Every other city and town in the county adopts, or doesn't adopt, its own zoning independently, so the rules on lot size, setbacks, RVs and accessory dwellings can differ from one town line to the next; check with your specific town before you buy3. If you plan to subdivide, New Hampshire law lets a town's planning board regulate subdivisions once the town authorizes it by ordinance or resolution, so that's also a town-level question, not a county one15.

How do septic permits work in Hillsborough County?

Septic systems are the one piece of this that doesn't change town to town: New Hampshire's Department of Environmental Services reviews and permits septic systems statewide, the same in every Hillsborough County city or town4. DES reviews your design plans and, once approved (and once your local municipality approves too, if it requires that), issues an Approval for Septic System Construction; you need both a construction approval and a separate approval for operation before you can use the system16. An approval for construction is also required before converting a structure from seasonal to full-time occupancy, or before increasing the load on an existing system — a detail that matters if you're buying a former camp or cottage to live in year-round16. NHDES also allows a homeowner to install a septic system for their own primary home without hiring a permitted installer, though it's worth confirming the current paperwork directly with DES6.

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

Mostly no, not year-round without more: New Hampshire treats an RV as allowed for temporary recreational occupancy at a licensed campground, not as a permanent residence, and a year-round site has to meet the same construction standard as a single-family house7. For occasional use on your own land, state law allows a landowner to place an RV for up to 7 days in a calendar year without a campground permit, as long as a statement of compliance is filed with the town's governing body within 7 days before use7. A tiny home is treated like any other dwelling and falls under whichever city or town's zoning and building rules apply to your parcel, which the county itself has no say over3. If you're planning to go off-grid on sanitation, a composting or incinerator toilet needs no DES approval as long as the structure has neither internal plumbing nor a supplied water service; add either one and a full septic approval is required even if the toilet itself stays disconnected8.

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

  1. Identify the parcel's city or town through Hillsborough County's directory, then ask that municipality about zoning and its permit process123.
  2. Submit the completed building application required by the local building official before covered work starts; the permit must comply with the state building code and the locally adopted process113.
  3. Allow up to 30 days for a decision on an ordinary completed application, or 60 days for a nonresidential application or a residential application covering more than 10 dwelling units13.
  4. If the property is not on public sewer, obtain septic construction approval from NH DES before building and operation approval before using the system164.
  5. If a public sewer is within 100 feet, plan to connect unless a valid local waiver or other exception applies9.
  6. Request required inspections before permitted work is concealed and complete any applicable certificate-of-occupancy process before moving in1718.

What to check before you buy land in Hillsborough County

Check which city or town the parcel sits in first, since that determines whether you need a building permit at all, and what the zoning allows — Hillsborough County itself sets none of it35. Check the soil before counting on a standard septic system: only about 7% of Hillsborough County's soils rate free of severe limitations for a conventional drain field, so budget for a site evaluation and the likelihood of an engineered system19. Check whether a public sewer runs within 100 feet of where you'd build, since state law requires connecting to it instead of installing a new septic system in that case9. If you're buying a seasonal camp or cottage to convert into a full-time home, budget for a new septic construction approval, since converting from seasonal to full-time occupancy triggers one16. Hillsborough is a wooded, hilly county — about 88% forested and 74% at a gentle slope of 15% or less — with a typical home value near $531,092, a median property tax bill around $6,791 a year, and typical home insurance near $1,355 a year2021222324. If you're buying farmland, county farmland has run about $10,594 an acre25.

Watch-outs

  • Covered construction must meet New Hampshire's building and fire codes and obtain a permit, but the administering office and process depend on the municipality12.
  • New Hampshire's campground rule allows only occasional RV use on your own land, up to 7 days a year with a filed statement of compliance; it doesn't allow year-round RV living7.
  • Hillsborough County's Board of Commissioners has no zoning or building authority — don't contact the county expecting a building or zoning answer; call your city or town instead143.

Sources

  1. RSA 155-A:2 State Building Code, quoted and re-checked
  2. RSA 155-A:4 Permit Required, quoted and re-checked
  3. City of Manchester Zoning Ordinance (2026 county census)
  4. NH Department of Environmental Services - Septic Systems (2026 county census)
  5. City of Manchester Building Department FAQs (2026 county census)
  6. NH Department of Environmental Services - Septic Systems (2026 county census)
  7. Chapter 216-I Recreational Campgrounds and Camping Parks (New Hampshire statewide rule), quoted and re-checked
  8. Env-Wq 1000 Subdivisions and Individual Sewage Disposal Systems (New Hampshire statewide rule), quoted and re-checked
  9. RSA 147:8 Toilets; Drains (New Hampshire statewide rule), quoted and re-checked
  10. Chapter 155-A New Hampshire Building Code (New Hampshire statewide rule), quoted and re-checked
  11. City of Manchester Planning and Community Development — Building Division (manchesternh.gov)
  12. Hillsborough County Cities & Towns Directory (hcnh.org)
  13. RSA 155-A:4 Permit Required, quoted and re-checked
  14. Hillsborough County Board of Commissioners (hcnh.org)
  15. RSA 674:35 — Power to Regulate Subdivisions (New Hampshire statewide rule), quoted and re-checked
  16. New Hampshire Department of Environmental Services — Subsurface Systems Bureau (des.nh.gov)
  17. Saf-C 8100 State Building Permit System (New Hampshire statewide rule), quoted and re-checked
  18. Saf-C 8100 State Building Permit System (New Hampshire statewide rule), quoted and re-checked
  19. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  20. Wooded share of land: Bolthole Index county data
  21. Share of land at 15% slope or less: Bolthole Index county data
  22. Typical home value (Zillow): Bolthole Index county data
  23. Median property tax bill: Bolthole Index county data
  24. Typical home insurance premium: Bolthole Index county data
  25. Farmland value per acre (USDA census): Bolthole Index county data

Written September 29, 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.

Found land here? Start a Property Hunt →

County locator

Hillsborough County in New Hampshire

68
County map
Hillsborough County highlighted among the New Hampshire counties · colored by Index score

How Hillsborough County scores

Seclusion41100% ev.
Self-Sufficiency70100% ev.
Admin Boringness44100% ev.
Durability76100% ev.
Property Autonomy78100% ev.
Carry Cost46100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$531kTypical home
1.8%Property tax
$10,594Land / acre
47.7"Annual rain
6.5% of yrsSevere drought
0.7 / yr (+0.7)Mid-century 100°F days
11.1 daysMid-century dry spell
2.01" (+8.5%)Mid-century 1-day rain
1.4×Wildfire change factor
100%Forward climate coverage
$1,355Home insurance / yr
0.9% / yrInsurance growth
0.9%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
29,894People within 30 min
6,258,050People within 2 hr
217,753Radius comparison (15 mi)
487.6People / sq mi
1.2%Federal land
74.1%Land at 15% slope or less
6.8%Septic soil without severe limits
37,075 acWorkable land screen
87.8%Wooded land
73.4 tonsBiomass / forest ac
47°FAvg temp

Scout Hillsborough County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Hillsborough County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Answers from the rulebook for Hillsborough County

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

Hillsborough County rules

  • County-wide zoningPresent

    Zoning is administered at the town/city level (counties do not zone in NH); the City of Manchester enforces a Zoning Ordinance.

    City of Manchester Zoning Ordinance ↗Scouted from the county site, not yet independently re-checked

  • Owner-builder exemptionAvailable

    NHDES exempts homeowners installing a septic system for their own primary domicile from the requirement to use a permitted installer, a state owner-builder allowance.

    NH Department of Environmental Services - Septic Systems ↗Scouted from the county site, not yet independently re-checked

New Hampshire rules that apply here

  • Building permitRequired

    Construction, alteration, renovation, repair, removal, or demolition governed by RSA 155-A:2 in Hillsborough County.

    • Before starting covered work, the responsible person must obtain a permit.
    • In municipalities with an enforcement mechanism, the permit conforms to the locally adopted process.
    • State-owned, community-college-owned, and university-owned buildings obtain permits from the state fire marshal.
    • Applications must generally be approved or denied within 30 days, or within 60 days for nonresidential applications or residential applications encompassing more than 10 dwelling units.
    “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
    One more reviewed finding on this topic
    • Required — Construction and renovation subject to New Hampshire's state building code, administered through the state building permit system where the municipality has not adopted a local enforcement mechanism, and buildings owned by the State, the community college system, or the university system.
      “Before starting work as described in RSA 155-A:2, I, the person responsible for such construction shall obtain a permit.”
  • Building code adoptedAdopted

    Buildings and structures constructed in New Hampshire, including Hillsborough County.

    • The code edition in effect when the permit application is received remains in effect for the duration of the permitted work.
    • A six-month concurrency period applies after the effective date of a newly adopted code.
    “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.”
  • 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.”
  • 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.”
  • Septic permitRequired

    Construction of a building from which sewage or other wastes will discharge, or construction of a sewage or waste disposal system, statewide in New Hampshire.

    • Prior DES approval of plans and specifications is required before construction.
    • Locally approved plans must also be submitted where required by the local planning board or other local approving body.
    • A system may not be covered or placed in operation without final inspection and approval by an authorized DES agent.
    • The statute contains exemptions and permit-by-rule provisions elsewhere, including RSA 485-A:33.
    “No person shall construct any building from which sewage or other wastes will discharge or construct a sewage or waste disposal system without prior approval of the plans and specifications of the sewage or waste disposal system by the department.”
  • Septic inspectionRequired

    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.”
  • Off-grid sanitationLimited

    Composting or incinerator toilets in New Hampshire structures.

    • Department approval is not required where the structure has neither internal plumbing nor supplied water service.
    • If the structure has internal plumbing and water service from a drilled well, internal or external storage tank, or municipal water system, an ISDS with DES operational approval is required even if the toilet is not connected to it.
    • Toilet waste disposal must comply with applicable state rules and local law.
    “Composting toilets and incinerator toilets in structures that do not have internal plumbing and that do not have a supplied water service to the building shall not require approval by the department.”
  • Well permitLimited

    Private 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.”
  • 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 process applicable in Hillsborough County, administered locally where a municipality has an enforcement mechanism.
      “Upon the submission of a completed application, the building official shall act to approve or deny a building permit within 30 days; provided, however, that nonresidential applications or residential applications encompassing more than 10 dwelling units shall be approved or denied within 60 days.”
  • Campground & park staysTemporary only (with conditions)

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

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

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

    “intended for temporary occupancy for recreational dwelling purposes only, and not for permanent year-round residency”
  • county building authorityLimited

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

    • The county must be a county in which there are located unincorporated towns or unorganized places.
    • The building must be erected on leased land located within an unincorporated town or unorganized place.
    • The county planning board must require the building permit under RSA 674:41(IV).
    • The county must, by resolution, authorize the planning board to issue building permits under this paragraph.
    • The permit is required regardless of the building's proximity to any street or highway.
    • Separately, RSA 155-A:4(I) requires the person responsible for covered construction to obtain a permit before starting work, and RSA 155-A:4(V) bars issuance of a building or occupancy permit for construction, remodeling, or maintenance that does not comply with applicable zoning ordinances, building codes, or planning-board regulations.
    • The state building code applies statewide, while RSA 155-A:3 describes local enforcement mechanisms as municipal and reserves permit and fee administrative amendments to municipalities.
    “every building which is erected on leased land [...] to have a building permit.”

Still unanswered

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

  • Minimum dwelling size — Minimum dwelling size across Hillsborough County.
  • Minimum lot size — Minimum lot size across Hillsborough County.
  • Setbacks — Setbacks across Hillsborough County.
  • Lot coverage — Lot coverage across Hillsborough County.
  • Building height — Building height across Hillsborough County.
7 more unanswered
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • 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 Hillsborough County, New Hampshire

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

Hillsborough County scores 68/100 on the Bolthole Index, a strong county profile. Its strengths: a stronger property-autonomy legal backdrop and 30 operating mines. Watch-outs: about 29,894 people within a 30-minute drive.

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

Hillsborough County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by New Hampshire Department of Environmental Services, Subsurface Systems Bureau. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

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

Land in Hillsborough County runs about $10,594 per acre, based on the latest county data.

What is the water situation in Hillsborough County?

Hillsborough County gets about 47.7" of rain a year, with severe drought in roughly 6.5% of years.

How remote is Hillsborough County?

A representative private-land location has about 29,894 people within a 30-minute drive and 6,258,050 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 Hillsborough 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.

How Hillsborough compares in New Hampshire

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