Zoning, building permits and septic rules in Town of Candia, New Hampshire
Town of Candia is a town in Rockingham County, New Hampshire. Town of Candia adopts its own zoning, so inside its limits Town of Candia’s rules apply, not the county’s. 16 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Rockingham County page.
Answers from the rulebook for Town of Candia
Town of Candia’s own rules
Building permitRequired
Erection, addition, alteration, or excavation of a building or structure inside Candia town.
The Building Inspector must issue the permit and state zoning-ordinance compliance before work starts.
A permit is not issued for construction or use violating the ordinance except upon written Board of Adjustment order.
Valid permits must be exercised within 12 months; the ordinance requires a renewal permit if not exercised.
permit validity: 12 months (A renewal permit must be applied for if a valid permit is not exercised.)
“no excavation shall be started until a Building Permit therefore shall have been issued”
InspectionsRequired
Permitted building, demolition, and development projects inside Candia town.
Applicants must give the Building Inspector at least 48 hours' notice to schedule inspections.
New buildings within 55 feet of a property line must have foundation certification before drains and damp-proofing inspection.
inspection scheduling notice: >= 48 hours
“Perform on-site inspections of building, demolition, and development projects during and upon completion”
Certificate of occupancyRequired
Occupation, use, or change in use of land or a building inside Candia town.
The certificate must be applied for with the building-permit application.
It is issued after inspection and the Building Inspector finds that all ordinance provisions are met.
A written Board of Adjustment order is the stated exception to denial for construction or use violating the ordinance.
“No land or building shall be occupied, used, or changed in use until a Certificate of Occupancy shall have been issued”
Local zoningPresent (with conditions)
Land inside Candia town, New Hampshire.
Construction and land use must conform to the ordinance unless a valid non-conforming use applies.
“No building or other structure shall be constructed or altered, nor land used except in conformity with this Ordinance”
Zoning districtsPublished (with conditions)
Zoning districts inside Candia town.
The zoning and wetlands-conservation district maps are part of the ordinance and are kept on file with the Town Clerk.
published zoning districts: R, C, MX, LI-1, LI-2 (The ordinance also contains overlay-district controls.)
“The Town of Candia, New Hampshire, is hereby divided into six (6) Zoning Districts”
Minimum dwelling sizeSpecified
Single-family detached and attached duplex dwellings inside Candia town.
The 800-square-foot standard applies to one-story dwellings; the two-story standard is 672 square feet on the first floor.
“800 square feet of floor area per dwelling unit if one story or 672 square feet on the first floor if two stories.”
Living in an RVProhibited
Use of major recreational equipment, including travel trailers, for living, sleeping, or housekeeping in any Candia zoning district.
The ban applies to living, sleeping, or housekeeping use; it does not itself address storage or parking except that such equipment may not be parked or stored in the Residential District front-yard area.
“shall not be used for living, sleeping, or housekeeping purposes in any district within the Town of Candia”
Manufactured homesLimited
Manufactured housing used as a dwelling inside Candia town.
Temporary use after an unforeseen disaster is limited to six months, renewable for up to six additional months while construction is actively pursued.
Temporary use while building a new dwelling requires a Board of Adjustment special exception, approved driveway and building permits, and on-site water and septage disposal facilities.
Manufactured-housing subdivisions are restricted to specified Residential District tax-map lots; manufactured-housing parks are restricted to specified locations.
temporary certificate period: <= 6 months (May be extended up to six more months with good cause shown.)
“The use of land for the accommodations of a trailer or trailers and/or a mobile home or mobile homes is prohibited except by permit”
Accessory dwellingsAllowed (with conditions)
Accessory dwelling units associated with single-family dwellings in Candia Residential or Mixed-Use districts.
The first ADU is permitted under Section 5.02; a second requires a special exception.
Maximum two ADUs, with no more than one detached, per single-family dwelling.
Each ADU has a two-bedroom maximum, must have adequate water and state-compliant sewer disposal, must meet existing setbacks, and either the primary or ADU must be owner occupied.
An ADU is limited to 850 square feet and 75% of the primary dwelling's square footage.
maximum ADU size: <= 850 square feet (May not exceed 75% of the primary dwelling's square footage.)
“Any single-family dwelling unit in the residential or mixed-use districts may be converted, modified, or constructed to provide for a maximum of two accessory dwelling units.”
Subdividing landRegulated (with conditions)
Subdivision applications inside Candia town.
The Planning Board's authority remains subject to the Board's regulations and RSA 674:36, II(a).
The ordinance preserves Planning Board authority over subdivisions and site plans, including declaring development premature or scattered.
“the existing authority of the Planning board over subdivisions and site plans”
Driveway accessRequired
Driveway entrances and other access to public ways inside Candia town.
The entrance must comply with RSA 236:13 and be inspected by the Road Agent.
Access must be on the lot boundary used for lot width and frontage unless the Planning Board allows another boundary after a showing of public-safety concern.
“The entrance of driveways and other accesses to the public way shall be done in accordance with RSA 236:13 and shall be inspected by the Road Agent.”
Building in a floodplainLimited
Buildings, fill, and other obstructions in a Candia floodway.
The prohibition applies where the Town determines the encroachment would adversely affect flood-carrying capacity or flood levels, or create a hazard to life and property.
The Town may consult the U.S. Army Corps of Engineers or other experts in making that determination.
“No building, fill or other obstruction shall be permitted in any floodway where it is determined by the Town that such encroachment will adversely affect the flood carrying capacity”
Short-term rentalsLimited
Boarding, rooming, and short-term-rental accommodations inside Candia town.
The ordinance limits accommodations to no more than 184 consecutive days.
They are a special-exception use in the Residential District, permitted by right in Commercial and Mixed-Use districts, and expressly prohibited in Light Industrial districts.
They are subject to Section 17.02.
maximum consecutive accommodation period: <= 184 days (Subject to Section 17.02.)
“Boarding, rooming and short-term rental accommodations not to exceed 184 consecutive days”
Permit processPublished (with conditions)
Building-permit and certificate-of-occupancy applications inside Candia town.
Applications must be in duplicate on Building Inspector forms and include a scaled plot plan with stated information.
Water-supply and sewage-disposal handling must be described in the application and shown on the plot plan.
Upon a completed application, the Inspector acts in 30 days, or 60 days for nonresidential applications or residential applications over 10 dwelling units.
standard decision period: <= 30 days (After submission of a completed application.) · large-residential/nonresidential decision period: <= 60 days (Nonresidential applications or residential applications encompassing more than 10 dwelling units.)
“the building inspector shall act to approve or deny a building permit within 30 days”
Rules another office applies inside Town of Candia
Town of Candia does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Owner-builder exemptionConditional
Installation of a new subsurface waste-disposal system for an owner's own domicile inside Candia town.
The owner must comply with department rules.
The owner or a permitted installer must perform all construction work.
A permitted designer or installer must certify construction conforms to the approved design and department rules.
The owner must affidavit that the property will be their domicile for at least two years after departmental approval to operate.
required owner occupancy: >= 2 years (Starts on the date the system receives departmental approval to operate.)
“shall not be required to obtain an installer's permit as provided in paragraph I”
Building code adoptedAdopted (with conditions)
State Building Code requirements applicable inside Candia town.
Candia states that local jurisdictions may adopt stricter regulations.
The listed codes include New Hampshire amendments.
International Residential Code edition: 2021 (Plus NH amendments)
“2021 International Residential Code (IRC)”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Town of Candia or Rockingham County directly.
Minimum lot size — Principal residential lots inside Candia town.
Lot coverage — Principal single-family residential development inside Candia town.
Building height — Principal single-family residential structures inside Candia town.
Camping on your land — Temporary camping on private land inside Candia town.
Tiny homes — Tiny-home occupancy inside Candia town.
8 more unanswered
Who permits septic
Septic permit
Septic inspection
Off-grid sanitation
Well permit
Mandatory utility hookup
Agricultural exemption
Permit fees
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.
Unanswered questions are usually a sign that Town of Candia publishes no rule on the point, not that none exists. Rockingham County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Town of Candia means bringing your own water and power. The kit we’d start with:
