Zoning, building permits and septic rules in Town of Lyndeborough, New Hampshire

Town of Lyndeborough’s own rules

• Building permitRequired

  Construction, alteration, demolition, occupancy changes, and code-regulated equipment work inside Lyndeborough town.

  • Ordinary repairs described by the Town do not require a permit.
  • A building under 100 square feet does not require a building permit, though it may require another permit and must meet zoning.

  small-building threshold: < 100 square feet (Building permit not required; other permits may be required.)

  “Building Permits are required for the following: 1. The construction or placement of a dwelling unit of any type (conventional construction, modular, manufactured homes and trailers)”

• Local zoningPresent (with conditions)

  Land inside Lyndeborough town.

  • The ordinance is amended through March 10, 2026.

  “This Zoning Ordinance was originally adopted at a special Town Meeting on April 14, 1959 and recodified by the voters of the Town of Lyndeborough, New Hampshire, by Official Town Meeting Ballot vote on March 10, 1998.”

• Zoning districtsPublished (with conditions)

  Land inside Lyndeborough town.

  • District boundaries and general locations are depicted on the zoning map on file in the Town Office.

  districts: Village (V); Light Industrial (LI); Rural Lands One (RL1); Rural Lands Two (RL2); Rural Lands Three (RL3)

  “a. Village District – V, b. Light Industrial District – LI, c. Rural Lands One – RL1, d. Rural Lands Two – RL2, and e. Rural Lands Three – RL3.”

• Minimum dwelling sizeSpecified

  Dwelling units inside Lyndeborough town.

  • Seasonal dwellings may be less than 600 square feet but are not permanent residences.

  minimum dwelling-unit area: >= 600 square feet (Seasonal dwelling exception.)

  “Dwelling Unit. A single unit providing complete independent living facilities for one or more persons with permanent provisions for living, sleeping, eating, cooking and sanitation with a minimum of 600 square feet on a permanent foundation with a state approved septic system and water supply.”

• Living in an RVProhibited

  Use of a recreational vehicle as a dwelling unit inside Lyndeborough town.

  “A dwelling unit may be constructed on-site, or may be manufactured housing or pre-site built housing. Under no circumstances shall a recreational vehicle be considered a dwelling unit. (3/9/99)”

• Tiny homesLimited

  Dwelling units, including a proposed tiny home intended as a dwelling, inside Lyndeborough town.

  • A dwelling unit must be on a permanent foundation and have state-approved septic and water supply.
  • Seasonal dwellings may be less than 600 square feet but are not permanent residences.

  minimum dwelling-unit area: >= 600 square feet (Seasonal dwelling may be less than 600 square feet and is not a permanent residence.)

  “Dwelling Unit. A single unit providing complete independent living facilities for one or more persons with permanent provisions for living, sleeping, eating, cooking and sanitation with a minimum of 600 square feet on a permanent foundation with a state approved septic system and water supply.”

• Accessory dwellingsAllowed (with conditions)

  Accessory dwelling units in zoning districts that permit single-family dwellings inside Lyndeborough town.

  • One ADU is allowed by right; up to two are allowed by right on lots greater than five acres if their combined area does not exceed 2,000 square feet.
  • Adequate off-street parking, water supply, sewage disposal, building-code compliance, and owner principal-residence status are required.

  maximum number of ADUs: 2 (Lots greater than five acres; combined ADU floor area may not exceed 2,000 square feet.)

  “An Accessory Dwelling Unit shall be allowed as a matter of right by the Building Inspector pursuant to RSA 674:71 and 674:72 in all zoning districts that permit single family dwellings.”

• Who permits septicState (with conditions)

  Sanitary systems inside Lyndeborough town.

  • Town regulations also apply.

  “All sanitary systems shall be constructed and maintained in accordance with the standards set and enforced by the New Hampshire Department of Environmental Services and other Town of Lyndeborough regulations.”

• Subdividing landRegulated (with conditions)

  Subdivision of land inside Lyndeborough town.

  • A minor subdivision is three or fewer lots with no potential for resubdivision and requiring no new road, utilities, or other municipal improvements; procedures may be simplified.

  “the Lyndeborough Planning Board adopts the following regulations governing the subdivision of land in the Town of Lyndeborough, New Hampshire.”

• Driveway accessRequired

  Constructing, replacing, or paving driveways inside Lyndeborough town.

  • Applications are handled by the Department of Public Works.
  • The published regulations remain in effect until replaced.

  “Permits are required for (among other things outlined in the regulations) constructing, replacing or paving driveways. Applications for Driveway Permits are handled by the Department of Public Works.”

• Building in a floodplainRequired

  Development in any special flood hazard area inside Lyndeborough town.

  • New construction and substantial improvements in a special flood hazard area must meet ordinance construction requirements.
  • The ordinance was amended March 12, 2024.

  “All proposed additions, apartments, buildings, barns, structures, dwellings, cabins, or development in any special flood hazard areas shall require a permit.”

• Short-term rentalsLimited

  Short-term rentals inside Lyndeborough town.

  • A resident owner must operate the rental under a conditional-use permit.
  • Off-street parking, septic-load capacity, applicable fire and life-safety requirements, Town regulations, state laws, and licensing requirements apply.

  “A Resident Owner may engage in the business of Short-Term Rentals under a Conditional Use Permit under the following conditions:”

• Permit feesPublished (with conditions)

  Town building and associated permits.

  • Building-permit fees are normally based on project square footage and residential or commercial classification.
  • All other associated permits are $50 each according to the Town FAQ.

  associated permit fee: 50 USD (Building permits are normally calculated by square footage and residential/commercial classification.)

  “Building permit fees are normally determined by the square footage of the project and whether it is Residential or Commercial. All other associated permits are $50.00 each.”

• Permit processPublished (with conditions)

  Town permit applications inside Lyndeborough town.

  • Supporting documents are required as applicable.
  • Trade permits cannot issue until the building permit has issued when a building-permit application exists.

  “Submit the relevant permit application(s) and any supporting documents to Citizens’ Hall, 9 Citizens’ Hall Road.”

Rules another office applies inside Town of Lyndeborough

Town of Lyndeborough does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

• SetbacksDistrict specific (with conditions)

  Village, Light Industrial, RL1, RL2, and RL3 zoning districts inside Lyndeborough town.

  • For lots under five acres, the 50-foot front and 35-foot side and rear setback applies only to RL1.

  Village front-side-rear setback: 35/35/35 feet · LI, RL1, RL2, and RL3 front-side-rear setback: 50/50/50 feet (RL1 lots less than five acres: 50/35/35 feet.)

  “Setbacks (ft) Front 35 50 50 50 50 Side 35 50 50 50 50 Rear 35 50 50 50 50”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Lyndeborough or Hillsborough County directly.

• Owner-builder exemption — Owner-built residential work inside Lyndeborough town.
• Inspections — Building work inside Lyndeborough town.
• Certificate of occupancy — Occupancy of construction inside Lyndeborough town.
• Lot coverage — Lots inside Lyndeborough town.
• Building height — Buildings inside Lyndeborough town.

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.