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

Town of Ossipee’s own rules

• Building permitRequired

  Placement, commencement of construction, or modification of structures within the Town of Ossipee.

  • Exception: detached accessory structures of 120 square feet or less and maximum height of 12 feet.
  • Exception: fences 7 feet and under.
  • Exception: general repairs not involving structural repairs or changes.
  • Permits are valid one year and may be extended at the zoning officer's discretion for one additional year only.
  • A permit may be revoked if not acted upon within 180 days, or if unsafe or in violation of the state building code.
  • No new building permit shall issue where there is a known zoning violation.

  detached accessory-structure exemption area: <= 120 square feet (Maximum height must be 12 feet.) · fence exemption height: <= 7 feet · permit validity: 1 year (One additional year only may be granted at zoning officer discretion.)

  “The issuance of a permit by the Town Authority (Zoning Enforcement Officer or Building Inspector) is required prior to the placement, commencement of construction or modification of any structure within the Town of Ossipee except for detached accessory structures of 120 Sq ft or less, and a maximum height of 12 ft, fences 7ft and under, general repairs that do not involve structural repairs or changes.”

• InspectionsLimited

  Inspections under the Ossipee Zoning Ordinance within town limits.

  • Inspections are made as appropriate to ensure conformity with the ordinance.

  “The Board of Selectmen or its Zoning Enforcement Officer shall make inspections, as appropriate to ensure conformity with the provisions of this Ordinance.”

• Local zoningPresent (with conditions)

  Land within the Town of Ossipee, New Hampshire.

  • The ordinance was revised through March 10, 2026.

  “The Town of Ossipee is divided into multiple Zoning Districts, hereinafter referred to as “Districts”.”

• Zoning districtsPublished (with conditions)

  Zoning districts in the Town of Ossipee.

  • The ordinance divides the town into multiple zoning districts.

  “The Town of Ossipee is divided into multiple Zoning Districts, hereinafter referred to as “Districts”.”

• Living in an RVLimited

  Recreational vehicles on private property that is not a recreational camping park within Ossipee town limits.

  • A private campsite is allowed May 1 through October 31.
  • More than 14 consecutive days requires a Building Department permit and adequate water, sewerage, and solid-waste safeguards.
  • A campsite may not be used as a permanent residence.
  • Only two recreational vehicles or tents are allowed per campsite beyond 14 consecutive days.

  season: May 1 to October 31 (One private campsite per parcel.) · permit threshold: > 14 consecutive days (Building Department permit required.)

  “One private campsite per parcel of land is allowed from May1 to October 31 each year. [...] If a campsite is occupied or planned to be occupied for more than fourteen (14) consecutive days, the property owner shall obtain a permit from the Building Department [...] No campsite shall be used as a permanent residence.”

• Accessory dwellingsLimited

  Accessory dwelling units where permitted within Ossipee town limits.

  • Maximum one ADU per property, attached or detached.
  • An ADU may be permitted where two primary dwelling units exist.
  • Maximum ADU area is 1,200 square feet.
  • One dedicated off-street parking space is required per ADU.
  • A property owner must occupy one of the two dwelling units.
  • Water and sewage provisions must comply with RSA 485-A:38.

  maximum ADUs per property: <= 1 ADU · maximum ADU area: <= 1200 square feet · dedicated off-street parking: >= 1 space per ADU

  “A maximum of one (1) Accessory Dwelling Unit (“ADU”) per property is permitted either attached or detached. An ADU shall be permitted on a property where two primary dwelling units exist.”

• Off-grid sanitationLimited

  Private campsites with recreational vehicles or tents within Ossipee town limits.

  • Solid waste and sewerage must be disposed of lawfully.
  • A recreational vehicle connected to water must be connected to a sewage-disposal system approved by NHDES, or proof of disposal at a state-licensed facility must be available on site and produced upon request.

  “Solid waste and sewerage shall be disposed of in a lawful manner. A recreational vehicle connected to a water supply shall be hooked to a sewage disposal system approved by the NH Department of Environmental Services or proper proof of disposal of septic waste at a State licensed facility must be available on site and presented to the Code Enforcement Officer upon request.”

• Shed and accessory-building permit exemptionConditional

  Detached accessory structures within Ossipee town limits.

  • The permit exemption applies only to detached accessory structures no larger than 120 square feet and no higher than 12 feet.

  maximum exempt accessory-structure area: <= 120 square feet (Detached structure only; maximum height 12 feet.) · maximum exempt accessory-structure height: <= 12 feet (Detached structure only; maximum area 120 square feet.)

  “The issuance of a permit by the Town Authority (Zoning Enforcement Officer or Building Inspector) is required prior to the placement, commencement of construction or modification of any structure within the Town of Ossipee except for detached accessory structures of 120 Sq ft or less, and a maximum height of 12 ft, fences 7ft and under, general repairs that do not involve structural repairs or changes.”

• Building in a floodplainLimited

  Development in special flood hazard areas within Ossipee town limits.

  • For Zones A and AE, new or substantially improved residential structures must have the lowest floor, including basement, elevated to or above the 100-year flood elevation.
  • Nonresidential structures must meet the stated elevation or floodproofing alternatives.
  • The floodplain ordinance overlays and supplements Ossipee zoning requirements.

  “all new construction or substantial improvement of residential structures have the lowest floor (including basement) elevated to or above the one hundred (100) year flood elevation;”

Rules another office applies inside Town of Ossipee

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

• Lot coverageSpecified

  Residential District within the Town of Ossipee.

  • Table 2 footnote (*4) applies; its text was not included in the opened table excerpt.
  • The ordinance allows a maximum-coverage increase of up to 25 percent of the stated coverage when adequate on-site storm-water drainage is designed by a qualified professional engineer; the increase may not reduce setback areas or buffer strips.

  maximum lot coverage: <= 25 percent (Residential District; Table 2 footnote (*4) applies.)

  “The maximum lot coverage in Table 2 may be increased by not more than twenty-five percent (25%) of said coverage when adequate systems for on-site storm water drainage are designed by a qualified professional engineer. Such increase shall not reduce the setback areas or buffer strips.”

Still unanswered

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

• Owner-builder exemption — Owner-built construction within Ossipee town limits.
• Building code adopted — Building-code adoption for construction within Ossipee town limits.
• Minimum dwelling size — Principal single-family dwellings within Ossipee town limits.
• Building height — Buildings within Ossipee town limits.
• Tiny homes — Tiny homes used as dwellings within Ossipee town limits.

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.