Bolthole Index

Grafton County, New Hampshire

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

Town of Wentworth is a town in Grafton County, New Hampshire. Town of Wentworth has not adopted its own zoning; the county’s or state’s rules apply inside its limits. Septic permits inside Town of Wentworth come from the county and state together. 12 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Grafton County page.

Answers from the rulebook for Town of Wentworth

Town of Wentworth’s own rules

  • Local zoningAbsent

    Land inside Wentworth town, New Hampshire.

    • Wentworth enforces subdivision regulations and Federal FEMA floodplain regulations despite having no zoning.
    “The Town of Wentworth does not have zoning.”
  • Zoning districtsNot published

    Zoning districts inside Wentworth town.

    • Wentworth subdivision and FEMA floodplain regulations remain applicable.
    “The Town of Wentworth does not have zoning.”
  • Minimum dwelling sizeNone

    Dwellings inside Wentworth town, insofar as town zoning is concerned.

    • Wentworth subdivision and FEMA floodplain regulations remain applicable.
    “The Town of Wentworth does not have zoning.”
  • Minimum lot sizeSpecified

    Newly created lots inside Wentworth town.

    • This applies under subdivision regulations, not zoning.

    minimum newly created lot area: >= 1 acre

    “Subdivision regulations include but are not limited to a requirement for newly created lots to be one acre or larger in size and a limitation of a single dwelling per lot.”
  • SetbacksNone

    Structures inside Wentworth town, insofar as town zoning is concerned.

    • Wentworth subdivision and FEMA floodplain regulations remain applicable.
    “The Town of Wentworth does not have zoning.”
  • Lot coverageNone

    Lots inside Wentworth town, insofar as town zoning is concerned.

    • Wentworth subdivision and FEMA floodplain regulations remain applicable.
    “The Town of Wentworth does not have zoning.”
  • Building heightNone

    Buildings inside Wentworth town, insofar as town zoning is concerned.

    • Wentworth subdivision and FEMA floodplain regulations remain applicable.
    “The Town of Wentworth does not have zoning.”
  • Accessory dwellingsLimited

    Detached Accessory Dwelling Units inside Wentworth town.

    • Prior approval from the Planning Board is required to avoid subdividing for the Detached Accessory Dwelling Unit.
    “An exception for Detached Accessory Dwelling Units exists, but requires prior approval from the Planning Board to avoid the requirement to subdivide.”
  • Permit processPartial

    Subdivision, Detached Accessory Dwelling Unit review, driveway, and septic processes inside Wentworth town.

    • Subdivision and Detached Accessory Dwelling Unit review applications are available at the Town Office Building during normal business hours and meetings.
    • Driveway applications are available at the Town Office Building during normal business hours and Select Board meetings.
    • The Planning Board cannot support a driveway-permit application.
    “Applications for driveway permits are available at the Town Office Building during normal business hours and during Select Board meetings.”

Rules another office applies inside Town of Wentworth

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

  • Who permits septicMixed (with conditions)

    Septic-system design and installation for occupied dwellings inside Wentworth town.

    • The septic designer must be licensed by New Hampshire.
    • Design plans should be submitted to the Wentworth Select Board for review.
    • The Planning Board does not approve septic designs, but may require review before subdivision or Detached Accessory Dwelling Unit approval.
    • Board-approved plans should then be submitted to NHDES for approval and certification of installation.
    “Design plans for a septic system for any occupied dwelling should be submitted to the Wentworth Select Board for review.”
  • Septic permitLimited

    Septic-system installation for occupied dwellings inside Wentworth town.

    • A New Hampshire-licensed septic designer is required.
    • Plans should be reviewed by the Wentworth Select Board and then submitted to NHDES for approval and certification of installation.
    • Planning Board review may be required before subdivision or Detached Accessory Dwelling Unit approval.
    “Board approved plans should then be submitted to the State of New Hampshire, Department of Environmental Services, Concord, NH. for their stamp of approval and certification of installation.”
  • Off-grid sanitationLimited

    On-site sanitation serving occupied dwellings inside Wentworth town.

    • A New Hampshire-licensed septic designer is required.
    • Design plans should be submitted to the Select Board and then to NHDES for approval and certification of installation.
    “All septic installations require the septic designer to be licensed by the State of New Hampshire.”

Still unanswered

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

  • Building permit — General residential construction inside Wentworth town.
  • Owner-builder exemption — Owner-built residences inside Wentworth town.
  • Building code adopted — Building construction inside Wentworth town.
  • Inspections — Building construction inside Wentworth town.
  • Certificate of occupancy — Residential occupancy inside Wentworth town.
6 more unanswered
  • Septic inspection
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Short-term rentals
  • 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 Wentworth publishes no rule on the point, not that none exists. Grafton County’s page lists the county offices to call.

Off-grid gear

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

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