Bolthole Index

Hillsborough County, New Hampshire

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

Town of New Boston is a town in Hillsborough County, New Hampshire. Town of New Boston adopts its own zoning, so inside its limits Town of New Boston’s rules apply, not the county’s. 12 rules below are quoted from official sources and independently re-checked, most recently on November 7, 2026. Rules for unincorporated land are on the Hillsborough County page.

Answers from the rulebook for Town of New Boston

Town of New Boston’s own rules

  • Building permitRequired

    Construction, alteration, or repairs to dwellings and accessory structures covered by the New Boston Building Code.

    • Ordinary repairs are excluded; the code defines them as nonstructural repairs and lists utility-system work that is not included.
    “A permit shall be obtained before the start of construction, alteration, or repairs, other than ordinary repairs”
  • Building code adoptedPartial

    Detached one- and two-family dwellings of not more than three stories and their accessory structures inside New Boston town.

    • The local code expressly adopts NFPA 13R for new multifamily dwellings, NFPA 70 Article 690 for solar photovoltaic systems, and NFPA 1 Article 11.12 for photovoltaic systems.
    “The Town, by this Ordinance, adopts NFPA 13R, Standard for the Installation of Sprinkler Systems in Multi-Family Dwellings”
  • InspectionsRequired

    Permitted on-site construction covered by the New Boston Building Code.

    • Inspections occur upon notification from the permit holder or agent; work may not proceed beyond an inspection step without written approval.
    “Work shall not proceed on any part of the building or structure beyond the point indicated by the specific inspection step”
  • Local zoningPresent (with conditions)

    Land inside New Boston town, Hillsborough County, New Hampshire.

    • Uses must comply with the district regulations and applicable approval route in the ordinance.
    “The Town of New Boston hereby is divided into the following districts as shown on the official zoning maps:”
  • Zoning districtsPublished (with conditions)

    Land inside New Boston town.

    • The ordinance also establishes Wetlands Conservation and Stream Corridor, Groundwater Resource Conservation, Floodplain, and Steep Slopes Conservation overlay districts.
    “IND Industrial COM Small Scale Planned Commercial R-1 Residential One R-A Residential & Agricultural MHP Manufactured Housing Park”
  • Lot coverageSpecified

    Lots inside New Boston town.

    • Commercial and industrial lots have a separate 70 percent maximum; all principal and accessory buildings, roofed porches, and carports are included.

    maximum building coverage: <= 30 percent of lot size (Commercial and industrial lots are limited to 70 percent.)

    “shall not exceed 30% of the lot size. Building coverage on Commercial and Industrial lots shall not exceed 70% of the lot size.”
  • Building heightSpecified

    Buildings inside New Boston town.

    • The ordinance lists exceptions, including flagpoles, chimneys, spires, silos, towers, lightning rods, and similar superstructures not used for human occupancy.

    maximum building height: <= 35 feet (Except as provided in Section 208.5.)

    “shall not exceed a height of 35 feet except as provided for in this Section.”
  • Camping on your landLimited

    Recreational camping parks inside New Boston town.

    • A recreational camping park must have at least 25 acres and comply with the ordinance's camping-park standards.

    minimum camping park area: >= 25 acres

    “A recreational camping park shall have an area of not less than 25 acres.”
  • Permit feesVariable (with conditions)

    Building permits inside New Boston town.

    • Fees are established by the Selectmen under applicable state and/or local law.
    “Permit fees shall be established by the Selectmen as established by State and/or local applicable law.”
  • Permit processPartial

    Building permits inside New Boston town.

    • Applications use forms furnished by the Building Inspector; plans are required when the Building Inspector requires them.
    “using application forms furnished by the Building Inspector.”

Rules another office applies inside Town of New Boston

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

  • Minimum lot sizeSpecified

    One-family dwellings in New Boston's R-1 Residential One district.

    • The cited table also specifies 150-foot frontage and 50-foot front and 20-foot side and rear yards.

    minimum lot size: >= 1.5 acres (One-family dwelling in R-1.)

    “One family 1.5 ac. 150’ 50’ 20’ 20’”
  • SetbacksSpecified

    One-family dwellings in New Boston's R-1 Residential One district.

    • The ordinance provides exceptions in Section 208 and requires a different measurement for streets with less than a 50-foot right-of-way.

    front yard: >= 50 feet (One-family dwelling in R-1.) · side yard: >= 20 feet (One-family dwelling in R-1.) · rear yard: >= 20 feet (One-family dwelling in R-1.)

    “One family 1.5 ac. 150’ 50’ 20’ 20’”

Still unanswered

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

  • Owner-builder exemption — New Boston town.
  • Certificate of occupancy — New Boston town.
  • Minimum dwelling size — Dwellings inside New Boston town.
  • Living in an RV — Long-term RV occupancy on private land inside New Boston town.
  • Tiny homes — Tiny-home occupancy inside New Boston town.
9 more unanswered
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain

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 New Boston publishes no rule on the point, not that none exists. Hillsborough County’s page lists the county offices to call.

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