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

Town of Fitzwilliam’s own rules

• Building permitRequired

  New construction, additions, and renovations to buildings or building systems inside Fitzwilliam town.

  • The Town identifies additional covered work, including relocation or rebuilding, occupancy changes, swimming pools, additional plumbing or sewage lines or fixtures, seasonal-to-year-round conversions, manufactured-home installation, and major structural repairs.
  • Consult the Building Inspector or Selectmen's Office if uncertain whether a permit is needed.

  “building permits are required for all new construction, additions and renovations to any building or building system, both interior and exterior.”

• Building code adoptedAdopted (with conditions)

  Buildings and structures within the corporate limits of Fitzwilliam town.

  • The State Building Code is enforced through the Town's Code Enforcement Officer.
  • parameters: local climatic and geographic design criteria also apply.

  “pursuant to rsa 155-a:3, the town of fitzwilliam adopts the enforcement of the state building code as set forth in rsa chapter 155-a; creates the position of building inspector, hereinafter known as the code enforcement officer to enforce the state building code;”

• InspectionsRequired

  Work authorized by building permits inside Fitzwilliam town.

  • Inspection is conducted by the Code Enforcement Officer as part of enforcement of the State Building Code.

  “the town requires progress inspections to include foundation, rough and final building.”

• Certificate of occupancyRequired

  A newly constructed building, an addition to an existing building, or a building changed to a new use inside Fitzwilliam town.

  • Existing legal uses need not obtain a certificate until the structure's use is changed or expanded.
  • Before issuance, the Code Enforcement Officer requires completed Code-compliant work, a septic system meeting NHDES Subsurface Bureau and local requirements, Road Agent approval of the driveway entrance on town roads, and Fire Department review.

  “no newly constructed building or addition to an existing building may be used or any new building changed in use until a certificate of occupancy is issued by the board of selectmen and their duly authorized agent.”

• Local zoningPresent (with conditions)

  Land inside Fitzwilliam town limits.

  • The Town's Land Use Bylaw is adopted under RSA 672-677.

  “the town of fitzwilliam land use bylaw is adopted under rsa 672-677.”

• Zoning districtsPublished (with conditions)

  Land inside Fitzwilliam town limits.

  • The Town publishes a zoning district map and tables of dimensional regulations and principal uses.

  “zoning ordinance (updated 2026) zoning district map (updated 2024) tables of dimensional regulations and principal uses (updated 2024)”

• Living in an RVTemporary only (with conditions)

  Recreational vehicles used as dwellings on private land inside Fitzwilliam town.

  • Allowed in a campground or recreational-vehicle camping park under RSA 216-I; during construction or rehabilitation of a permanent structure with a valid unexpired building permit for one year; on private lots during May 1 through October 30; or outside camping season for a total of 21 days.
  • Each temporary dwelling or lot must provide adequate water and septic, satisfy district setbacks, provide sufficient off-street parking, and avoid nuisance.

  private-lot camping season: May 1 to October 30 · outside-camping-season use: 21 days (Total use outside camping season.)

  “recreational vehicles may not be inhabited on a temporary basis, unless it is: a. located in a campground or recreational vehicle camping park, pursuant rsa 216-i; b. used during construction or rehabilitation of any permanent structure, which has a valid unexpired building permit issued by the board of selectmen for a period of one year; c. used during camping season on private lots between may 1 and october 30; or d. used outside of camping season for a total of 21 days.”

• Camping on your landLimited

  Camping in temporary dwellings on private lots inside Fitzwilliam town.

  • Private-lot use is limited to May 1 through October 30, or 21 total days outside camping season.
  • Temporary dwellings must have adequate water and septic, meet applicable setbacks, provide sufficient off-street parking, and not create a nuisance.

  camping season: May 1 to October 30 (Private lots.) · outside-camping-season use: 21 days (Total use outside camping season.)

  “each temporary dwelling and/or lot shall: a. b. c. d. have adequate provision for water and septic; meet all applicable setback requirements for the district; have sufficient off-street parking for vehicles used by the occupants and any visitors; and not create a nuisance to surrounding property owners.”

• Manufactured homesLimited

  Manufactured homes inside Fitzwilliam town.

  • A single-family dwelling, including manufactured housing, is listed as permitted in R-1, Rural, Village Center Business, and General Business districts, but not Light Industrial or General Industrial districts.
  • A manufactured home not on a permanent foundation is allowed only while a permanent dwelling is being built under a valid unexpired building permit, for one year.

  temporary manufactured-home period: 1 year (While a permanent dwelling is being constructed and has a valid unexpired building permit.)

  “manufactured homes not on permanent foundations are allowed while a permanent dwelling is being constructed on the property and has a valid unexpired building permit issued by the board of selectmen for a period of one year.”

• Accessory dwellingsAllowed (with conditions)

  Accessory dwelling units on parcels with a single-family dwelling inside Fitzwilliam town.

  • Only one ADU is allowed per principal single-family dwelling; the owner must reside in either unit; a separate house number is required; maximum gross floor area is 950 square feet; maximum is two bedrooms; required access, parking, septic, and Town-ordinance conditions apply.
  • An ADU may not be used as a short-term rental, and separate condominium conveyance is prohibited.

  maximum ADU gross floor area: <= 950 square feet · maximum ADU bedrooms: <= 2 bedrooms

  “the adu, as secondary and incidental to the principal dwelling unit, may not exceed nine hundred fifty (950) square feet in gross floor area. g. the adu may not have more than two bedrooms.”

• Subdividing landRegulated (with conditions)

  Subdivision of land inside Fitzwilliam town.

  • The Town publishes separate fees for minor subdivisions of 2-3 lots and major subdivisions of 4 or more lots.

  minor subdivision fee: 250 USD (First 2 lots; $100 for the third lot.) · major subdivision fee: 500 USD (Plus $250 per lot; 4 or more lots.)

  “minor subdivision (2-3 lots) major subdivision (4 or more lots) boundary line adjustment $250 for the first 2, $100 for the 3 rd lot $500 + $250 per lot”

• Driveway accessLimited

  Driveway entrances on town roads serving work requiring a certificate of occupancy inside Fitzwilliam town.

  • This condition is specifically stated for issuance of a certificate of occupancy and town roads.

  “the driveway entrance has been approved by the road agent on town roads”

• Short-term rentalsLimited

  Short-term rentals inside Fitzwilliam town.

  • A conditional use permit and Planning Board application process apply.
  • The use is allowed only in zoning districts where residential use is allowed; occupancy is capped at two persons per bedroom; adequate parking, water supply, septic disposal, compliance with RSA 48-A:14, and a joint Fire Chief/Health Officer inspection before approval are required.
  • Short-term rentals are prohibited on lots containing an ADU, and no RV, travel trailer, or temporary shelter may be used for living or sleeping on the premises.

  maximum occupancy: number of bedrooms multiplied by two persons

  “is considered a commercial accessory use, permitted by a conditional use permit pursuant to rsa 674:21, and subject to the procedures spelled out in the planning board application process.”

• Permit feesPublished (with conditions)

  Building permits inside Fitzwilliam town.

  • A permit issued after work begins carries a penalty of two times the permit fee plus $50 for each day after notice when no application is submitted.

  residential administrative fee: 50 USD · new-home fee: per 0.3 USD per square foot (Basement and each listed floor.)

  “penalty for permit issued after work has begun and for each day no permit application is submitted: 2 x permit fee + $50 each day for when applicant has been noticed.”

• Permit processPublished (with conditions)

  Building-permit applications inside Fitzwilliam town.

  • The authority to issue permits resides with the Board of Selectmen and Building Inspector.
  • Permit applications are available through the Town and applicants may contact the Selectmen's Office for assistance.

  “the authority to issue building permit resides with the board of selectmen and the building inspector”

Rules another office applies inside Town of Fitzwilliam

Town of Fitzwilliam 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

  Rural District inside Fitzwilliam town.

  • At least 80,000 square feet must consist of soils rated moderately drained or better by the Cheshire County Conservation District.
  • Wetlands, excluding bodies of water, may count if 75 percent of the minimum lot size is contiguous non-wetlands adequate for required utilities, including wellhead and on-site septic tanks and leach fields.
  • See § 127-19 for special provisions and exceptions.

  minimum lot area: >= 120000 square feet (Subject to Rural District soil and contiguous non-wetland conditions.) · minimum lot frontage: >= 300 feet · minimum lot depth: >= 125 feet

  “in the rural district, the minimum lot area shall be one hundred twenty thousand (120,000) square feet; however, not less than eighty thousand (80,000) square feet in any lot in the rural district shall consist of soils which are rated as moderately drained or better by the cheshire county conservation district.”

  One more reviewed finding on this topic

  • Specified — R-1 Residence District inside Fitzwilliam town.

    “residence 1 40,000 100 100 50 10 nr nr 36”

• SetbacksSpecified

  R-1 Residence District inside Fitzwilliam town.

  • See § 127-19 for special provisions and exceptions to dimensional regulations.

  minimum front yard: >= 50 feet · minimum side or rear yard: >= 10 feet

  “residence 1 40,000 100 100 50 10 nr nr 36”

• Lot coverageNone

  R-1 Residence District inside Fitzwilliam town.

  • The table's NR notation means no specific minimum or maximum regulation; other § 127-19 provisions and exceptions remain applicable.

  “note: the symbol “nr” on this table indicates no specific minimum or maximum regulation. [...] residence 1 40,000 100 100 50 10 nr nr 36”

  One more reviewed finding on this topic

  • None — Rural District inside Fitzwilliam town.

    “note: the symbol “nr” on this table indicates no specific minimum or maximum regulation. [...] rural 120,000 1 300 125 75 20 nr nr 36”

• Building heightSpecified

  R-1 Residence District inside Fitzwilliam town.

  • See § 127-19 for special provisions and exceptions to dimensional regulations.

  maximum building height: <= 36 feet

  “residence 1 40,000 100 100 50 10 nr nr 36”

• Who permits septicState (with conditions)

  Subsurface septic systems serving buildings inside Fitzwilliam town.

  • The Town also applies local regulation when issuing a certificate of occupancy.

  “the septic system meets the requirements of the new hampshire department of environmental services subsurface bureau and local regulation,”

Still unanswered

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

• Owner-builder exemption — Owner-builders inside Fitzwilliam town.
• Minimum dwelling size — Principal single-family dwellings inside Fitzwilliam town.
• Tiny homes — Tiny-home occupancy inside Fitzwilliam town.
• Septic permit — New or altered subsurface septic systems inside Fitzwilliam town.
• Septic inspection — Subsurface septic systems inside Fitzwilliam 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.

Off-grid gear

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

• Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
• Power Bluetti Solar generators and home battery backup for living off the grid.
• Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
• Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.