Zoning, building permits and septic rules in Town of Wilton, Maine

Town of Wilton’s own rules

• Building permitRequired

  Erecting, structurally altering, enlarging or moving any building or structure inside Wilton town

  • Permit is issued by the Code Enforcement Officer or the Planning Board according to Table A.
  • The CEO must certify on the permit that plans and proposed use conform to the zoning ordinance (section 7.2(b)).
  • An application fee set under section 7.3 must accompany the application (section 7.2(d)).
  • The zoning ordinance must be met even where the use does not need a building permit (section 7.2 lead sentence).

  “no building or structure or part thereof shall be erected, structurally altered, enlarged, or moved unless a building permit for such action has been issued by the code enforcement officer or the planning board, according to table a.”

• Local zoningPresent (with conditions)

  Land inside Wilton town limits (Franklin County, Maine) under the town's own zoning ordinance

  • Revision date taken from the PDF file name (10.17.23); the adoption or effective date stated inside the document was not captured, so effective_at is null.
  • Text refers to the Franklin County registry of deeds, consistent with the town being in Franklin County.
  • Pending 2026 warrant-article changes were not verified; this record reflects the 10.17.23 text.

  “shall be known and may be cited as the "zoning ordinance of the town of wilton."”

• Zoning districtsPublished (with conditions)

  Zoning districts for land inside Wilton town

  • Districts named in the district tables include Residential I, Residential II, Limited Residential & Recreational, Farm and Forest, Downtown Village, Commercial and Industrial, plus shore land, resource protection and watershed overlays.
  • Use tables (Table A) and space and bulk standards (Table B) are organized by zone; the zoning map was not opened.

  “table b. zone residential i 2 residential ii 2 limited residential & recreational2,6, 7, 8 farm and forest2,6 downtown village 2 commercial2,9 industrial 2”

• Minimum lot sizeDistrict specific (with conditions)

  Residential subdivisions in the Farm & Forest zone inside Wilton town, density set by the rural land management system

  • Overall suitability rating (OSR) from four scored factors on a soils map by a soil scientist, certified by the Franklin County Conservation District.
  • Schedule: OSR 30 to 35 gives 40,000 sq ft; 24 to 29 gives 80,000 sq ft; 16 to 23 gives 120,000 sq ft; 12 to 15 gives 200,000 sq ft; less than 12 is not permitted.
  • Applies to residential subdivisions under the rural land management system.

  minimum lot area per dwelling unit (OSR 30 to 35): 40000 sq ft (OSR 24-29 80,000; 16-23 120,000; 12-15 200,000; below 12 not permitted)

  “overall suitability rating minimum lot area per dwelling unit 30 to 35 24 to 29 16 to 23 40,000 sq. ft. 80,000 sq. ft. 120,000 sq. ft.”

• Living in an RVLimited

  Camper, camper trailer or RV used for residential purposes on land inside Wilton town

  • Staying more than 30 days requires a permit from the code enforcement officer.
  • Inhabited no more than 180 days in any calendar year.
  • Wastewater must be disposed of through written permission from the sewer department superintendent to use the town sewage treatment plant, or disposed of under the Maine state plumbing code.
  • Additional shoreland zone conditions apply (the same section continues beyond the excerpt).

  maximum inhabited days (with CEO permit): <= 180 days per calendar year

  “a camper, camper trailer, or rv that is used for residential purposes, may remain in place for more than thirty (30) days with a permit from the code enforcement officer, provided that it is not inhabited for more than one hundred and eighty (180) days in any one calendar year”

• Camping on your landLimited

  Individual private campsites (tent or RV) on lots not part of a licensed campground inside Wilton town

  • Only one campsite per lot existing on the effective date of the ordinance, or 30,000 sq ft of lot area within the shore land zone, whichever is less (paragraph i.1).
  • Campsite placement, including any RV or tent platform, must be set back 100 feet horizontally from the normal high-water line (paragraph i.2).
  • Campgrounds are a separate use: they must meet state licensing and a minimum 5,000 sq ft per site (paragraph j).

  “individual, private campsites not associated with campgrounds are allowed provided the following conditions are met:”

• Manufactured homesLimited

  Mobile or manufactured homes placed on land inside Wilton town

  • The home must be built to the National Manufactured Housing Construction and Safety Standards Act of 1974, or meet the alternative standards in section 5.25(b).
  • Under the alternative standards, the home must be at least 14 feet wide, have a pitched roof, have residential-appearance siding, and be installed under the Maine Manufactured Housing Board installation standard chapter 900.
  • Existing mobile home dwellings used before the rule took effect are handled by a separate paragraph (5.25(c)) not captured here.

  minimum width (alternative standard): >= 14 feet (applies when the home is not built to the federal manufactured housing standard)

  “no person shall locate or place a mobile home in the town of wilton unless it complies with the following standards.”

• Accessory dwellingsLimited

  ECHO (elder cottage housing opportunity) unit accessory to a single-family dwelling inside Wilton town

  • Separated from the principal dwelling by at least 15 feet.
  • Limited to two bedrooms, and the subsurface sewage system must be working and sized for the added flow under the Maine state plumbing code.
  • Zoning setbacks, parking and ingress/egress standards apply.
  • Binding agreement before a building permit limits use to ECHO purposes; the unit must be removed or converted to a non-habitable accessory structure within 90 days after occupancy ends.
  • An occupancy permit must be issued by the code enforcement officer each year on the anniversary of the building permit.

  maximum living space: <= 750 sq ft · minimum separation from principal dwelling: >= 15 feet

  “the maximum size of the "echo" unit shall be 750 square feet of living space and shall be limited in size to accommodate two (2) bedrooms.”

• Mandatory utility hookupConditional

  Development that requires new sewer or water line installation inside Wilton town; not a general connection mandate for an individual home

  • Developers install sewer lines at their own expense under the town's regulations and standards.
  • Water lines must be installed under the Public Utility Commission regulations adopted by the town's water department.
  • No rule requiring an individual new home to connect to public sewer or water when available was found in the opened pages.

  “the developer must install sewer lines at their own expense in conformance with the town's regulations and standards.”

• Driveway accessRequired

  New street construction and driveway entrances connecting to roads inside Wilton town

  • Certificate of compliance from the road commissioner is needed before the use starts or the structure is occupied.
  • A driveway is an access way serving not more than two single-family dwellings or one two-family dwelling (definitions).
  • Culverts at entrances are maintained by the town if they meet the standards or were permitted by the road commissioner.

  “a landowner must receive a certificate of compliance from the road commissioner prior to initiating the use or occupying the structure.”

• Building in a floodplainRequired

  Buildings and structures built, enlarged, replaced or moved inside a floodplain area in Wilton town

  • Such work must comply with the town's floodplain management ordinance, which was not opened.
  • Mobile home parks in Zone A need an evacuation plan filed with the town civil emergency preparedness office.

  “all buildings and structures constructed, erected, enlarged modified, replaced or relocated within a floodplain area must comply with the requirements of the floodplain management ordinance of the town of wilton.”

• Permit processPartial

  Building permit process inside Wilton town under the zoning ordinance

  • Permits come from the Code Enforcement Officer or Planning Board under Table A.
  • Permits are not transferable and expire one year after issuance unless substantial construction starts, with one possible one-year extension.
  • Plot plan rules (section 7.4) and the forms the CEO may develop are not captured, so the process is only partly documented.

  “permits issued under this ordinance are not transferable and expire one year after date of issuance.”

Rules another office applies inside Town of Wilton

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

• Building code adoptedAdopted

  New construction and alterations inside Wilton town under the Maine Uniform Building and Energy Code (MUBEC), as the town states

  • The town page states the MUBEC building code has been in effect since 7/1/2012 and directs residents to the Code Enforcement Officer for the inspection process.
  • The town page points to the state Department of Public Safety, Building Codes and Standards for code information.

  “as of 7/1/2012 the mubec building code is in effect. you must contact the code enforcement officer about the inspection process.”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemption from permits or inspections inside Wilton town
• Inspections — Building inspections for construction inside Wilton town
• Certificate of occupancy — Certificate or permit of occupancy for a new home inside Wilton town
• Minimum dwelling size — Minimum floor area for a dwelling inside Wilton town
• Building height — Maximum building height in districts inside Wilton 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.