Bolthole Index

Washington County, Maine

Zoning, building permits and septic rules in Calais, Maine

Calais is a city in Washington County, Maine. Calais adopts its own zoning, so inside its limits Calais’s rules apply, not the county’s. 4 rules below are quoted from official sources and independently re-checked, most recently on November 12, 2026. Rules for unincorporated land are on the Washington County page.

Answers from the rulebook for Calais

Calais’s own rules

  • Building permitRequired

    New construction or expansion/change/replacement of structures or uses inside Calais city

    • Obtained from the code enforcement officer
    • Site plan approval from planning board required where the use table shows an s
    • Ordinance allows up to 30 days for review

    building permit fee: $50.00 minimum plus $30 per 1,000 sq ft gross floor area USD ($25.00 for accessory structures and additions to residential structures with footprint up to 800 sq ft) · inspection fee: 25 USD per permit

    “a building permit is required for any new construction or activity that would expand, change, or replace an existing structure or use. it is obtained from the code enforcement officer.”
  • Local zoningPresent

    Land inside Calais city

    • Details of districts not reviewed; ordinance text itself not opened.
    “some areas of involvement include the planning board, board of appeals, site plan review process, downtown revitalization, and zoning and land use.”
  • Permit feesPublished

    Building permits inside Calais city

    • Fee based on gross floor area

    building permit: $50.00 minimum plus $30 per 1,000 sq ft USD ($25.00 for accessory structures and residential additions up to 800 sq ft footprint)

    “building permit $50.00 minimum plus $30 per 1,000 square foot of gross floor area or fraction thereof.”
  • Permit processPublished

    Building permit applications inside Calais city

    • Application must be signed and dated and include a site plan
    “every application for a building permit must be signed and dated by the applicant.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Calais or Washington County directly.

  • Owner-builder exemption — Calais city
  • Building code adopted — Calais city
  • Inspections — Calais city
  • Certificate of occupancy — Calais city
  • Minimum dwelling size — Calais city
21 more unanswered
  • Minimum lot size
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Shed and accessory-building permit exemption
  • Subdividing land
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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

← All of Washington County: county rules, score and offices