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

Town of Bowdoinham’s own rules

• Building permitRequired

  New construction, alteration, relocation, demolition or replacement of buildings in Bowdoinham town

  • Exempt: a shed or residential accessory structure of 150 sq ft or less, if the property complies with all town ordinances and state law.
  • Exempt: maintenance, repair or replacement that does not change the internal layout or external footprint, including deck area.

  “a building permit is required to expand, change, or replace an existing use or structure; or engage in the construction, alteration, relocation, demolition or replacement of any building or part thereof.”

  One more reviewed finding on this topic

  • Limited — Sheds and residential accessory structures in Bowdoinham town

    “the construction, alteration, addition, relocation, demolition, or replacement of a shed or residential accessory structure that has a total area of 150 sq ft or less.”

• Local zoningPresent (with conditions)

  Land inside Bowdoinham town's limits. The town administers its own Land Use Ordinance, which sets Residential/Agricultural and Village district standards.

  • Shoreland zoning and floodplain rules layer on top of the district rules.
  • The Land Use Ordinance on the town site is labeled amended 06-10-2026; the text opened for district standards is the Article 5 review copy headed effective revision date June 11, 2025.

  “the codes enforcement officer is responsible for the administration and enforcement of: the town's land use ordinance, the state plumbing code, state subsurface wastewater disposal rules”

• Zoning districtsPublished (with conditions)

  Zoning districts in Bowdoinham town, including Residential/Agricultural and Village districts

  • Article 5 also sets Village District II (dimensional standards in the same section); a land use map and shoreland zoning map are posted on the Land Use Ordinance page.
  • Shoreland zone is 250 feet from certain water and wetland features, layered on the district rules.

  “a) residential/agricultural district b) village i district c) village ii district”

• Minimum lot sizeSpecified

  Residential/Agricultural District, for lots not within a post-June 10, 2009 subdivision, in Bowdoinham town (main single-family residential and agricultural district)

  • Maximum residential density is 1 dwelling unit per acre.
  • Minimum road frontage is 150 ft.

  minimum lot size: 1 acre (lots within a subdivision created after June 10, 2009 use the 20,000 sq. ft. figure)

  “a) for all lots which do not meet subsection b) below. (i) minimum lot size: 1 acre (ii) maximum residential density: 1 dwelling unit (du)/acre1 (iii) minimum road frontage:2 150 ft.”

  One more reviewed finding on this topic

  • Specified — Residential/Agricultural District, lots within a subdivision created after June 10, 2009, in Bowdoinham town

    “b) lots which are within a subdivision (which is created after june 10, 2009). (i) minimum lot size: 20,000 sq. ft.”

• SetbacksSpecified

  Residential/Agricultural District, lots not within a post-June 10, 2009 subdivision, in Bowdoinham town

  • Setback is the minimum horizontal distance from a lot line to the nearest part of a building, including porches, steps and decks; ramps needed for disability access into a principal dwelling are exempt.
  • A Feb 2026 proposed amendment would change internal subdivision front setbacks; it is not shown as adopted and is not applied here.

  front setback: 50 ft · side setback: 10 ft · rear setback: 10 ft

  “(iv) minimum setbacks for buildings:3 (a) front lot line: 50 ft. (b) side lot line: 10 ft. (c) rear lot line: 10 ft.”

  One more reviewed finding on this topic

  • Specified — Residential/Agricultural District, lots within a subdivision created after June 10, 2009, for buildings on roads within the subdivision, in Bowdoinham town

    “minimum setbacks for buildings on roads within the subdivision: (a) front lot line: 20 ft. (b) side lot line: 10 ft. (c) rear lot line: 10 ft.”

• Building heightSpecified

  Village District I in Bowdoinham town (not the Residential/Agricultural district)

  • Structures shall not cover more than 30% of any lot in Village District I; lots non-conforming due to lot size may have up to 50%.

  maximum building height: <= 35 ft

  “f) maximum building height: 35 ft. g) structures shall not cover more than 30% of any lot. lots legally non-conforming due to lot size may have up to 50% structure coverage.”

• Building in a floodplainRequired

  Construction or development within areas of special flood hazard in Bowdoinham town

  • Permit from the Code Enforcement Officer; where a site is in both a floodplain and shoreland zone, a shoreland zoning permit is obtained from the Planning Board.
  • Town participates in the National Flood Insurance Program.

  “before any construction or other development begins within any areas of special flood hazard, a flood hazard development permit shall be obtained from the code enforcement officer.”

• Permit feesPublished (with conditions)

  Building, plumbing, subsurface wastewater, floodplain, shoreland and subdivision permit fees in Bowdoinham town

  • Fees are from the 2023 fee schedule; the Code Enforcement page lists this schedule and a newer one was not found.
  • Building permit minimum fee is $20.00 and additions to single-family dwellings are $0.05 per sq ft (fee schedule).

  1 or 2 family dwelling under 2,000 sq ft, per sq ft: 0.15 USD/sq ft (not including basement) · 1 or 2 family dwelling 2,000 sq ft and greater, per sq ft: 0.2 USD/sq ft (not including basement) · residential garages, barns, storage sheds, per sq ft: 0.05 USD/sq ft · building permit minimum fee: >= 20 USD

  “1 or 2 family dwelling (not including basement) under 2000 sq. ft $0.15 /sq ft”

Still unanswered

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

• Owner-builder exemption — Owner-builder construction in Bowdoinham town
• Building code adopted — Building code in Bowdoinham town
• Inspections — Building inspections in Bowdoinham town
• Certificate of occupancy — Certificate of occupancy in Bowdoinham town
• Minimum dwelling size — Minimum dwelling size in Bowdoinham 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 Bowdoinham 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.

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