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

Town of Hiram’s own rules

• Building permitRequired

  Buildings, uses, and sanitary facilities in Hiram's Village, Residential, Rural Residential, and applicable overlay districts.

  • Applications are submitted to the Code Enforcement Officer.
  • The ordinance states that permit requirements apply according to Article 6.

  “A plumbing permit and a building or use permit shall be required for all buildings, uses and sanitary facilities, according to the provisions of Article 6 of this Ordinance.”

• Building code adoptedPartial

  Buildings constructed or renovated inside Hiram town limits.

  • Hiram adopted the building-code portion of MUBEC but not the energy-code portion.
  • The town page states that the State directed adoption of the 2021 I-codes on April 7, 2025.

  “The Town of Hiram has voted to adopt only the building code portion of the Maine Uniform Building and Energy Code ("MUBEC") and not he energy code portion thereof.”

• Local zoningPresent (with conditions)

  Land inside Hiram town limits.

  • Land, structures, and uses must conform to the requirements of the district where located; conditional uses require Planning Board approval.

  “the effective date of this ordinance is september 14, 1974.”

• Manufactured homesLimited

  Newer manufactured housing placed inside Hiram town limits.

  • A newer mobile-home foundation must meet Manufactured Housing Board installation standards.
  • The ordinance describes a typical foundation as a six-inch reinforced concrete slab atop 18 inches of packed gravel, while allowing a compliant pier foundation.

  typical concrete slab thickness: 6 inches (Typical foundation standard stated by the ordinance.) · packed gravel thickness: 18 inches (Typical foundation standard stated by the ordinance.)

  “A foundation for a “newer mobile home” must conform to the installation standards established by the Manufactured Housing Board. Typically, this consists of a six (6) inch re-enforced concrete slab atop eighteen (18) inches of packed gravel. A building permit for the foundation must be obtained from the Code Enforcement Officer.”

• Accessory dwellingsLimited

  Accessory dwelling units on lots with a single-family principal dwelling inside Hiram town limits.

  • Only one ADU is allowed on a lot with a single-family principal structure.
  • No new ADU may be built on a parcel with an existing two-unit dwelling or two separate existing dwellings.
  • The ADU addition must meet state subsurface-wastewater minimum lot-size requirements.
  • Attached or same-structure ADUs must meet the principal dwelling's dimensional and setback requirements.

  ADUs allowed per eligible lot: 1 (Lot where a single-family dwelling unit is the principal structure.)

  “Only one (1) ADU shall be allowed on any lot where a single-family dwelling unit is the principal structure. The addition of an ADU on a lot with an existing single-family home is exempt from any minimum lot area and road frontage requirements.”

• Who permits septicLocal (with conditions)

  Subsurface wastewater disposal and plumbing permitting inside Hiram town limits.

  • State subsurface-wastewater permit law also applies.
  • Hiram's ordinance requires plumbing permits for sanitary facilities.

  “A plumbing permit and a building or use permit shall be required for all buildings, uses and sanitary facilities, according to the provisions of Article 6 of this Ordinance.”

• Subdividing landRegulated (with conditions)

  Residential subdivisions and mobile-home parks inside Hiram town limits.

  • Mobile-home parks must meet residential-subdivision requirements except where Article 5.9 supplies a conflicting requirement.
  • They must also conform to applicable state laws and local ordinances or regulations.

  “Except as stipulated below, mobile home parks shall meet all the requirements for a residential subdivision, and shall conform to all applicable State Laws and local ordinances or regulations.”

• Driveway accessLimited

  Proposed driveways associated with Hiram shoreland-zone building permits.

  • A Maine DOT permit applies where the driveway enters a state or state-aid numbered highway.
  • The Code Enforcement Officer or Road Commissioner issues the permit where it enters a town road.
  • For a private or association road, the owner or association must provide a signed permission letter.

  “b. code enforcement officer or road commissioner if the proposed driveway enters onto a town road.”

• Permit feesPublished (with conditions)

  Hiram code-enforcement permits.

  • The town page identifies the schedule as “Permit Fee Schedule 5.2026”; the schedule itself could not be opened during this bounded research.

  “Below you will find PDFs that explain the basic permit information as well as a fee file. [...] Permit Fee Schedule 5.2026 (pdf)”

Rules another office applies inside Town of Hiram

Town of Hiram 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

  Residential District lots inside Hiram town limits.

  • Additional area may be required by other ordinance provisions.

  minimum lot size without sanitary sewers: 40000 square feet · minimum lot size with sanitary sewers: 20000 square feet

  “minimum lot size without sanitary sewers 40,000 square feet with sanitary sewers 20,000 square feet”

• SetbacksSpecified

  Residential District development inside Hiram town limits.

  • Front setback is stated with ordinance footnote (3); side setback has ordinance footnote (4).

  front setback: 50 feet (Also shown as 100 feet with ordinance footnote (3).) · side setback: 20 feet (Ordinance footnote (4).) · rear setback: 20 feet

  “minimum yard dimensions front setback 50 feet (3) / 100 feet (3) side setback 20 feet (4) rear setback 20 feet”

  One more reviewed finding on this topic

  • Specified — Village District development inside Hiram town limits.

    “minimum yard dimensions front setback 25 feet (3)/100 feet (3) side setback 20 feet (4) rear setback 20 feet”

• Lot coverageSpecified

  Residential District lots inside Hiram town limits.

  maximum lot coverage: <= 10 percent

  “MINIMUM LOT SIZE Without sanitary sewers 40,000 square feet With sanitary sewers 20,000 square feet [...] MAXIMUM LOT COVERAGE 10%”

Still unanswered

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

• Owner-builder exemption — Owner-performed residential construction inside Hiram town limits.
• Inspections — Building inspections for construction inside Hiram town limits.
• Certificate of occupancy — Occupancy of new or altered residential buildings inside Hiram town limits.
• Minimum dwelling size — Principal single-family dwellings inside Hiram town limits.
• Building height — Building height inside Hiram town limits.

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 Hiram 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.