Zoning, building permits and septic rules in Town of Charlemont, Massachusetts

Town of Charlemont’s own rules

• Local zoningPresent (with conditions)

  Land inside Charlemont town limits. The town administers its own Zoning Bylaws (2024 text), not county zoning.

  • Uses are controlled by district under Section 32; the floodplain overlay (Section 45) applies on top of the base districts.
  • Earlier 2022-2023 and 2019 bylaw texts are also posted on the town site; the 2024 text is the version relied on here. Pending 2026 amendments (ADUs, wireless setbacks, social equity) were noticed for a public hearing and were not verified as adopted.

  “for the purposes of this bylaw, the town of charlemont is hereby divided into the following districts.”

• Zoning districtsPublished (with conditions)

  Land inside Charlemont town limits: village center (VC), rural residential (RR), rural residential/marijuana retail (RR/MRD) and rural residential/route 2 (RR/R2D) districts, plus the floodplain overlay.

  • The use table in Section 32.3 and the dimensional schedule in Section 33.1 are keyed to these district columns.

  “village center district rural residential district rural residential / marijuana retail district rural residential / route 2 district”

• Minimum lot sizeDistrict specific (with conditions)

  Single-family and two-family lots in the Rural Residential (RR) district inside Charlemont town

  • Footnote 1 applies: for any multi-family dwelling, the required lot area increases for each unit beyond two by 20,000 sq. ft. in the rr district only.
  • Footnote 2 applies: setback areas in front, rear and side yards may not be rendered impervious.
  • Lot area set by the dimensional schedule (Section 33.1); the table is extracted from the PDF, so the footnote superscript mapping was checked only against footnote text.

  minimum lot area: >= 45000 sq ft (multi-family dwellings: add 20,000 sq ft per unit beyond two (rr district only)) · minimum lot frontage: >= 150 ft

  “5,000 50 10 10 10 32 80% 45,0001 150 504 25 25 32 35%”

  One more reviewed finding on this topic

  • District specific (with conditions) — Lots in the Village Center (VC) district inside Charlemont town

    “5,000 50 10 10 10 32 80% 45,0001 150 504 25 25 32 35%”

• Lot coverageDistrict specific (with conditions)

  Rural Residential (RR) district inside Charlemont town

  • Maximum lot coverage 35% per the dimensional schedule.

  maximum lot coverage: <= 35 percent

  “5,000 50 10 10 10 32 80% 45,0001 150 504 25 25 32 35%”

  One more reviewed finding on this topic

  • District specific (with conditions) — Village Center (VC) district inside Charlemont town

    “5,000 50 10 10 10 32 80% 45,0001 150 504 25 25 32 35%”

• Building heightSpecified

  Principal structures in the Village Center (VC) and Rural Residential (RR) districts inside Charlemont town

  • Height is measured per the Article V definition of building height (mean finished grade to roof).

  maximum building height: <= 32 ft

  “5,000 50 10 10 10 32 80% 45,0001 150 504 25 25 32 35%”

• Living in an RVTemporary only (with conditions)

  Camper, travel trailer and motor home occupancy on private land inside Charlemont town, outside licensed campgrounds and mobile home parks

  • Camper/trailers are prohibited from year-round occupancy and from business use (Section 47.2 item 1).
  • A temporary occupancy permit is required through the Board of Health regulations (Section 47.2 item 2).
  • No service such as electrical, gas or septic may be attached to a camper/trailer, except temporary electrical service approved by the electrical inspector.
  • Section 47.1 excludes campers in a licensed campground, mobile home or trailer park.

  “camper/trailers are considered dwellings for temporary occupancy and are prohibited from yearround occupancy use or for business purposes.”

• Camping on your landLimited

  Temporary camping or camper occupancy on private land inside Charlemont town, outside licensed campgrounds

  • Requires a temporary occupancy permit issued by the town through the Board of Health.
  • Year-round occupancy is prohibited.
  • Campgrounds are a separate special-permit use in the use table (Section 32.3); their rules were not opened.

  “a temporary occupancy permit will be required for occupancy in accordance with the charlemont board of health regulations.”

• Manufactured homesLimited

  Mobile (manufactured) homes used as full-time dwellings inside Charlemont town, in the village center, rural residential, RR/MRD and RR/R2D districts

  • Requires a special permit from the Planning Board in each listed district (use table legend: sp).
  • Mobile home parks are a separate use under Section 42; the Section 42 park rules require parcels at least 10 times the basic minimum lot area.

  “sp: the use may be permitted by a special permit granted by the planning board (see section 23.9)”

• Accessory dwellingsLimited

  Accessory apartments in a single-family home or accessory structure inside Charlemont town

  • Limit of four rooms and 800 square feet of living area.
  • Occupied by no more than two people.
  • Owner must permanently occupy either the principal or the accessory residence.
  • Adequate off-street parking required, placed to the side or rear of the principal structure where possible.
  • Accessory structure may not be expanded in square footage to create the unit.
  • Use-table status for accessory apartments in each district was not read; the 2026 ADU amendment was noticed for hearing but its adoption was not verified.

  maximum living area: <= 800 sq ft · maximum rooms: <= 4 rooms · maximum occupants: <= 2 people

  “the accessory apartment shall be occupied by no more than two people. the owner of the property shall permanently occupy the principal or accessory residence.”

• Who permits septicMixed (with conditions)

  On-site sewage disposal (septic) inside Charlemont town. The Charlemont Board of Health administers local septic rules that sit under the state Title 5 code (310 CMR 15.000).

  • Title 5 (state, 310 CMR 15.000) governs except where the local regulations set more stringent standards.
  • Town relies on on-site systems for sewage in 100% of areas outside the downtown center.
  • Local septic regulations were adopted 6/27/2012.

  “the provisions of title 5 shall govern, except where more stringent standards are set by these regulations.”

• Septic permitLimited

  Building permits inside Charlemont town that add a bedroom, enlarge the building footprint or excavate near the dwelling.

  • This is a Board of Health sign-off on building permits that affect septic capacity or components. It is not a general septic installation permit; the Title 5 installer permit was not located.
  • Section 10 requires the system be sized for projected flows and components located and field-identified before sign-off.

  “the board of health shall not sign-off on a building permit that includes the creation of an additional bedroom(s) within the dwelling, any addition to the building footprint, or the excavation of the exterior yard areas adjacent to the dwelling”

• Septic inspectionLimited

  Title 5 system inspections under 310 CMR 15.301 for properties inside Charlemont town

  • Inspections must be witnessed by a Board of Health member or agent, who collects a fee per the Board's fee schedule.
  • Dormant systems are marked as needing further evaluation and are not passed until about 6 months of normal flow and re-inspection.
  • The trigger conditions for 15.301 inspections are state Title 5 rules and were not re-opened.

  “all title 5 system inspections under 310 cmr 15.301 shall be witnessed by a member of the charlemont board of health or its agent.”

• Building in a floodplainLimited

  Development inside the floodplain overlay district (Section 45) in Charlemont town, including structural and non-structural activities

  • Applies only within the floodplain overlay district.
  • Must comply with MGL ch. 131 section 40 and the state building code flood provisions (780 CMR 3107), and wetlands rules (310 CMR 10.00 and 13.00).

  “all development in the district, including structural and non-structural activities, whether permitted by right or by special permit must be in compliance with chapter 131, section 40 of the massachusetts general laws”

• Permit processPartial

  Building, electrical and plumbing permits for work inside Charlemont town

  • The town page links to an online permitting portal and the FRCOG cooperative inspection program page, but the portal steps were not opened.
  • Contact listed on the page: building inspector and building commissioner at FRCOG, 413-774-3167.

  “the town of charlemont's building, electrical and plumbing inspection services are provided by the franklin regional council of government&rsquo;s cooperative inspection program.”

Rules another office applies inside Town of Charlemont

Town of Charlemont 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 (with conditions)

  All construction inside Charlemont town, under the Massachusetts State Building Code (780 CMR), which the town enforces through its building inspector.

  • The state code governs; the town has not been shown to adopt a separate local building code. Current edition and amendments are set by the Board of Building Regulations and Standards.

  “the massachusetts state building code consists of a series of international model codes and any state-specific amendments adopted by the board of building regulations and standards (bbrs).”

Still unanswered

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

• Owner-builder exemption — Owner-builder exemption for construction inside Charlemont town
• Inspections — Construction inside Charlemont town
• Minimum dwelling size — Minimum floor area of a dwelling inside Charlemont town
• Tiny homes — Tiny homes inside Charlemont town
• Off-grid sanitation — Off-grid sanitation inside Charlemont 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.