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

Town of Williamstown’s own rules

• Local zoningPresent (with conditions)

  Land inside Williamstown town limits zoned under Town of Williamstown Code Chapter 70 (Zoning)

  • Use and dimensional rules vary by district; the Chapter 70 district maps and the Dimensional Schedule (Attachment 1, § 70-4.3) were not opened.
  • Septic, well, and Board of Health rules apply in addition to zoning.

  “not more than one single-family dwelling shall be erected on a lot unless so authorized in a major residential development approved under § 70-7.1c, major residential development, or authorized as a second dwelling unit approved under the restrictions of § 70-7.1d, second dwelling units.”

• SetbacksSpecified

  Detached accessory buildings and structures on lots in Williamstown town zoned under Chapter 70 (all districts unless a more specific rule applies)

  • Detached accessory buildings may sit in the front yard only with Board of Appeals approval.
  • In General Residence districts, on lots with a maximum frontage of 80 feet and lot area of 10,000 square feet or less, one detached storage building of 120 square feet or less may be located four feet from the rear and side property lines.
  • Attached accessory buildings are treated as part of the principal building for yard requirements.
  • Principal-building setbacks are in the Dimensional Schedule (Attachment 1), not reviewed.

  minimum setback of detached accessory building from property lines (rear and side yard): >= 15 ft (General Residence small-lot storage building (4 ft) and front yard with Board of Appeals approval)

  “detached accessory buildings or structures may be erected in the rear and side yard areas (and front yard with board of appeals approval) not closer than 15 feet to the property lines.”

• Building heightSpecified

  Buildings and structures on land inside Williamstown town zoned under Chapter 70 (general cap; all districts unless modified under § 70-4.1b)

  • Under § 70-4.1b(2), building height in the Village Business District may be increased to 40 feet (wording cut off in the captured page and not quoted here).
  • The Dimensional Schedule (Attachment 1) may set district-specific height limits; not reviewed.
  • In no case may height exceed the limits in sections 35a to 35d of chapter 90 of the Massachusetts General Laws, or any more restrictive amendments.

  maximum building height: <= 35 feet (or 2 1/2 stories for conventional homes; or three stories above average ground level for split-level design)

  “the height of any building or structure shall not exceed 35 feet, or 2 1/2 stories in the case of homes of conventional design, or three stories above the average ground level in the case of split-level design, except that in no case shall the height exceed the limits permitted by sections 35a to 35d, inclusive, of chapter 90, and any more restrictive amendments thereto, of the general laws of massachusetts.”

• Accessory dwellingsLimited

  Second dwelling units on single-family lots in Williamstown town zoned under Chapter 70

  • A second dwelling unit is allowed only as authorized under the restrictions of § 70-7.1d (second dwelling units), which was not opened.
  • Only one single-family dwelling per lot is allowed otherwise, unless a major residential development under § 70-7.1c applies.

  “not more than one single-family dwelling shall be erected on a lot unless so authorized in a major residential development approved under § 70-7.1c, major residential development, or authorized as a second dwelling unit approved under the restrictions of § 70-7.1d, second dwelling units.”

• Who permits septicMixed (with conditions)

  On-site sewage treatment and disposal systems on land inside Williamstown town. The Town Board of Health administers the rules; state Title 5 (310 CMR 15.00) is the technical standard.

  • Systems are governed by 310 CMR 15.00 (state Title 5) and the Williamstown Board of Health regulations in Chapter 157.
  • Enforcement of the chapter is governed by 310 CMR 11.00.
  • The Berkshire County Boards of Health Association runs the contractor training program referenced in the chapter.

  “the state environmental code, 310 cmr 11.00, shall govern the enforcement of these regulations.”

• Septic inspectionRequired

  Septic systems inspected under 310 CMR 15.300 and following on land inside Williamstown town, including dwellings that have been unoccupied

  • A fee set by the Board of Health is collected before the inspection.
  • A dwelling that has been unoccupied gets a follow-up inspection six months after reoccupation, unless the Board of Health or its agent decides the timing differently based on system age, records, soils, component condition, and time out of use.
  • Inspection standards come from 310 CMR 15.300 and following.

  “any inspection of the septic system for a dwelling that has been unoccupied will undergo a follow-up inspection six months after the date of reoccupation.”

• Mandatory utility hookupConditional

  New private drinking-water wells on land inside Williamstown town

  • Chapter 164 bars new private drinking-water wells where a municipal water supply or public water main is within 200 feet of the nearest property line; it does not on its own require a connection.
  • The Chapter 164 text was not checked for whether it is the current version.
  • A sewer connection requirement (Chapter 117 Sewers) was not located or opened, so no sewer rule is recorded here.
  • Chapter 70 reportedly requires connection to town water for new structures; this was seen only in a search snippet and is not recorded as verified.

  distance to public water main that bars a new private well: >= 200 ft (measured from the applicant's nearest property line)

  “the construction of a new private well for drinking water is prohibited where access to the municipal water supply or public water main is within 200 feet of the applicant's nearest property line.”

• Subdividing landRegulated (with conditions)

  Division of land into lots in Williamstown town, administered by the Planning Board

  • Subdivision standards are in Chapter 170 (Subdivision Rules and Regulations), not opened.
  • Lots served by shared access or utilities are reviewed under Chapter 170 standards.

  “part iv planning board regulations chapter 169 scenic roads rules and regulations (§ 169-1 &ndash; § 169-10) chapter 170 subdivision rules and regulations (§ 170-1.1 &ndash; § 170-5.4)”

Still unanswered

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

• Building permit — Building permits for new construction in Williamstown town
• Owner-builder exemption — Owner-builder exemption for residential construction in Williamstown town
• Building code adopted — Building code in Williamstown town
• Inspections — Building inspections in Williamstown town
• Certificate of occupancy — Certificates of occupancy for new dwellings in Williamstown 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 Williamstown 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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