Accessory Structures in Bristol County, MA (2026)
1 county-level rule, plus city-specific rules for 4 cities in Bristol County, Massachusetts.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Bristol County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Garage Conversions
Garage conversions throughout Bristol County require building permits and must comply with local zoning ordinances and 780 CMR building code. Conversions to living space must meet residential standards. ADU conversions may be by right under the 2025 state law if under 900 sq ft.
Bristol County Garage Conversion Rules
Some RestrictionsMass. Gen. Laws ch. 40A, § 3A – MBTA communities multi-family zoning
An MBTA community shall have a zoning ordinance or by-law that provides for at least 1 district of reasonable size in which multi-family housing is permitted as of right; provided, however, that such multi-family housing shall be without age restrictions and shall be suitable for families with children. For the purposes of this section, a district of reasonable size shall: (i) have a minimum gr...
Accessory Structures by City in Bristol County
4 cities in Bristol County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
All Bristol County ordinances
See every category we cover for Bristol County: parking, noise, fences, fires, animals, pools, and more.
Bristol County Ordinance Hub →