ADU rules in New Bedford, MA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Under Massachusetts law (Ch. 358 of Acts of 2024, effective Feb 2025), ADUs under 900 sq ft are allowed by right on single-family lots. New Bedford's Planning Department has prepared an ADU zoning ordinance update. ADUs must have a separate entrance and cannot exceed 900 sq ft or half the principal dwelling area.
The statewide ADU law (760 CMR 71.00) allows accessory dwelling units by right in single-family zoning districts. New Bedford's Planning Department prepared an ADU information sheet in February 2025 addressing local implementation. ADUs must be under 900 sq ft or 50% of the principal dwelling, have a separate entrance, and municipalities cannot impose owner-occupancy requirements. Both attached and detached ADUs are permitted under the state framework.
Municipalities cannot deny conforming ADU applications. Unpermitted ADU: standard building code enforcement under 780 CMR.
New Bedford, MA
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New Bedford, MA
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New Bedford, MA
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New Bedford, MA
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New Bedford, MA
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New Bedford, MA
New Bedford's zoning ordinance Chapter 9 regulates off-street parking and driveways. Parking in front of public or private driveways is prohibited. Off-stree...
Side-by-side rule comparisons with other cities in Bristol County.
See how other cities in Bristol County handle adu rules.
See how New Bedford's adu rules rules stack up against other locations.
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