ADU rules in Wakefield, MA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Wakefield adopted a local Accessory Dwelling Unit zoning bylaw at the May 2025 Annual Town Meeting to comply with Massachusetts' Affordable Homes Act (Chapter 150 of the Acts of 2024, Section 8), which took effect statewide February 2, 2025. The state law amends G.L. c. 40A and allows ADUs up to 900 sq ft (or 50% of the primary dwelling, whichever is smaller) by-right in all single-family zoning districts.
Under Section 8 of the Massachusetts Affordable Homes Act (effective February 2, 2025), every Massachusetts municipality must allow at least one ADU as of right in any zoning district that allows single-family residential use, with no special permit, variance, or owner-occupancy requirement permitted. The ADU may not exceed 900 sq ft or 50% of the gross floor area of the principal dwelling, whichever is smaller. The ADU must have a separate entrance and meet the State Building Code (780 CMR) for habitability. Wakefield is also subject to MBTA Communities Act Section 3A (Commuter Rail category), and its multi-family overlay was adopted at the November 2024 Special Town Meeting. The Wakefield Zoning Bylaw is undergoing recodification with the September 2025 Draft #11 containing the ADU provisions; municipalities may impose objective dimensional, parking (limited), and short-term-rental restrictions but cannot block ADUs by-right in single-family zones.
Unpermitted ADUs are violations of the Wakefield Zoning Bylaw and the State Building Code (780 CMR), enforced by the Wakefield Building Inspector with stop-work orders, fines up to $300 per day under G.L. c. 40A §7, and required after-the-fact permits or restoration. Operating an unpermitted short-term rental of an ADU may also violate Wakefield's local STR rules.
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