Accessory Structures in Leominster, MA (2026)
3 verified accessory structures rules for Leominster, Massachusetts, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
ADUs are mandated by the MA Affordable Homes Act (Ch. 150, Acts of 2024, §8, effective Feb. 2, 2025). Leominster must allow one ADU by right on single-family lots. Max 900 sq ft or 50% of principal dwelling. Permits required.
Leominster ADU (Accessory Dwelling Unit) Rules
Some RestrictionsShed Rules
Sheds and accessory structures in Leominster require building permits under 780 CMR (MA State Building Code). Setbacks per Ch. 22 (Zoning). Structures with electrical/plumbing always require permits.
Leominster Shed & Outbuilding Rules
Some RestrictionsGarage Conversions
Garage conversions to habitable space require building permits under 780 CMR and zoning review under Ch. 22. Must meet MA building code habitable room standards. ADU conversions protected under 2024 state law.
Leominster Garage Conversion Rules
Some RestrictionsLooking for Worcester County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Leominster city rules.
Accessory Structures in Worcester County →