Accessory Structures in Leominster, MA (2026)
2 verified accessory structures rules for Leominster, Massachusetts, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Leominster allows one accessory dwelling unit by right in any Residential district under Article XV of the zoning ordinance, adopted February 25, 2026. An ADU is capped at 900 square feet or half the principal home's floor area, whichever is smaller, and generally needs one added off-street parking space.
Leominster Accessory Dwelling Unit Rules
Some RestrictionsLeominster Code of Ordinances § 22-90
90.1The owner of a principal residential dwelling may construct an accessory dwelling unit by right as an accessory residential use in a Residential district provided that each of the following criteria are met:90.1.1Only one accessory dwelling unit may be created on a lot with a principal residential structure.90.1.2Adequate provision must be made for the disposal of sewage, waste and drainage...
Shed & Carport Rules
In Leominster, Massachusetts, a detached shed or garage that is not used for human occupancy and is no more than one story tall must sit at least five feet off any side or rear lot line under City Code § 22-37. The same section caps how much of a required side or rear yard any accessory structure, or combination of them, may cover.
Leominster Shed & Accessory Structure Setbacks
Some RestrictionsLeominster Code of Ordinances § 22-37
37.2Accessory structures, such as sheds and garages, both detached or attached to the principal structure, when not used for human occupancy and not more than one story in height, must be set back at least five feet from any side or rear lot line. ... 37.3A detached accessory structure of one story may not be closer to the principal structure than ten feet. A detached accessory structure of mor...