ADU Requirements in Groton, MA
Middlesex County • Updated for 2024 MA ADU Law
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About ADUs in Groton, Massachusetts
Groton is located in Middlesex County, Massachusetts. Under the 2024 Affordable Homes Act, homeowners in Groton can now build accessory dwelling units (ADUs) up to 900 square feet by-right, meaning no special permit is required for compliant projects.
An ADU in Groton can be a detached backyard cottage, an attached addition, or a conversion of existing space like a basement or garage. These units are perfect for housing aging parents, adult children, or generating rental income.