ADU Requirements in Amherst, MA
Hampshire County • Updated for 2024 MA ADU Law
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About ADUs in Amherst, Massachusetts
Amherst is located in Hampshire County, Massachusetts. Under the 2024 Affordable Homes Act, homeowners in Amherst 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 Amherst 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.