ADU and Small Home Regulations in Massachusetts

The Affordable Home Act Passed!!! While we are updating our local rules pages to reflect the new law,

you can check out the new Mass.gov webpage with additional details and FAQ’s.

And remember to join our Mailing List to stay up to date on everything ADU related in MA.

The first step is knowing the rules

If you are interested in installing a granny flat (accessory dwelling unit), your first step is to review your local rules. Each town has differing rules relating to which zones ADUs can be installed in, maximum size, or rental restrictions.

Find your city’s ADU Rules:

Can’t find your city? We’ll research it.

Western Mass Cities That Allow Detached ADUs:

Cape Cod Cities That Allow Detached ADUs:

Greater Boston Cities That Allow Detached ADUs:

Below is the full list of cities and town we’ve evaluated in Massachusetts.

Don’t see your city? We’ll research it.