Accessory Dwelling Units (ADUs) on Cape Cod

If you’ve been considering adding a guest house, in-law suite, or rental unit to your property, now is the time. Thanks to updated Massachusetts ADU regulations, it’s easier than ever to build an Accessory Dwelling Unit (ADU) on your Cape Cod property. At Clancy Construction, we specialize in custom ADU design and construction tailored to fit your goals and your property. 

Accessory Dwelling Unit #1

What Is an ADU?

An Accessory Dwelling Unit (ADU) is a secondary living space on the same lot as your primary home. Also known as a guest house, cottage, or backyard unit, an ADU is a fully independent space that includes a kitchen, bathroom, and separate entrance. ADUs can be:

  • Detached (standalone structure)
  • Attached (built onto the main home)
  • Garage conversions or basement apartments
Whether you’re looking to support multigenerational living or create passive rental income, an ADU offers flexible and functional space that adds long-term value to your home.

Why Build an ADU on Cape Cod Now?

Recent changes to Massachusetts zoning laws have made the ADU permitting process simpler across many Cape Cod towns. This opens up new possibilities for:

  • Multigenerational living solutions
  • Home offices, studios, or guest accommodations
  • Seasonal or year-round rental income