Find the best ADU builders and contractors across Massachusetts. Browse 36 cities with 155 verified builders ready to help with your accessory dwelling unit project.
Steveworks, LLC, is a worker-owned residential remodeling co-op serving Newton, MA, and the surrounding areas. Founded in 2000, our company is committed to quality, diversity, and sustainability.
Specializing in ADU construction and related services in Boston, MA.
Specializing in ADU construction and related services in Boston, MA.
Specializing in ADU construction and related services in Boston, MA.
Specializing in ADU construction and related services in Boston, MA.
Specializing in ADU construction and related services in Boston, MA.
Specializing in ADU construction and related services in Boston, MA.
Specializing in ADU construction and related services in Lynn, MA.
Specializing in ADU construction and related services in Fitchburg, MA.
Full-service ADU construction companies that handle everything from design to completion.
Specialists in converting existing garages into livable accessory dwelling units.
Companies that manufacture and install prefabricated accessory dwelling units.
Builders specializing in custom-designed ADUs tailored to your property and needs.
Builders focused on detached backyard cottages and guest houses.
Contractors specializing in attached or detached in-law suites and granny flats.
Firms offering integrated design and construction services for ADUs.
Builders specializing in tiny homes and compact living spaces.
Licensed general contractors experienced in ADU construction and renovation.
Companies that help navigate ADU permitting, zoning, and regulatory requirements.
Massachusetts is home to a growing ADU market with 155 builders across 36 cities. Accessory dwelling units are becoming increasingly popular in Massachusetts as homeowners look for ways to add living space, generate rental income, or provide housing for family members. Whether you're looking for a prefab ADU, custom-built backyard cottage, garage conversion, or in-law suite, our directory helps you find experienced local builders who understand Massachusetts's building codes and permit requirements.
ADU regulations vary by city and county in Massachusetts. Many municipalities have recently updated their zoning laws to make it easier to build ADUs. Our listed builders can help you navigate local regulations, obtain necessary permits, and complete your project on time and within budget.