
Specializing in ADU construction and related services in Boston, MA.
Looking for the best ADU permit services in Boston, Massachusetts? Our directory features 101 vetted adu permit services serving the Boston area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.

Specializing in ADU construction and related services in Boston, MA.

Specializing in ADU construction and related services in Boston, MA.

North Shore ADU Home Builders. Construction Company. Closed · Opens 7 am Mon

Specializing in ADU construction and related services in Boston, MA.

Fidelity Construction. Construction company. 1089 Commonwealth Ave Suit 319, Boston, MA 02215, United States

ID Construction. Construction company. 1028 Commonwealth Ave Office, Boston, MA 02215, United States

Specializing in ADU construction and related services in Boston, MA.

Specializing in ADU construction and related services in Boston, MA.

NS Builders. Custom home builder. 840 Summer St Suite 206, Boston, MA 02127, United States

Unite Contractors. General contractor. 12 Sackville St, Boston, MA 02129

Specializing in ADU construction and related services in Boston, MA.

A D Construction LLC. General contractor. 1750 Washington St b1, Boston, MA 02118, United States

United Developers. General contractor. 361 Newbury St, Boston, MA 02115

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.

Abacus. General Contractor. 190 Old Colony Ave, Boston, MA 02127, United States

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.
Boston is one of the top markets for accessory dwelling units in Massachusetts. With growing demand for affordable housing, ADU construction in Boston offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of adu permit services in Boston helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
ADU construction costs in Boston typically range from $150,000 to $350,000 depending on size, design, and finishes. Garage conversions are generally less expensive ($80,000–$150,000), while custom-built detached ADUs can cost more. Get free quotes from our listed adu permit services to compare prices.
Yes, ADU construction in Boston requires building permits. Massachusetts has specific ADU regulations, and local zoning laws may have additional requirements. Our listed builders can help you navigate the permitting process.
ADU construction timelines in Boston typically range from 4–12 months, depending on the project type. Prefab ADUs can be installed in 2–4 months, while custom builds may take 8–12 months including design and permitting.