ADU Builder — Southeastern Massachusetts
The Design-Build ADU Builder for Mansfield & Southeastern MA
Todd Design-Build is a licensed Massachusetts general contractor specializing in accessory dwelling units. We handle design, plans, permits, and construction in one coordinated process — across Norfolk, Bristol, and Plymouth counties.
ADU Types We Build in Massachusetts
Under the 2024 Massachusetts ADU zoning reform, most single-family lots can host an accessory dwelling unit by right. We design and build every common configuration.
Detached ADUs
Standalone units in the backyard — purpose-built for rental income, in-laws, or guest housing.
Attached ADUs
New construction additions with a separate entrance, kitchen, and full living space.
Garage Conversions
Convert existing garages into permitted ADUs — often the most cost-effective path.
Basement ADUs
Below-grade units with code-compliant egress, ceiling height, and separate utilities.
Why Homeowners Choose Todd Design-Build for Their ADU
Plans + Permits Handled
We develop the full plan set and manage local permitting from day one.
Single Point of Accountability
Design, subcontractors, schedule, and punch list — all coordinated by one builder.
Transparent Pricing
Builder's fee tied to square footage. Real numbers once plans are complete.
Licensed & Insured in MA
Massachusetts Construction Supervisor License #CS-115681. Fully insured.
Local to Mansfield
Based in Mansfield, MA. We know the towns, inspectors, and zoning bylaws.
Built for Rental Performance
Designed and finished to attract long-term tenants and hold value.
ADU Construction Across Southeastern Massachusetts
Our ADU clients are located across Norfolk, Bristol, and Plymouth counties, including:
Mansfield · Foxborough · Easton · Sharon · Wrentham · Franklin · Norwood · Stoughton · Walpole · Norfolk · Medfield · Medway · Plainville · Attleboro · North Attleborough · Raynham · Bridgewater · Plymouth · Hingham · Scituate · Needham · Wellesley · Westwood
Ready to Explore an ADU on Your Property?
Start with a property assessment. We'll evaluate zoning, setbacks, utilities, and site conditions before you commit a dollar to design.
Request Free ADU Assessment