Norfolk County
ADU Builder in Foxboro, MA
High-value market with excellent ROI potential for ADUs and expansions.
Maximus ADU is a licensed Massachusetts general contractor providing accessory dwelling unit design, permits and turnkey construction throughout Foxboro. Whether you're building a detached backyard house, converting a garage, or adding an in-law suite, our local team handles every detail.
Services Available in Foxboro
Land Feasibility Study
Confirm what your lot can legally and physically support before you invest.
Permit Approval & Documentation
We handle every form, plan set, and meeting with your local building department.
Architectural Design
Custom ADU and addition designs tailored to your lot, lifestyle, and budget.
Structural Engineering
Stamped engineering plans that pass inspection on the first review.
Garage Conversion ADU
Turn your existing garage into a beautiful, income-ready living space.
Detached ADU (Backyard House)
Brand-new standalone backyard homes — designed, permitted, and built turnkey.
Attached ADU
Add a self-contained unit attached to your main home.
Home Addition
Expand your existing home with seamless additions.
Electrical, Plumbing & HVAC
Licensed in-house trades for every system in your ADU or addition.
Turnkey ADU Construction
One contract, one team — from concept to keys.
Construction Project Management
Already have plans? We'll run the build for you.
Rental Income & ROI Consulting
Maximize your ADU's rental income and long-term property value.
Why Build an ADU in Foxboro?
- • Strong rental demand and rising home values
- • MA statewide ADU bylaw makes permitting easier than ever
- • Excellent ROI for both rental income and resale
- • Solution for multigenerational living
Nearby Towns We Serve
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Free, no-pressure consultation