Regulus Construction

36 West Street, Milford, MA 01757 9.9 miles

Regulus Construction is a licensed ADU contractor serving MetroWest Massachusetts. They build detached backyard cottages, garage conversions, and in-law suites, managing design, permitting, and construction across 40+ towns.

Steveworks LLC

108 Cabot Street, Newton, MA 02458 21.7 miles

Eco-Friendly

Steveworks LLC completed a whole house remodel in Newton, redesigning the floor plan, replacing windows, siding, and roofing, and upgrading insulation. They also built an accessible ADU above a garage, featuring a full kitchen, curbless shower, and chair lift for aging-in-place living.

Bradford Construction Management

145 South Main Street, Haverhill, MA 01835 43.3 miles

Bradford Construction Management brings commercial-grade project management to every ADU we build across the North Shore. That means daily photo documentation so you always know what's happening on site, transparent pricing so there are no budget surprises, and a clear schedule with real milestones.

JFC Pros Construction

292 Main Street, Northborough, MA 01532 3.1 miles

Licensed In-House Architect In-House Engineer

JFC Pros Construction is a licensed general contractor in Massachusetts offering design, commercial, and new construction services. Their team includes architects, engineers, and tradespeople ensuring full code compliance with NFPA, ADA, IBC, IRC, and local building codes.

Core Remodeling Services

41 Boylston Street, Worcester, MA 01605 10.1 miles

13 years in business Eco-Friendly

Core Remodeling Services has built ADUs and in-law suites across Central Massachusetts since 2012. They handle zoning, permits, design, and construction. Projects range from $150K–$400K+, take 6–8 months, and are backed by a 5-year warranty.

G.M. Roth Design Remodeling

12 Murphy Drive, Nashua, NH 03062 32.2 miles

Licensed 39 years in business

G.M. Roth Design Remodeling offers full-service ADU construction in southern NH and northeastern MA. With 40+ years of experience, they handle zoning, design, permitting, and build. CAPS-certified, serving Nashua, Manchester, Chelmsford & more.

WR Builders Inc

397 Elliot Street, Newton, MA 02464 19.7 miles

ADU-PRO Corp.

121 Orchard Street, Millis, MA 02054 14.8 miles

Licensed 30 years in business Eco-Friendly

ADU-PRO Corp is a Massachusetts ADU specialist offering full-service construction, permitting, and project management. Led by licensed experts, they help homeowners build granny flats, in-law suites, and backyard cottages up to 900 sq ft.read more

Rockhouse Construction

22 Morgan Mill Road, Johnston, RI 02919 29.9 miles

Luxury Builds

Rockhouse Construction builds ADUs across Rhode Island, including Providence, Warwick, and Cranston. Options include detached, attached, garage, and basement conversions. Costs range from $60,000 to $480,000+, varying by size and finish level.

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What you need to know

Searching for top Attached ADU ADU Contractors in Westborough, Massachusetts? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).

Working with a qualified Attached ADU ADU Contractor in Westborough ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Attached ADU professionals can guide you through every step.

Westborough homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Attached ADU experts featured here bring local expertise and proven experience to help make your project a success.

Browse our listings to find the best Attached ADU ADU Contractors in Westborough, Massachusetts, and get started today.

Attached ADU near Westborough, MA