Attached ADU near Watertown, MA
Turnkey ADUs
435 Lancaster ST, Leominster, MA 01453
31.5 miles
Turnkey ADUs is a Leominster, MA ADU contractor offering modular, prefabricated accessory dwelling units across New England. Models range from $119K–$249,900. Massachusetts' 2024 Affordable Homes Act now allows ADUs up to 900 sq. ft. by right.read more
Provost Companies
20 Maple Street, Stoughton, MA 02072
16.8 miles
Boston Building Concepts
275 Main Street, Watertown, MA 02472
0.6 miles
ADUs are self-contained living spaces on existing properties. Legal in Massachusetts, local zoning rules apply. Boston Building Concepts is a Massachusetts ADU contractor offering full-service design, permitting, and construction of garage convers... read more
JB Cote Construction
25 Grand Avenue, Cumberland, RI 02864
31.8 miles
J. B. Cote Construction is an ADU contractor in Rhode Island & Massachusetts, specializing in detached ADUs, garage conversions, in-law suites & more. They manage design, permitting, zoning & energy-efficient construction from start to... read more
Boston Construct
1660 Soldiers Field Road, Boston, MA 02135
0.5 miles
Boston Construct is a full-service ADU contractor in Boston, MA, building basement conversions, garage conversions, detached backyard cottages, and in-law suites. They handle design, permitting, and construction for 1-3 family homeowners across Gr... read more
DiStefano Brothers Construction
433 Main Street, Wakefield, RI 02879
30.5 miles
DiStefano Brothers Construction builds ADUs in Rhode Island, including internal, attached, and detached units. They navigate RI regulations: by-right approval, size limits, occupancy rules, and long-term rental requirements for compliant accessory... read more
G.M. Roth Design Remodeling
12 Murphy Drive, Nashua, NH 03062
30.8 miles
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... read more
Republic Building Contractors
30 Log Bridge Road, Middleton, MA 01949
17 miles
Republic Building Contractors is a full-service ADU contractor in Massachusetts handling design, permits, and construction under one roof. They build detached, attached, and garage conversion ADUs, with projects averaging 6–9 months.
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ADU-PRO Corp.
121 Orchard Street, Millis, MA 02054
18.3 miles
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.
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Aureli Construction
Eugene Road, Medford, MA 02155
4.7 miles
An Accessory Dwelling Unit (ADU) is a self-contained living space on a residential property. Massachusetts law now makes ADU construction easier. Aureli Construction offers full-service ADU building, from zoning research to completed construction.... read more
Regulus Construction
36 West Street, Milford, MA 01757
24.4 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.
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WR Builders Inc
397 Elliot Street, Newton, MA 02464
5 miles
NorthEast Design + Build
2949 Hartford Avenue, Johnston, RI 02919
42.1 miles
NorthEast Design + Build offers ADU and in-law apartment construction across Massachusetts & Rhode Island. Services include detached backyard cottages, in-law suites, and attached additions. Serving Milford, Providence, Warwick & more.
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Allan Tran's Exterior Finish Work
20 Gravel Pit Road, Nottingham, NH 03290
48.6 miles
Allan Tran's Exterior Finish Work (AJT Properties) specializes in residential exterior services including deck construction, porch railing installation, storage structures, and CertainTeed siding. Known for reliable communication, on-budget delive... read more
John Crowley Construction Co
171 Mattakeesett St, Pembroke, MA 02359
27 miles
John Crowley Construction Co offers turnkey ADU construction on Massachusetts' South Shore, serving Pembroke, Plymouth, Hingham & more. Licensed (#114197), insured, 25+ years experience. Detached, attached, garage & basement ADUs available... read more
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What you need to know
Searching for top Attached ADU ADU Contractors in Watertown, 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 Watertown 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.
Watertown 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 Watertown, Massachusetts, and get started today.