Salas Construction builds custom ADUs in Rhode Island, including attached, detached, and garage conversions. Projects range from $200K–$500K and take 6–12 months. Uses include rentals, guest suites, and multigenerational living.
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FiveTen Construction & Design is a Massachusetts ADU contractor offering design, permitting, and construction services. They build detached, attached, basement, and garage ADUs, ensuring full compliance with MA building codes and zoning regula... read more
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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DCCS Construction helps Boston homeowners navigate the ADU program, converting basements, attics, and existing spaces into independent rental units. Serving 1-3 family homes, they handle both architectural design and construction for full ADU proj... read more
Mass ADU is a Massachusetts-based ADU contractor offering full-service accessory dwelling unit construction. Services include free consultations, permitting, design, and build. They serve homeowners statewide with a clear 3-step process.
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Trust Contractors designs and builds ADUs, including detached units, garage conversions, basement ADUs, and in-law suites. Services cover zoning, permits, and construction, helping homeowners add rental income, family housing, or flexible living s... read more
Pro's Edge Small Homes is a licensed ADU contractor in MA & NH with 20+ years experience. They offer turnkey design, permitting & modular construction of granny flats, in-law suites & backyard cottages, including a free property evalua... read more
The Backyard Homes line of ADUs are manufactured in over a dozen production facilities and available in 48 states. After being constructed in one of our modern plants the unit is delivered to the project site for the builder to install.
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All City Remodeling Co. offers ADU construction, period molding installation, and beam ceiling paneling in Boston, MA, and North Shore communities including Hamilton, Salem, and Manchester-by-the-Sea.
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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
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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Brittivia Homes & Construction offers expert ADU construction in Middlesex, Worcester & Essex counties, MA. With 20+ years experience, they handle permits, garage conversions & in-law suites. Costs range $150–$300/sq ft.
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Trusted Boston ADU builders specializing in attached, detached, and two-story accessory dwelling units. Stick-built construction ensures code compliance and lasting value. Services include design, permitting, and full project management for multig... read more
Watertown, Massachusetts is one of Greater Boston's most densely populated and historically rich communities, situated along the Charles River just west of Cambridge. With a strong housing demand and limited available land, Accessory Dwelling Units (ADUs) have become an increasingly popular solution for homeowners looking to add living space, generate rental income, or house family members. Working with experienced ADU contractors in Watertown, MA is essential to navigating the city's unique zoning landscape and tight lot configurations.
Watertown has been actively updating its zoning bylaws in alignment with Massachusetts' broader housing initiatives. Under Massachusetts General Law Chapter 40A, Section 3, municipalities are required to allow ADUs by right in single-family zoning districts. Watertown's zoning ordinances reflect this, permitting attached and detached ADUs on qualifying residential properties. Key regulatory considerations include:
A qualified ADU contractor in Watertown brings expertise in local permitting, construction, and design that is critical for a successful project. Given the city's older housing stock — much of which dates back to the early 20th century — contractors must be adept at working with existing structures, updating aging utilities, and ensuring compliance with current building codes. Services typically provided include:
With median home values in Watertown exceeding $700,000 and rental demand driven by proximity to Boston, Cambridge, and major employers like Arsenal Yards and nearby biotech hubs, ADUs offer a compelling return on investment. Whether you're building a garage conversion, basement ADU, or detached backyard cottage, the right contractor will help you maximize your property's potential while staying fully compliant with Watertown's building department requirements.
When selecting an ADU contractor in Watertown, Massachusetts, look for professionals with verified local experience, strong references, and a clear understanding of Watertown's permitting process. A well-executed ADU project can add significant value to your property and provide flexible living solutions for years to come.