ADU Of Massachusetts is a full-service ADU builder specializing in design, permitting, and construction of accessory dwelling units. Serving homeowners statewide, they build attached, detached, garage conversions, in-law suites, and backyard cottages.
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Boston ADUs add rental income ($1,500–$3,000/month), boost property value, and support multi-generational living. Boston ADU Builder offers detached, attached, garage, and basement conversions, handling design, permits, and construction in 8–12 months.
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Hawthorn Builders offers end-to-end ADU construction, managing consultation, design, permitting, and building. As a detached ADU and garage conversion contractor, they complete accessory dwelling units in ~90 days with minimal disruption.
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ADU Building Systems LLC builds factory & site-built ADUs in Massachusetts, including detached, attached & converted units. Offering 10-year structural warranties, cost savings up to 50%, and full-service design to turnkey construction.
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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.
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Bethoney Builders LLC is a South Shore residential contractor specializing in ADU construction, home additions, custom builds, and renovations. Services include in-law suites, garage conversions, finished basements, and structural repairs.
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South Coast & Associates builds custom ADUs in Southeastern Massachusetts. From detached backyard cottages to garage conversions and in-law suites, they handle design, permitting, and construction for single-family homeowners.
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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 finish.
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Avalon Building Systems builds custom modular homes and ADUs across the northeastern US. A VA Certified Builder, they offer turnkey services, Energy Star-compliant construction, and compact floor plans like in-law suites and backyard cottages.
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Massachusetts' new ADU legislation allows homeowners to build detached or attached accessory dwelling units. CZ Construction Management LLC helps with planning, permits, and construction of ADUs across Massachusetts, including Greater Boston.
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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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Keane Construction & Remodeling, LLC offers expert ADU construction in Westport, MA, with 32 years of experience. Services include site evaluation, custom design, permitting, and full build of detached or attached accessory dwelling units across Bristol County.
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Toensing Construction builds ADUs across Rhode Island, including detached units, in-law suites, garage conversions & basement apartments. Licensed & insured, they handle permitting, design & construction for multigenerational & flexible living spaces.
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Mattapoisett is a charming coastal town in Plymouth County, Massachusetts, known for its scenic harbor, historic shipbuilding heritage, and tight-knit community of approximately 6,000 residents. Building an Accessory Dwelling Unit (ADU) in Mattapoisett requires working with experienced ADU contractors who understand the town's unique zoning bylaws, coastal regulations, and the character-sensitive nature of this picturesque New England community. Whether you're looking to add a guest cottage, an in-law suite, or a rental unit, finding the right ADU contractor in Mattapoisett, MA is the critical first step.
Mattapoisett's zoning bylaws govern where and how ADUs can be constructed. Homeowners and contractors must navigate the town's Zoning Board of Appeals and comply with local bylaws that address lot size requirements, setbacks, and overall building footprint. Because portions of Mattapoisett fall within coastal flood zones and are subject to Massachusetts Coastal Zone Management (CZM) regulations, ADU projects near the waterfront may require additional permitting through the Conservation Commission. Key regulatory factors include:
A skilled ADU contractor serving Mattapoisett will handle the full scope of your project, from initial design consultation to final inspection. Given the town's relatively small size, local contractors with established relationships with Mattapoisett's Building Department can help streamline the permitting process significantly. Experienced contractors will assist with:
Given the town's mix of historic homes, waterfront properties, and suburban neighborhoods, the most common ADU types in Mattapoisett include detached backyard cottages, attached in-law suites, and garage conversions. Many homeowners are also exploring ADUs as a way to generate rental income or accommodate multigenerational living, both of which are growing trends across southeastern Massachusetts.
Investing in an ADU in Mattapoisett is a smart way to increase your property value and maximize your land use in one of Massachusetts' most desirable coastal communities. Work with a licensed and insured ADU contractor who has proven experience navigating local regulations and delivering high-quality results that complement Mattapoisett's distinctive character.