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.
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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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Expert ADU builders serving Massachusetts homeowners. Services include detached ADUs, garage conversions, basement units & in-law suites. Fully permitted, code-compliant builds. Costs from $80K. Serving Boston, Cambridge, Worcester & statewide.
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Baystate Group Builders Inc offers residential remodeling services including basement finishing, bathroom renovations, deck construction, carpentry, and painting. Led by Victor, the team is known for professionalism, clear communication, and quality craftsmanship.
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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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Beantown Builders, Inc. is a Greater Boston ADU contractor offering full-service design, permitting, and construction. Projects include detached ADUs, garage conversions, and in-law suites, with budgets from $15,000 to $1M+.
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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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North Shore ADU Home Builders LLC builds custom ADUs up to 900 sq ft across Massachusetts. Services cover design, permits & construction. Rental income ranges $1,800–$3,500/month. Property values may rise $100K–$250K.
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Honorato Company offers a structured construction process in Boston, covering ADUs, garage conversions & renovations. From consultation to final walkthrough, they ensure transparency, permitting, design, and clear communication throughout.
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Ruhan General Contracting LLC builds home additions and ADUs in North Attleboro, MA. Services include room additions, in-law suites, second-story additions, and detached ADUs, covering permits, design, and finish carpentry throughout Massachusetts and Rhode Island.
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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.
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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 dwelling units.
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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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Walczak Design and Build LLC is a trusted ADU contractor on Massachusetts' North Shore, serving Ipswich, Newburyport, Beverly & more. They offer full-service ADU design, permitting, and construction with transparent planning and expert project management.
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Planning an ADU in Massachusetts? Costs range from $250–$500+ per sq ft. State law now allows ADUs by right on single-family lots. Learn about permits, the Stretch Energy Code, and working with a qualified ADU contractor in Greater Boston.
read moreWestborough, Massachusetts is a vibrant town in Worcester County known for its rich history, strong tech industry presence, and well-preserved natural landscapes including the Westborough State Park and Lake Chauncy. As housing demand continues to grow in this desirable MetroWest community, many homeowners are turning to ADU contractors in Westborough, MA to add Accessory Dwelling Units to their properties. Whether you're looking to house aging parents, generate rental income, or add flexible living space, working with experienced local ADU contractors is essential to navigating Westborough's specific zoning and building requirements.
Before breaking ground, homeowners and ADU contractors in Westborough must carefully review the town's zoning bylaws. Westborough falls under Massachusetts General Law Chapter 40A, and the state's 2021 ADU legislation encourages municipalities to allow accessory dwelling units by right in single-family zones. However, local regulations still govern key aspects of ADU construction, including:
Skilled ADU builders in Westborough, Massachusetts are experienced in constructing several types of accessory dwelling units suited to the town's mix of colonial-style homes, newer subdivisions, and larger residential lots. Common ADU types include:
Hiring a local ADU contractor in Westborough, MA offers significant advantages over working with a general contractor unfamiliar with the area. Local professionals understand the town's permitting process through the Westborough Building Department, have established relationships with local inspectors, and are familiar with the soil conditions, climate considerations, and architectural styles common in the region. This local expertise helps keep your project on schedule and within budget.
When selecting an ADU construction company in Westborough, look for contractors who are fully licensed in Massachusetts, carry proper liability insurance, provide detailed written contracts, and have a proven portfolio of completed ADU projects in the MetroWest area. Investing in the right contractor ensures your ADU is built safely, legally, and to the highest quality standards.