SRH Homes builds custom ADUs, including 500 SF 1-bed and 800 SF 2-bed units. Options include high-end finishes and mini-split HVAC. Financing via HELOC or cash-out refinance. Ideal for rental units, granny flats, or in-law suites.
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BlackDog Builders offers full-service ADU design/build solutions, handling design, permitting, and construction under one roof. Specializing in detached ADUs, backyard cottages, in-law suites, and granny flats, they back projects with a 3-year warranty.
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Amex Construction is a Hanover-based design-build ADU contractor serving Massachusetts' South Shore. They manage detached ADUs, barn conversions, and basement suites, handling design, permitting, septic upgrades, and construction under one contract.
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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.
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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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Stella Home Services is a Greater Boston ADU contractor specializing in basement apartments, garage conversions, in-law suites & home additions. They manage design, permitting & construction for fully functional accessory dwelling units.
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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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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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Post Woodworking builds custom Accessory Dwelling Units (ADUs), including detached ADUs and in-law suites. They offer flexible involvement, from full construction management to building only, ensuring seamless integration with your existing home.
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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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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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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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Studio Luz Architects designed a 1,180 sq ft attached ADU featuring solar power, wind energy, energy recovery systems, and water collection. The sustainable addition boosted property value while serving as a functional secondary living space.
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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 regulations.
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Spring Home Improvement offers expert ADU contractor services in Norfolk, MA. Family-owned since 2012, they handle design, permits, and construction with 10+ years of experience, transparent pricing, and a one-year labor warranty.
read moreNorwell, Massachusetts, is a charming town on the South Shore known for its historic character, scenic landscapes, and strong commitment to preserving its rural aesthetic. With a relatively low population density and a significant portion of land protected under conservation restrictions, finding the right ADU contractor in Norwell, MA means working with professionals who understand the town's unique zoning landscape and land use priorities. Accessory Dwelling Units (ADUs) have become increasingly popular here as homeowners look to add rental income, house aging family members, or simply maximize their property's value.
Before breaking ground, it's essential to understand that Norwell operates under its own Zoning Bylaws, administered through the Norwell Building Department and the Zoning Board of Appeals. Massachusetts passed the MBTA Communities Act, which encourages municipalities to allow multi-family housing near transit, and this has influenced how towns like Norwell approach ADU permitting. Homeowners and contractors must navigate local bylaws carefully, as requirements can include:
One of the most critical factors for ADU construction in Norwell is the town's reliance on private septic systems. Because Norwell is not connected to a municipal sewer system, any ADU project must account for the capacity of the existing septic system. A qualified ADU contractor will coordinate with a licensed Title 5 inspector and, if necessary, a septic engineer to determine whether the current system can handle the additional load or if an upgrade is required. This step can significantly affect both the timeline and budget of your ADU project.
Choosing the right ADU builder in Norwell, MA is crucial to a successful project. The best contractors will have direct experience working within Norwell's regulatory environment and strong relationships with local inspectors and town officials. Key qualities to look for include:
Whether you're planning a detached ADU, garage conversion, or in-law suite in Norwell, working with an experienced local contractor is the smartest first step. A knowledgeable ADU contractor will guide you through permitting, design, and construction while ensuring full compliance with Norwell's zoning bylaws and Massachusetts state law. Investing in an ADU in Norwell is not just a smart financial decision — it's a way to thoughtfully add housing in one of the South Shore's most desirable communities.