New England Additions, backed by Sordan Construction, offers pre-designed ADU builds across 25+ Greater Boston communities. Specializing in in-law suites and detached ADUs, they streamline permitting, budgets, and timelines for Massachusetts homeowners.
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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 space.
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Post and Beam Barns (Country Carpenters, Hebron CT) offers handcrafted post and beam kits ideal for ADUs, backyard cottages & in-law suites. With 50+ years experience, models include The Sterling, Hemingway & Barrett. Timeline: 4–12 months.
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Steveworks LLC completed a whole house remodel in Newton, redesigning the floor plan, replacing windows, siding, and roofing, and upgrading insulation. They also built an accessible ADU above a garage, featuring a full kitchen, curbless shower, and chair lift for aging-in-place living.
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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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Massachusetts homeowners can get permit-ready ADU plans starting at $800, delivered in days. Three tiers cover plans, cost estimates, and full custom design up to $3,100. Free ADU Starter Guide available.
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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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Turkel Design offers custom-designed accessory dwelling units (ADUs) using a prefab process. Highlights include expert cabinetry, smart storage, and high-quality finishes, ensuring ADUs feel purposeful and cohesive with the main residence.
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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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ADUs are now legal statewide in Massachusetts. Atlantic Property Development builds custom Accessory Dwelling Units on the North Shore, offering design, permitting, and construction services for detached, attached, and garage conversion ADUs.
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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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House Improvement LLC builds fully insulated ADUs with electricity and climate control, ideal for home offices or studios. They also construct storage sheds, carports, gazebos, and pergolas for diverse residential outdoor needs.
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Boston Deck Builders offers ADU construction in Greater Boston, including detached, attached, and interior units. Services cover planning, permitting, and build. Costs range from $150K–$400K+. Prefab options available. Compliant with Massachusetts ADU regulations.
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River City Construction is a Boston-based ADU contractor specializing in home additions, garage conversions, in-law suites & detached backyard cottages. They manage design, permitting & full construction under one roof.
read moreBlackstone, Massachusetts is a small town in Worcester County with a rich industrial heritage rooted in its historic textile mills and the Blackstone Canal. With a population of around 9,000 residents, the town features a mix of older New England-style homes and more modern residential properties. This unique housing stock presents both opportunities and challenges for ADU contractors in Blackstone, MA. Whether you're looking to convert an existing structure or build a new accessory dwelling unit, working with experienced local contractors is essential to navigating the town's specific requirements.
Before beginning any ADU project in Blackstone, it's critical to understand the local zoning bylaws. Blackstone falls under the jurisdiction of its own Zoning Board of Appeals and Planning Board. Massachusetts state law, particularly Chapter 40A, provides a framework for ADUs, and many municipalities including Blackstone have been updating their bylaws in response to the state's push for increased housing production. Key considerations for ADU construction in Blackstone include:
Given the character of Blackstone's housing stock, ADU contractors in the area frequently work on the following types of projects:
Hiring a licensed and experienced ADU contractor familiar with Blackstone, Massachusetts is one of the most important decisions you'll make. Local contractors understand the town's permitting process, have established relationships with the Blackstone Building Department, and are familiar with the soil conditions and infrastructure challenges common in this part of Worcester County. They can also help you navigate Massachusetts building codes, energy efficiency requirements under the Massachusetts Stretch Energy Code, and any historic preservation considerations that may apply to older properties near the town center.
Adding an ADU to your Blackstone property can increase its value, provide rental income, or create space for multigenerational living. Work with a qualified ADU contractor in Blackstone, MA who understands local regulations and can guide your project from permitting through final inspection efficiently and professionally.