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 conversions, in-law suites, and detached ADUs.
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Heritage Modular Homes builds ADUs across MA, RI, CT & NH. With 40+ years experience, they offer custom ADU design, modular installation & in-law suites, backed by a 10-year warranty & free consultations.
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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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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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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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Meetinghouse Builders offers custom ADU design & construction in Hollis, NH. Services include detached builds, garage conversions, basement ADUs & home additions. Features 3D renderings, style guides & full construction documents.
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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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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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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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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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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 project management.
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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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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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BuildX is a premier ADU builder in Southeastern Massachusetts with 40+ years of experience and $450M+ in projects. Offering custom stick-built ADUs, a 100-day build guarantee, and transparent pricing starting from $254,540.
read moreNorth Andover, Massachusetts, is a charming town with deep colonial roots, a vibrant town center, and a mix of historic properties and newer residential developments. As housing demand continues to grow in Essex County, many homeowners are turning to ADU contractors in North Andover, MA to add accessory dwelling units to their properties. Whether you own a historic home near the Town Common or a newer property in one of North Andover's residential neighborhoods, a well-built ADU can significantly increase your property's value and provide additional rental income or multigenerational living space.
Before breaking ground, it's essential to understand that ADU construction in North Andover is governed by local zoning bylaws as well as Massachusetts state law. Under Massachusetts General Law Chapter 40A, Section 3, municipalities are required to allow ADUs in single-family zoning districts, which has opened new opportunities for homeowners. However, North Andover's local zoning bylaws may still impose specific requirements that your ADU contractor must navigate carefully, including:
Experienced ADU builders in North Andover are skilled in constructing a variety of accessory dwelling unit types suited to the town's diverse housing stock. Given the prevalence of larger colonial and cape-style homes in the area, basement conversions and attached additions are particularly popular. Common ADU types include:
Hiring a local ADU contractor familiar with North Andover is a critical advantage. Local professionals understand the town's permitting process through the North Andover Building Department, have established relationships with local inspectors, and are familiar with the specific soil conditions and utility infrastructure common in the area. They can also help ensure your ADU design is sensitive to the town's historic and architectural character, which is especially important near protected historic districts.
When searching for the best ADU contractors in North Andover, Massachusetts, look for licensed and insured professionals with proven experience in Essex County, strong local references, and a clear understanding of both state ADU legislation and North Andover's local bylaws. A qualified contractor will guide you from initial design through final inspection, ensuring your project is completed on time, on budget, and fully compliant.