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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Trusted Boston ADU builders specializing in attached, detached, and two-story accessory dwelling units. Stick-built construction ensures code compliance and lasting value. Services include design, permitting, and full project management for multigenerational living or rental income.
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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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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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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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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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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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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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Massachusetts ADUs are now legal by right statewide after 2024 legislation. MBA Builders offers full-service ADU construction across Greater Boston, with structured preconstruction planning and builds starting around $450/sq ft.
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New England Outdoor, a family-owned business in Methuen, MA, builds custom sheds, garages, pavilions, and ADUs across New England. Specializing in ADU construction, garage conversions, and in-law suites, they handle design, permits, and zoning guidance.
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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.
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MassDwell Solutions builds modular ADUs for homeowners, investors & developers. Models range from 470–892 sqft, starting at $164,500. Factory-built steel frame units include full warranties, energy-efficient features & 8–12 week installation.
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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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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.
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.