ADU Contractors near Westborough, MA
Think ADU
123 Main Street, Worcester, MA 01608
9.6 miles
Think ADU is a California ADU contractor specializing in design, permitting, and construction of accessory dwelling units. Services include detached ADUs, garage conversions, JADUs, granny flats, and in-law suites for rental, family, or property value goals.
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House Improvement LLC
6 Garfield Avenue, Shrewsbury, MA 01545
4 miles
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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ADU Building Systems, LLC
Norwell, MA 02061
31.2 miles
ADU Building Systems LLC builds factory & site-built ADUs in Massachusetts, including detached, attached & converted units. Offering 10-year structural warranties, cost savings up to 50%, and full-service design to turnkey construction.
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Meetinghouse Builders
191 Depot Road, Hollis, NH 03049
30.4 miles
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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BuildX - Your Building & ADU Experts
24 Rockland Street, Hanover, MA 02339
41.6 miles
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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Core Remodeling Services
41 Boylston Street, Worcester, MA 01605
10.1 miles
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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Woodland Builders
195 Hanover Street, Hanover, MA 02339
41.5 miles
Woodland Builders is a full-service ADU builder serving South Shore, MA, including Hingham, Plymouth & Scituate. They manage design through construction, ensuring quality, compliance, and streamlined project management for accessory dwelling units.
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Acorn Deck House Company
852 Main Street, Acton, MA 01720
19.2 miles
Acorn Deck House builds luxury prefab ADUs in MA, featuring exposed beams & large windows. Options include 900 sq ft & 730 sq ft models. ADUs boost property value by 25–34% & generate rental income.
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Massachusetts Adu Plans
68 Harrison Avenue, Boston, MA 02111
28.4 miles
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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Mass ADU
144 Arlington Road, Woburn, MA 01801
27.7 miles
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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Coastal Modular Homes
271 Post Road, Wakefield, RI 02891
20.4 miles
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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Atlantic Property Development
444 Broadway Unit B #1069, Saugus, MA 01906
32.5 miles
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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JB Cote Construction
25 Grand Avenue, Cumberland, RI 02864
26 miles
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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ADU-PRO Corp.
121 Orchard Street, Millis, MA 02054
14.8 miles
ADU-PRO Corp. is a Massachusetts company specializing in ADU construction and project management. Services include permitting, consultation, and full construction supervision, helping homeowners add legal accessory dwelling units under MA's Affordable Homes Act.
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ADU-PRO Corp.
121 Orchard Street, Millis, MA 02054
14.8 miles
ADU-PRO Corp is a Massachusetts ADU specialist offering full-service construction, permitting, and project management. Led by licensed experts, they help homeowners build granny flats, in-law suites, and backyard cottages up to 900 sq ft.
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Other cities in Massachusetts
What you need to know
ADU Contractors in Westborough, MA: Building in a Historic and Growing Community
Westborough, 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.
Westborough Zoning Regulations for ADUs
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:
- Lot size requirements and minimum square footage thresholds
- Setback rules that determine how close a structure can be to property lines
- Maximum ADU size, typically limited to a percentage of the primary dwelling's square footage
- Owner-occupancy requirements that may apply in certain zoning districts
- Parking space provisions for the new unit
- Utility connection and septic system capacity considerations
Types of ADUs Built by Westborough Contractors
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:
- Attached ADUs: Added onto the existing home structure, sharing at least one wall
- Detached ADUs: Standalone backyard cottages or carriage houses built separately from the main home
- Garage Conversions: Transforming an existing attached or detached garage into a livable unit
- Basement Conversions: Converting an existing basement into a fully functional apartment
Why Hire a Local ADU Contractor in Westborough?
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.