ADU Contractors near Somerville, MA
NE Tiny Homes
969 Waterman Avenue, East Providence, RI 02914
41.7 miles
NE Tiny Homes is a full-service ADU builder across the US, offering custom tiny homes, garage conversions, and ADUs from 352 sq ft. Transparent pricing, permit handling, and move-in-ready builds for rental income or in-law suites.
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MassDwell Solutions
109 Highland Ave, Suite 203, Needham, MA 02494
8.4 miles
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 instal... read more
BuildX - Your Building & ADU Experts
24 Rockland Street, Hanover, MA 02339
23.6 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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Brittivia Homes & Construction
913 Northfield Road, Lunenburg, MA 01462
36.3 miles
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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Salas Construction
60 Wheaton Avenue, Warwick, RI 27596
49 miles
Salas Construction builds custom ADUs in Rhode Island, including attached, detached, and garage conversions. Projects range from $200K–$500K and take 6–12 months. Uses include rentals, guest suites, and multigenerational living.
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Honorato Company
34 Commerce Way, Woburn, MA 01801
8.3 miles
Honorato Company offers a structured construction process in Boston, covering ADUs, garage conversions & renovations. From consultation to final walkthrough, they ensure transparency, permitting, design, and clear communication throughout.
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ADU-PRO Corp.
121 Orchard Street, Millis, MA 02054
21.6 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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Coastal Modular Homes
271 Post Road, Wakefield, RI 02891
33.8 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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Boston Construct
1660 Soldiers Field Road, Boston, MA 02135
3.4 miles
Boston Construct is a full-service ADU contractor in Boston, MA, building basement conversions, garage conversions, detached backyard cottages, and in-law suites. They handle design, permitting, and construction for 1-3 family homeowners across Gr... read more
Design 1 Kitchen & Bath
363 Great Road, Bedford, MA 01730
10.4 miles
Design 1 Kitchen & Bath designs and builds ADUs in Massachusetts, handling consultation, design, permitting, and construction. ADUs add rental income, multigenerational living space, and property value for Greater Boston homeowners.
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Turkel Design
1060 Broadway, Somerville, MA 02144
1.4 miles
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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Allan Tran's Exterior Finish Work
20 Gravel Pit Road, Nottingham, NH 03290
46.8 miles
Allan Tran's Exterior Finish Work (AJT Properties) specializes in residential exterior services including deck construction, porch railing installation, storage structures, and CertainTeed siding. Known for reliable communication, on-budget delive... read more
DCCS Construction
74 Howland Street, Boston, MA 02121
5.4 miles
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 proj... read more
G.M. Roth Design Remodeling
12 Murphy Drive, Nashua, NH 03062
31 miles
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... read more
ADU Builders of MA
807 Massachusetts Avenue, Boston, MA 02118
2.6 miles
Expert ADU builders serving Massachusetts homeowners. Services include detached ADUs, garage conversions, basement units & in-law suites. Fully permitted, code-compliant builds. Costs from $80K. Serving Boston, Cambridge, Worcester & state... read more
Other cities in Massachusetts
What you need to know
ADU Contractors in Somerville, MA: Building in One of the Most Densely Populated Cities in the US
Somerville, Massachusetts is one of the most densely populated cities in the entire United States, making Accessory Dwelling Units (ADUs) an increasingly important housing solution for homeowners looking to maximize their property's potential. With its vibrant neighborhoods like Davis Square, Union Square, and Inman Square, Somerville presents unique opportunities and challenges for ADU contractors. Whether you're looking to add a basement apartment, a garage conversion, or a detached backyard cottage, working with experienced ADU contractors in Somerville, MA is essential to navigating the city's specific zoning and building requirements.
Somerville Zoning and ADU Regulations
Somerville operates under its SomerVision 2040 comprehensive plan, which actively encourages increased housing density. Massachusetts state law, particularly Chapter 40A, was amended to require municipalities to allow ADUs by right in single-family zoning districts. Somerville has aligned its local ordinances accordingly, but there are still important local rules that ADU contractors must follow:
- Owner-occupancy requirements may apply depending on the type of ADU being constructed.
- ADUs are generally limited in size, often capped at 900 square feet or a percentage of the primary dwelling's square footage.
- Setback requirements and lot coverage rules must be carefully reviewed, especially given Somerville's small lot sizes.
- Parking requirements may be waived for ADUs located near public transit, which is common in Somerville given its proximity to the MBTA Green and Red Lines.
- All ADU projects must comply with the Massachusetts State Building Code (780 CMR) and require proper permitting through the Somerville Inspectional Services Department.
Types of ADUs Commonly Built in Somerville
Given the city's urban character and older housing stock, ADU contractors in Somerville most frequently work on the following project types:
- Basement ADUs: Converting existing basement space into a legal dwelling unit is popular in Somerville's older triple-decker and Victorian-era homes.
- Attached ADUs: Adding a new living space attached to the existing home, often through a rear addition.
- Detached ADUs: Building a separate structure in the backyard, though lot size constraints can make this challenging in Somerville.
- Internal ADUs: Converting an existing room or floor within the home into a self-contained unit.
Why Hire a Local ADU Contractor in Somerville?
Hiring a local ADU contractor familiar with Somerville's building department and zoning board can save you significant time and money. Local contractors understand the nuances of working with the city's older infrastructure, including aging electrical systems, limited lot access, and historic preservation considerations in certain neighborhoods. They also have established relationships with local inspectors and are up to date on the latest changes to Somerville's ADU ordinances.
Investing in an ADU in Somerville can provide rental income, multigenerational living options, or increased property value in one of Greater Boston's most sought-after communities. Contact a qualified Somerville ADU contractor today to explore your options.