ADU Contractors near Somerville, MA
Top Notch Contracting
13 A Street, Burlington, MA 01803
10.3 miles
Top Notch Contracting is a Massachusetts ADU builder specializing in detached backyard cottages, garage conversions, in-law suites, and multigenerational spaces. They manage permitting, construction, and completion across Boston and MA.
read more
Pro's Edge Small Homes
27 Pillsbury Street, Georgetown, MA 01833
24.8 miles
Pro's Edge Small Homes is a licensed ADU contractor in MA & NH with 20+ years experience. They offer turnkey design, permitting & modular construction of granny flats, in-law suites & backyard cottages, including a free property evaluation.
read more
Beantown Builders, Inc.
181 North Montello Street, Brockton, MA 02302
21.3 miles
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+.
read more
Atlantic Property Development
444 Broadway Unit B #1069, Saugus, MA 01906
6.7 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.
read more
Alcantara Construction
407R Mystic Avenue, Medford, MA 02155
0.7 miles
Alcantara Construction is an experienced ADU contractor specializing in detached ADUs, garage conversions, JADUs, in-law suites, and granny flats. They guide homeowners through planning, permitting, and building accessory dwelling units efficiently.
read more
Massachusetts Adu Plans
68 Harrison Avenue, Boston, MA 02111
3.4 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.
read more
Platt Builders
109 Central Avenue, Ayer, MA 01432
26.7 miles
Platt Builders is a home remodeling company offering kitchen, bathroom, and whole-home renovations. They focus on custom design, quality craftsmanship, and clear communication, managing every project from planning to completion.
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.
read more
Heritage Modular Homes
16 Harrington Avenue, Shrewsbury, MA 01545
33.8 miles
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.
read more
Think ADU
123 Main Street, Worcester, MA 01608
36.6 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.
read more
Rockhouse Construction
22 Morgan Mill Road, Johnston, RI 02919
41.8 miles
Rockhouse Construction builds ADUs across Rhode Island, including Providence, Warwick, and Cranston. Options include detached, attached, garage, and basement conversions. Costs range from $60,000 to $480,000+, varying by size and finish level.
read more
NorthEast Design + Build
2949 Hartford Avenue, Johnston, RI 02919
45.2 miles
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.
read more
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.
read more
New England Outdoor
37 Oakland Avenue, Methuen, MA 01844
24.2 miles
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.
read more
Horizon ADU
77 King Street, Boston, MA 02122
7.1 miles
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.
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.