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
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.
read more
True Measure Construction, a Westborough, MA general contractor, specializes in full-service ADU construction—covering permits, site prep, and finishing—plus kitchen and bathroom remodeling for a complete home improvement solution.
read more
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 delivery, and durable craftsmanship.
read more
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.
read more
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.
read more
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
Hawthorn Builders offers end-to-end ADU construction, managing consultation, design, permitting, and building. As a detached ADU and garage conversion contractor, they complete accessory dwelling units in ~90 days with minimal disruption.
read more
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
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.
read more
Bradford Construction Management brings commercial-grade project management to every ADU we build across the North Shore. That means daily photo documentation so you always know what's happening on site, transparent pricing so there are no budget surprises, and a clear schedule with real milestones.
read more
New England Additions, backed by Sordan Construction, offers pre-designed ADU builds across 25+ Greater Boston communities. Specializing in in-law suites and detached ADUs, they streamline permitting, budgets, and timelines for Massachusetts homeowners.
read more
Auburndale Builders completed an 800 sq ft ADU in Newton, MA—a single-level, universally accessible in-law suite with full kitchen, bathroom, bedroom & living area, built in compliance with local zoning regulations.
read more
Kinstruct Tiny Homes is a Pacific Northwest contractor specializing in tiny homes and ADUs, including detached ADUs, backyard cottages, granny flats, and in-law suites built to maximize space and meet local codes.
read more
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 moreSalem, New Hampshire is one of the state's most dynamic communities, situated directly on the Massachusetts border along Route 28 and Interstate 93. Known for its strong retail economy anchored by the Rockingham Park area and a rapidly growing residential population, Salem has seen increasing demand for Accessory Dwelling Units (ADUs). Homeowners in Salem are turning to experienced ADU contractors to maximize their property value and address the region's tight housing market, particularly given the town's appeal to commuters heading into the Greater Boston area.
Before breaking ground, it's essential to understand Salem's local zoning ordinances. Salem operates under its own Zoning Ordinance, and ADUs are generally permitted as accessory uses in residential zones, but subject to specific conditions. Key regulatory points that qualified ADU contractors must navigate include:
New Hampshire state law, particularly RSA 674:71-73, provides a framework encouraging municipalities to allow ADUs, and Salem has aligned its local ordinances accordingly. However, working with a knowledgeable local ADU contractor ensures full compliance with both state and town-specific requirements.
Experienced ADU contractors in Salem, NH offer a variety of construction options tailored to the town's mix of colonial-style homes, ranch properties, and newer developments. Common ADU types include:
Hiring a local ADU contractor in Salem, New Hampshire offers significant advantages. Local professionals are familiar with the town's permitting timelines, building inspectors, and specific soil and frost-depth considerations common to Southern New Hampshire's climate. They also understand the architectural character of Salem neighborhoods, ensuring your ADU blends seamlessly with the existing structure.
With Salem's proximity to Massachusetts and its strong rental demand, a well-built ADU can generate substantial rental income or provide flexible multigenerational living space. ADU contractors in Salem, NH can help homeowners assess feasibility, manage permitting, and deliver high-quality construction that meets all local codes — making your ADU project a smart, long-term investment in one of New Hampshire's most sought-after communities.