Provost Companies

20 Maple Street, Stoughton, MA 02072 46 miles

NorthEast Design + Build

2949 Hartford Avenue, Johnston, RI 02919 27.6 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.

ADU-PRO Corp.

121 Orchard Street, Millis, MA 02054 46.7 miles

Licensed 30 years in business Eco-Friendly

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.read more

DiStefano Brothers Construction

433 Main Street, Wakefield, RI 02879 38.2 miles

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.

ADU Building Systems, LLC

Norwell, MA 02061 41.9 miles

Prefab Specialist Eco-Friendly Luxury Builds

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.

Amex Construction

15 Industrial Way, Hanover, MA 02339 48.8 miles

Eco-Friendly

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.

Victory Construction Services Inc.

4 ashurst pl, Newport, RI 02840 1.2 miles

Licensed 15 years in business

Victory Construction Services Inc. builds ADUs in Rhode Island, including garage conversions, basement ADUs, and detached units. Family-owned since 2016, licensed, insured, with 15+ years experience and a 1-Year Workmanship Guarantee. Free estimates available.

Regulus Construction

36 West Street, Milford, MA 01757 47.6 miles

Licensed Eco-Friendly

Regulus Construction is a licensed ADU contractor serving MetroWest Massachusetts. They build detached backyard cottages, garage conversions, and in-law suites, managing design, permitting, and construction across 40+ towns.

Reagan Homes

197 Long Wharf Drive, Mystic, CT 06355 33.6 miles

New London’s unique blend of historic charm and modern living makes it an ideal location for thoughtfully designed ADUs. The city’s zoning regulations have adapted to accommodate these versatile structures, making now the perfect time to consider adding one to your property.

Keane Construction & Remodeling, LLC

167 Hixbridge Rd, Westport, MA 02790 16 miles

32 years in business

Keane Construction & Remodeling, LLC offers expert ADU construction in Westport, MA, with 32 years of experience. Services include site evaluation, custom design, permitting, and full build of detached or attached accessory dwelling units across Bristol County.

JB Cote Construction

25 Grand Avenue, Cumberland, RI 02864 32 miles

Eco-Friendly

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.

NE Tiny Homes

969 Waterman Avenue, East Providence, RI 02914 23.3 miles

Luxury Builds

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.

Avalon Building Systems

560 Turnpike Street, Canton, MA 02021 48.4 miles

Licensed 40 years in business Prefab Specialist

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.

Toensing Construction

Warren, RI 02885 17.4 miles

Licensed

Toensing Construction builds ADUs across Rhode Island, including detached units, in-law suites, garage conversions & basement apartments. Licensed & insured, they handle permitting, design & construction for multigenerational & flexible living spaces.

Salas Construction

60 Wheaton Avenue, Warwick, RI 27596 16.4 miles

Eco-Friendly Luxury Builds

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.

Other cities in Rhode Island

What you need to know

Building ADUs in Newport, Rhode Island's Historic Coastal City

Newport, Rhode Island is renowned for its stunning Gilded Age mansions, colonial architecture, and vibrant coastal culture. As one of America's most historically significant cities, Newport presents unique challenges and opportunities for ADU contractors. Much of Newport falls under strict historic district regulations overseen by the Newport Historic District Commission (HDC), meaning that any accessory dwelling unit construction must carefully respect the city's architectural heritage. Working with an experienced ADU contractor in Newport, RI who understands these local nuances is absolutely essential for a successful project.

Newport Zoning Rules and ADU Regulations

Newport's zoning ordinances govern where and how accessory dwelling units can be built. Under Rhode Island's statewide ADU legislation, municipalities are required to permit ADUs in areas zoned for single-family and multi-family use. Newport has aligned its local codes accordingly, but property owners must still navigate specific local requirements, including:

Because Newport's historic districts cover a significant portion of the city — including areas like the Point Neighborhood and Broadway — many homeowners will need HDC sign-off before breaking ground. Skilled Newport ADU contractors are well-versed in preparing the documentation and design plans required for HDC review.

Types of ADUs Popular in Newport

Given Newport's dense, older housing stock and limited lot sizes, certain ADU types tend to be more practical than others in this coastal city. The most common options include:

Carriage house conversions are particularly popular in Newport, given the city's wealth of historic outbuildings. A qualified ADU contractor in Newport can help homeowners transform these structures into fully functional living spaces while maintaining their historic character.

Why Hire a Local Newport ADU Contractor?

Hiring a local ADU contractor familiar with Newport, Rhode Island is critical. Local professionals understand the city's permitting timelines, HDC processes, coastal construction considerations, and relationships with municipal departments. Newport's proximity to the ocean also means contractors must account for coastal building standards, including wind resistance and moisture management. A knowledgeable contractor will ensure your ADU is built to last in Newport's demanding coastal environment while maximizing your property's value and rental potential.

ADU Contractors near Newport, RI