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.
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Bethoney Builders LLC is a South Shore residential contractor specializing in ADU construction, home additions, custom builds, and renovations. Services include in-law suites, garage conversions, finished basements, and structural repairs.
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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 acro... read more
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 & fle... read more
Ron Morgan Construction is a Massachusetts ADU contractor offering full-service accessory dwelling units from 300–900 sq ft. Licensed under the 2024 Affordable Homes Act, they handle design, permits & construction. ADUs start at $90,000.
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Baystate Group Builders Inc offers residential remodeling services including basement finishing, bathroom renovations, deck construction, carpentry, and painting. Led by Victor, the team is known for professionalism, clear communication, and quali... read more
John Crowley Construction Co offers turnkey ADU construction on Massachusetts' South Shore, serving Pembroke, Plymouth, Hingham & more. Licensed (#114197), insured, 25+ years experience. Detached, attached, garage & basement ADUs available... 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.
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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 contrac... read more
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.
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Ruhan General Contracting LLC builds home additions and ADUs in North Attleboro, MA. Services include room additions, in-law suites, second-story additions, and detached ADUs, covering permits, design, and finish carpentry throughout Massachusetts... read more
Upgrading your home with professional renovations can dramatically enhance both its functionality and appeal, creating spaces tailored to meet your unique lifestyle. Whether you’re aiming to increase energy efficiency, improve layout flow, or re... read more
South Coast & Associates builds custom ADUs in Southeastern Massachusetts. From detached backyard cottages to garage conversions and in-law suites, they handle design, permitting, and construction for single-family homeowners.
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Walsh Builders offers custom ADU construction in Blackstone, Milford, Wellesley, and nearby Massachusetts areas. Services include design, permitting, construction, and finishing for in-law suites, backyard cottages, and detached accessory dwelling... read more
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'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.
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.
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.