Basement Conversion

Dakota Cabins LLC, Fargo's trusted ADU builder since 1991, specializes in detached ADUs, garage conversions, basement units & attached suites. Full permitting support, custom design & code-compliant construction for rental income or family... 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.

Warrior Construction (license #BC-34373) builds ADUs and ohana units across O'ahu, including detached cottages, garage conversions, and attached units. Costs range from $150K–$600K+. They manage design, permitting, and construction end-to-end.read more

At SpecLand, we bring expertise and innovation to home renovations, with a focus on maximizing both functionality and value in New York’s unique urban landscape. Whether you’re looking to expand your home, create rental opportunities, or updat... read more

Coastlinez offers ADU design and construction in Southwest Florida, handling permits, plans, and building. Services include garage conversions, in-law suites, and detached units, with financing options and full contractor support available.

Green Bee Construction Inc builds high-end ADUs, custom homes, additions, and renovations for Nevada County homeowners who want quality they can trust. Based in Grass Valley, we bring twenty years of local permitting expertise — including septic... read more

An ADU (accessory dwelling unit) is a secondary dwelling on a single-family lot. Types include basement apartments, garage conversions & detached cottages. Costs vary by size, design, permits & materials. Professional ADU contractors ensur... read more

JDI Construction is a Portland-based ADU contractor offering full design-build services for detached, attached, garage conversion, basement, above-garage, and interior ADUs, including permits and eco-friendly practices.

Humboldt ADU is a Humboldt County program helping homeowners build Accessory Dwelling Units (ADUs) like granny flats or backyard cottages to boost affordable housing. It offers guides on types, permits, financing, and construction.

Linnius Construction builds ADUs across Southern & Central Oregon, including Bend, Medford & Ashland. Specializing in detached ADUs, garage conversions & in-law suites, they help homeowners add value & flexible living space.

Giant Builders Seattle is a Kent, WA general contractor with 20+ years of experience offering ADU construction, garage conversions, kitchen & bathroom remodeling, room additions, roofing, deck building, and more.

Four Brothers Design + Build specializes in Accessory Dwelling Units (ADUs) across DC, Northern Virginia & Maryland. Services include basement apartments, garage conversions, in-law suites & detached ADUs.

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.

Zenith Design + Build is a full-service home renovation company offering kitchen remodeling, basement finishing, flooring, sunrooms, and more. Known for quality craftsmanship, 3D design planning, on-time delivery, and clear communication throughou... read more

Dream Build Services is a full-service ADU contractor in Fremont, CA, offering detached ADUs, garage conversions, basement conversions, and JADUs. Services include design, permits, electrical, plumbing, HVAC, and solar integration across the East ... read more