ADU Contractors

NW Finishing is a Seattle-area ADU contractor offering full-service accessory dwelling unit design and construction. Serving Bellevue, Kirkland, Redmond, Renton, and more, they handle permits, planning, and builds for detached, cottage, and prefab ADUs.

Coastal Haven is a Tampa ADU contractor handling zoning, permits, design, and construction. They build garage conversions, backyard cottages, and detached ADUs within approved overlays, ensuring full Florida Building Code compliance.

Kling Brothers Builders specializes in home additions, from extra bedrooms to master retreats. They handle planning, site evaluation, exterior matching, and construction, ensuring seamless integration and strong ROI. Free consultations available.

Home Quality Remodeling offers full-service ADU construction in New Jersey, including detached ADUs, garage conversions, in-law suites, and granny flats. They handle design, permitting, and building to boost property value and add flexible living space.

CityPaks is a minority & woman-owned ADU builder in the San Francisco Bay Area specializing in affordable, sustainable backyard cottages & detached ADUs using SIP panels. No crane needed, no sales tax, pre-approved in San Jose.

CoCreations Construction & Design is a Durham, NC firm serving the Triangle area, specializing in custom homes, ADUs, and large-scale renovations. They guide clients from design to completion with expert craftsmanship and personalized solutions.

Neil Kelly Portland offers full ADU design and build services, including detached units, garage conversions, and basement conversions. They handle zoning, permits, and custom design for functional, energy-efficient accessory dwelling units.

Specialist ADU builder constructing durable, eco-friendly homes from repurposed shipping containers. Hurricane, earthquake & tornado resistant, IBC-compliant. Models range from 208–1760 sq ft. Custom designs available for backyard cottages & granny flats.

Montana ADU Company, based near Stevensville, MT, builds custom site-built ADUs including guest houses, cabins & rental units. Serving Bitterroot Valley & Missoula with quality, locally crafted accessory dwelling units.

Hendren Custom Homes builds ADUs in Valparaiso & Porter County, NW Indiana. From detached backyard cottages to garage conversions, costs range $40K–$130K with 4–8 month timelines. Expert guidance on zoning, permits & custom design.

Estate ADU offers a clear 3-phase ADU development process: site assessment, design & approvals, and construction. As a trusted ADU builder, they deliver permitted, quality accessory dwelling units with transparent pricing and expert oversight.

Bradley Knapp Homes is a leading ADU builder in South Carolina with 26+ years of experience. They offer custom homes, detached ADUs, pool houses, and home offices with full permitting support, financing options, and a 10-year workmanship warranty.

As a full-service construction company focused exclusively on ADUs and multifamily housing, we guide you through every step—from initial concept to final walkthrough. Whether you're adding a high-quality ADU to your property or developing affordable housing solutions for your community, we deliver spaces that are functional, personal, and built to last.

MGMW Remodeling INC is a Los Angeles ADU contractor specializing in accessory dwelling units. Services include detached ADU construction, garage conversions, architectural design, permitting, and full project management from planning to completion.

Next Level ADU Builders, serving Los Angeles, Riverside & Pico Rivera since 1997, specializes in ADU construction—detached units, granny flats & casitas—plus HVAC, remodeling & roofing, with financing options available.