Detached ADU

An ADU (Accessory Dwelling Unit) is an independent living space on a single-family property, complete with kitchen, bathroom & private entrance. Types include detached units, garage conversions & basement apartments. Ideal for rental incom... read more

Easthope Design is a Fort Collins ADU design firm led by architect Richard Esteb. Specializing in custom ADUs, garage conversions & granny flats across Northern Colorado, they handle design, permits, zoning & construction supervision.

Bellingham ADU Builders offers full-service ADU construction in Whatcom County, including detached and attached ADUs. Costs range from $200K–$550K+. Permits included. Free 48-hour feasibility study available. HB 1337 allows up to two ADUs per lo... read more

Accessory Dwelling Units are a great way for Mississippi Avenue homeowners to make the most of their property. Whether you need extra space for family, a home office, or a way to generate rental income, our team at Home Services Plus handles every... read more

Sioux Falls Home Remodeling builds custom ADUs in Sioux Falls, SD. Services include detached ADUs, garage conversions, granny flats & in-law suites. Costs range from $25K–$180K+. Serving Minnehaha & Lincoln Counties.

Virginia ADUs—backyard cottages, garage conversions, basement apartments—add living space or rental income. Premier Structures builds compliant ADUs statewide, navigating local zoning, permits, and size rules (250–1,200 sq ft).

Constructum is an Arizona-based design and build firm with 23+ years of experience serving Scottsdale, Paradise Valley, and Phoenix. Specializing in ADUs, casitas, guesthouses, custom homes, and renovations, they manage permitting, design, and con... read more

High Power Construction, based in Compton, CA, offers ADU contractor services including detached units, garage conversions, granny flats, and in-law suites. Serving the greater Los Angeles area with quality craftsmanship.

Millan Construction builds custom ADUs in San Diego, offering full-service design, permitting, and construction. With 14+ years of experience, they deliver compliant, high-quality accessory dwelling units that boost property value and rental incom... read more

Avead is an ADU contractor offering full-service accessory dwelling unit construction, including attached, detached, junior ADUs, garage conversions, and custom builds. With 20+ years of experience, transparent pricing, and a 5-year warranty.

9 Builders is a Bay Area ADU contractor offering full-service design, permits & construction. Specializing in detached ADUs, garage conversions & additions, costs range $150K–$350K, taking 8–14 months to complete.

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 delive... read more

Vitalize Build is a Bay Area ADU contractor offering design and construction services for detached ADUs, garage conversions, and in-law suites. They provide preapproved, predesigned, and custom layouts ranging from 238 to 1,200 sq ft.

Clarkbuilt is a Portland, Oregon residential contractor specializing in custom homes, remodels, additions, and ADU construction. Founded in 2006, they offer expert accessory dwelling unit building, custom cabinetry, and serve clients across Oregon... read more

Burton Builders LLC is a trusted construction company specializing in ADU construction, single-family, multifamily, and commercial builds. Known for quality workmanship and client-focused service, they deliver expert results on every project.