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Attached ADU
High Power Construction
3201 N Alameda St Suite E, Compton, CA 90222High 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.
read moreCustom ADU Builder
113 West Santa Fe Avenue, Fullerton, CA 92832Full-service ADU contractor offering design, permitting, and construction of detached ADUs, attached ADUs, JADUs, and garage conversions. Most builds complete in 3–5 months. Includes quartz countertops, tile showers, and luxury vinyl flooring. Rental prep support available.
read moreGuiding Builders
432 Elm Street, Portland, ME 04005Guiding Builders specializes in ADU construction, offering design, permitting, and building services. Projects include detached ADUs, garage conversions, in-law suites, granny flats, and casitas—custom-built to add value and living space.
read moreRomano Builders
14407 Gilmore Street, Van Nuys, CA 91401Romano Builders specializes in ADU construction in Los Angeles, offering detached, attached, garage conversion, and junior ADUs. Costs range $300–$600/sq ft, with rental income potential of $1,500–$4,000+/month.
read moreCaliber Construction & Remodeling
2645 Financial Court, San Diego, CA 92117As a female-owned business, we bring a fresh, inclusive approach to ADU design and construction, prioritizing comfort, functionality, and thoughtful details that make the space feel practical, welcoming, and easy to live in every day.
read moreA1 Home Builder
37056 Springfield Street, Palmdale, CA 93552A1 Home Builder (CA License #885624) is a Lancaster-based ADU contractor and residential builder serving the Antelope Valley since 2006, specializing in garage conversions, detached ADUs, and new single-family home construction.
read moreLutke Construction
PO Box 93, Eastwood, KY 40018Lutke Construction, based in Eastwood, Kentucky, offers expert construction services for new builds, renovations, and additions. Their monthly newsletter, "No Place Like Home," delivers tips, trends, and industry news to keep homeowners informed.
read moreBuchanan Land Use Consulting (BLUC)
225 Ramsey Road, Laytonville, CA 95454Buchanan Land Use Consulting (BLUC), based in Laytonville, CA, helps families and farmers navigate land development regulations. Services include ADU/JADU permitting, building permits, rezoning, conditional use permits, environmental compliance, and streambed alteration permits.
read moreIron Man Construction
930 North Doheny Drive, Los Angeles, CA 90069Accuracy Remodeling LLC
3144 G Street, Merced, CA 95340Accuracy Remodeling LLC, serving Merced, CA since 2013, offers new construction, remodeling, and ADU contracting for residential and commercial clients. Licensed, insured, and free estimates available.
read moreUNI Construction
1142 South Diamond Bar Boulevard, Diamond Bar, CA 91765UNI Construction builds detached and attached ADUs, handling site planning, structural engineering, and permit-ready drawings. Options include backyard cottages, granny flats, and in-law suites, all code-compliant and tailored to your property.
read moreOrange County Construction
1173 North Red Gum Street, Anaheim, CA 92806Granny Homes
16 Richards Drive, Roseville, CA 95678Granny Homes, founded by Jason Lewis, is a Sacramento-based ADU contractor specializing in attached ADUs, detached backyard cottages, and garage conversions. They offer full-service design, permitting, and construction for functional, affordable accessory dwelling units.
read moreThomas Custom Builders
9058 Euclid Avenue, Manassas, VA 20110Thomas Custom Builders designs & builds ADUs in Virginia, including detached units & in-law suites. Ideal for multigenerational living, rental income, or added property value. Experienced ADU contractor handling full construction, code compliance & planning.
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