ADU Contractors

Alloy Workshop is a design-build firm specializing in accessory dwelling units (ADUs). They manage the full process from design to construction, delivering functional small homes ideal as rental units, guest rooms, or in-law suites.

A+ Construction & Remodeling is a top-rated ADU contractor in Greater Sacramento with 30+ years experience. They offer custom ADUs, garage conversions, granny flats & more, managing all permits and zoning compliance. CSLB Licensed #1007869.

Quantum Realm Construction builds custom ADUs in Illinois—backyard cottages, in-law suites & granny flats. Costs range $80K–$200K, with builds completed in 3–6 months. Ideal for rental income or extra living space.

Benavides Builders Inc is a trusted ADU contractor specializing in detached & attached ADUs, garage conversions, JADUs, and hillside builds. They offer single & two-story units, granny flats, in-law suites, and casitas for residential properties.

Mountain West Modulars sells tiny homes & modular cottages from brands like Platinum Cottages, Cavco, Champion, and Woodland Park. They offer 40+ models suited for primary residences, ADUs, granny flats, and backyard cottages.

Coronado Construction builds Accessory Dwelling Units (ADUs) in San Diego, CA. From garage conversions to detached units, their ADUs boost property value, generate rental income, and offer flexible living using quality, energy-efficient materials.

EHD Builders offers ADU construction services in Los Angeles, CA, including garage conversions, detached units & additions. Costs range from $150K–$350K+. Services cover permits, framing, plumbing, electrical & more.

Family-owned Home Kitchen Bath Remodeling of San Diego offers 20+ years of expert kitchen, bathroom, ADU, flooring, and interior remodeling services. Competitive pricing, 3D design, guaranteed completion dates, and financing options available.

California Construction Center Inc. specializes in garage conversions and ADU services in Concord and San Francisco County. They transform garages into guest suites, rental units, and home offices, ensuring code compliance and quality craftsmanship.

Expert ADU builders serving Massachusetts homeowners. Services include detached ADUs, garage conversions, basement units & in-law suites. Fully permitted, code-compliant builds. Costs from $80K. Serving Boston, Cambridge, Worcester & statewide.

Suite Additions Portland specializes in ADU construction, garage conversions, home additions, and accessibility remodeling in the Portland metro area. Led by Tim Jorgens (CCB #201364), they offer full-service design, permitting, and build solutions.

Live Dream Colorado helps Colorado Springs property owners build ADUs—detached backyard cottages or attached in-law suites. Key factors include zoning, lot size, setbacks, and owner-occupancy rules. LDC guides clients through planning and construction.

Potato Construction Inc., based in Rosemead, CA, is a licensed ADU contractor with 15+ years of experience. They build detached ADUs, garage conversions, attached ADUs, and JADUs across the San Gabriel Valley and greater Los Angeles area.

Bay Star Garage transforms garages into functional spaces in Santa Clara & Livermore, CA. Services include remodeling, flooring, EV charging, lighting, conversions & cabinets. Licensed, bonded & insured contractor specializing in ADUs and garage upgrades.

Elite Construction builds ADUs in Santa Cruz County, offering detached units, garage conversions & addition ADUs. Projects range 250–1,200 sq ft, cost $115K–$450K, and take 6–9 months. Free estimates available.