Detached ADU near Costa Mesa, CA

Pixel Arch LLC, Glendale CA, offers residential architecture services including custom home design, ADUs, garage conversions, duplexes & remodeling. Permit-ready plans, Title 24 reports & 3D renderings for California clients.

California's 2020 ADU laws allow two ADUs on single-family lots, reduced setbacks, larger units up to 800 sq ft, no owner-occupancy rules until 2025, faster approvals, and expanded parking exemptions statewide.

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.

Herbertson OG is a construction and solar company offering ADU building, remodeling, new construction, roofing, HVAC, and solar panel installation. They serve homeowners, investors, and designers across residential and commercial projects.

ADU Custom Home Source, based in Riverside, CA, specializes in custom manufactured homes and ADUs. Serving Southern California, they handle design, permitting, financing, and installation, offering granny flats, casitas, and detached ADUs.

Okopod's 215 ft² backyard studio ADU features a dual pitch standing seam roof, Natural Thermowood cladding, aluminum doors, a full bathroom, and an anthracite grey pergola with adjustable louvres and slab flooring.

Musick Construction Inc. offers ADU construction services including new builds and conversions like garage and basement conversions. They handle permits, design, and finishes for granny flats, in-law suites, and rental units.

Pasadena Master ADU Builder is a top ADU contractor in San Gabriel Valley, offering detached ADUs, garage conversions, and JADUs. With 20+ years experience, 150+ projects, and 98% satisfaction, they deliver compliant, high-quality builds boosting property value by 20–30%.

All Inclusive ADU is a licensed ADU contractor serving Orange, Riverside, Los Angeles & San Diego Counties. They offer full-service ADU construction including detached ADUs, garage conversions & JADUs with fixed pricing and a 365-day warranty.

ADU's by Design is an Inland Empire ADU contractor serving Riverside & San Bernardino County. They offer full-service accessory dwelling unit design & construction, including detached ADUs, garage conversions, remodeling & architectural design.

ADUs are secondary units built on existing lots. ORR Construction builds detached ADUs, garage conversions, JADUs & in-law suites in California. Costs range $50–$300/sq ft. California laws like SB 897 simplify the permitting process.

Doobek Builders offers home remodeling, large additions, and ADU construction. Services include garage conversions, interior conversions, additions, and ground-up ADU builds—ideal for granny flats, in-law suites, or backyard cottages.

The ADU Pro® is a licensed ADU contractor in Chino, CA, serving Fontana and Southern California. Specializing exclusively in ADU construction, they offer detached ADUs, garage conversions, and granny flats with a lifetime transferable warranty.

Fontana General Contractors builds custom ADUs, including detached units, garage conversions, and in-law suites. They handle permits, zoning, and full construction management, helping property owners add value and flexible living space.

Molinar Design is a licensed design-build firm in Los Angeles offering ADUs, garage conversions, custom homes, remodeling, commercial architecture, permit packages, and fire & water damage restoration across Los Angeles County.