Detached ADU in California

Shed Shop offers ADUs (Accessory Dwelling Units) via their Mini Cottage program. Sizes range from 192 to 480 sq. ft. Services include foundation, plumbing, electrical, permits & more. Available in select cities.

The ADU Coach offers 30+ years of experience in ADU construction, project management, and rental properties. Services range from DIY guidance to full-service builds, covering detached ADUs, garage conversions, granny flats, and backyard cottages.<... read more

SouthStar USA offers ADU construction in Riverside & Orange County, CA. Services include detached ADUs, attached ADUs, garage conversions & JADUs. Quality builds, permit-compliant, with transparent pricing for every project stage.

Atlas General Construction delivers complete ADU construction for detached, attached, and converted structures. Our team manages every phase of development including zoning research, architectural coordination, structural engineering, Title 24 com... read more

Delerio Construction, serving Fresno since 2006, specializes in ADU building and home remodeling. They offer flexible ADU designs for extra living space, home offices, or rentals, plus kitchen, bathroom, flooring, and window services.

Gordon Construction builds custom ADUs including detached backyard cottages, garage conversions, above-garage suites, and in-law suites. They manage permitting, design, and full build-out for homeowners looking to add rental units or extra living ... read more

American Helical (CA LIC #1128975) is a full-service ADU contractor in California offering planning, design, permitting, and construction. A 3rd-generation builder, they provide pre-designed models, custom ADUs, and prefab installs across multiple... read more

Supreme Remodeling Inc. is a licensed Los Angeles general contractor with 30+ years of experience. Services include kitchen & bathroom remodeling, ADU construction, garage conversions, room additions, and new home builds across LA, Ventura &am... read more

OneStop ADU is a San Diego County ADU contractor with 25+ years of experience. They offer custom-built detached ADUs from ~$335/sq ft, including solar, permits & plans. Free feasibility studies available. ADA-compliant units offered.

Your Prefab ADU will be delivered and installed to your site. All ready to enjoy a sustainable home to last for generations.

MyADU4Less is a Southern California ADU builder specializing in prefabricated accessory dwelling units. Offering models from 160–1,200 sq ft, they handle design, permitting, and construction. CalHFA grants up to $40,000 may apply.

ADU Of Oceanside is a full-service accessory dwelling unit builder in Oceanside, CA, handling design, permitting, and construction. Led by UC Berkeley-certified owner Colin Pond, they specialize in detached ADUs, granny flats, and garage conversio... read more

Leonard Garage Conversion is a trusted ADU contractor in Los Angeles with 20+ years of experience. Specializing in garage conversions, granny flats, and JADUs, they offer quality builds, code compliance, and competitive pricing.