R Remodeling is a trusted ADU contractor in Whittier, specializing in accessory dwelling units for added living space or rental income. Experienced in detached ADUs, they manage projects from consultation to completion with minimal property disrup... read more
Licensed, veteran-owned ADU builder in Van Nuys. Detached, attached and junior ADUs plus garage conversions, with design, permits and construction handled under one roof.
read more
Landmark Building Inc is a Los Feliz-based general contractor serving Los Angeles neighborhoods including Hollywood Hills, Silverlake & Echo Park. They offer residential & light commercial remodeling, ADUs, garage conversions & free es... read more
Vision ADU is a California ADU contractor specializing in detached ADUs, garage conversions, attached ADUs, and JADUs. They offer full-service design, permitting, and construction to help homeowners add value or rental income.
read more
Ivy Builders is a top ADU contractor in Los Angeles & Orange County, specializing in detached ADUs, granny flats & backyard cottages. Offering pre-approved plans, full permitting, and custom builds ranging from $200K–$500K.
read more
Garage conversion to ADU in Los Angeles requires structural upgrades, permits, and utility connections. IBA Builders evaluates ceiling height, slab condition, setbacks, and utility access before design begins, ensuring code compliance and accurate... read more
An accessory dwelling unit (ADU) is a secondary home on a single-family lot with kitchen, bath, and sleeping space. Xavier Design Group helps Southern California homeowners build ADUs with trusted contractors and transparent pricing.
read more
MGMW Remodeling INC is a Los Angeles ADU contractor specializing in accessory dwelling units. Services include detached ADU construction, garage conversions, architectural design, permitting, and full project management from planning to completion... read more
Cornejos Builders offers ADU construction, garage conversions & home additions in LA & Orange County. 24 ADUs completed in 4 years. Costs range $80K–$250K. Licensed, insured, bonded. 1-year warranty included.
read more
Structura Remodeling is an LA-based licensed ADU contractor specializing in Accessory Dwelling Units, garage conversions & JADUs. Costs range $115K–$145K. Financing options include HELOC & construction loans. Free consultation available.... read more
At Doran Companies LLC, we specialize in creating accessory dwelling units (ADUs) that are not just spaces, but extensions of your home’s character. Whether you’re considering garage conversions, new construction, or in-law suites, our experti... read more
Zieba Builders, a Southern California design-build firm, was named one of the top 7 ADU contractors in Long Beach by Home Builder Digest. They specialize in custom homes, garage conversions, granny flats & detached ADUs.
read more
OC Builders Group specializes in ADU construction in California, offering detached ADUs, garage conversions, granny flats & in-law suites. They help homeowners navigate permits, zoning & state regulations to add rental income or housing va... read more
Ohayon Construction is a licensed Los Angeles ADU contractor since 2008. They build detached ADUs, garage conversions, attached ADUs & JADUs. Serving Beverly Hills, Santa Monica & more. Free consultation available.
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
Orange, California is one of the few cities in Southern California with a nationally recognized historic downtown district, known as Old Towne Orange. This unique characteristic means that ADU contractors working in Orange must navigate not only standard California state ADU regulations but also local historic preservation guidelines when projects fall within or near the Old Towne Historic District. Homeowners in these areas may face additional design review requirements to ensure that any accessory dwelling unit complements the architectural character of the surrounding neighborhood.
Since 2020, California has significantly relaxed statewide ADU regulations, and the City of Orange must comply with these state mandates. Key rules that experienced ADU contractors in Orange work with include:
Working with a knowledgeable ADU contractor in Orange is essential to successfully navigating the city's permitting process. The City of Orange Community Development Department handles ADU permit applications, and experienced contractors understand the importance of submitting complete, accurate plans to avoid costly delays. The city generally follows the 60-day permit review timeline mandated by California state law. Projects within the Old Towne Historic District may require additional review by the Old Towne Historic Preservation Committee.
Orange's diverse housing stock — ranging from historic Craftsman bungalows near the Plaza to newer tract homes in areas like Serrano Heights and Belmont — creates a variety of ADU opportunities. Skilled ADU contractors in Orange regularly build:
When selecting an ADU contractor in Orange, California, homeowners should look for professionals with verified experience in local permitting, familiarity with Orange's zoning codes, and a portfolio of completed ADU projects in the area. A qualified contractor will handle everything from design and engineering to permit submission and final inspection, ensuring your ADU project is completed efficiently, legally, and to the highest standard of quality.