Golden ADU, serving Southern California since 2021, specializes in custom ADU construction including garage conversions and detached backyard cottages. They offer flexible financing with no upfront costs, completing most projects in 6–12 months.... read more
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.
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LPI Construction offers custom homes, ADU construction, and solar electric systems. Services cover hillside builds, detached/attached ADUs, garage conversions, and sustainable building practices, managing full project lifecycles from permits to co... read more
Sten Engineering is a Los Angeles firm specializing in ADU design, structural engineering, and garage conversions. Led by licensed P.E. Evgeny Nagovitsyn, they handle permits, structural plans, and ADU builds across Southern California.
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AP Remodeling is an ADU contractor offering garage conversions, ground-up ADU builds, and home additions. Projects range from 400 to 1,200+ sq ft with budgets from $20,000 to $300,000+, serving homeowners seeking rental income, in-law suites, or e... read more
At IND, we have a talented team of contractors, project leads, designers, and installers dedicated to creating your perfect home remodel or updating any interior or exterior project. We begin by scheduling a meeting with one of our exceptional IND... read more
Unlimited Construction & Remodeling (UCR), a licensed Beverly Hills contractor, serves LA, Orange & Ventura Counties. Specializing in garage conversions, ADUs & home remodeling, this family-owned firm delivers budget-conscious, code-co... read more
ADU Garage Experts, a Southern California structural engineering firm, specializes in ADU planning and drafting. They offer garage conversions from ~$70/sqft, attached and detached ADUs, helping homeowners add rental income or living space.
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Dobson Construction Inc. is a Bay Area ADU contractor with 16+ years of experience building home additions, detached ADUs, guest suites, and garage conversions. They handle design, permits, and construction for functional, value-adding residential... read more
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 & architectura... read more
Revival Homes is a California ADU project manager handling planning, financing, design, permitting, and construction. They build detached ADUs, garage conversions, JADUs, and more, with costs ranging from $100K to $300K.
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Tims New Construction is a Los Angeles contractor specializing in ADU, Junior ADU, and garage conversions. Services include custom design, permitting, and full builds. They also support SB9 projects, helping homeowners add rental units or family h... read more
Urbane Design is a Los Angeles ADU contractor offering design, planning, and permitting for attached and detached ADUs. Services include 3D floor plans, engineering plans, and permit processing with transparent pricing and free consultations.
read moreOrange, 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.