Avica Construction & Development Inc

357 West Route 66, Glendora, CA 91740 22.6 miles

Avica Construction & Development Inc is a licensed LA-based ADU contractor building detached ADUs, garage conversions, attached ADUs & JADUs across Los Angeles, Orange County & San Bernardino County, managing design, permits & cons... read more

Productive Home Renovation Inc

7241 Lankershim Boulevard, North Hollywood, CA 91605 40.6 miles

Turnkey Solutions

Productive Home Renovation Inc offers full-service room additions, including porches, upper stories & interior expansions. They handle permits, planning & construction, ensuring code compliance & durable results tailored to each homeow... read more

ADU Resource Center

600 North Brand Boulevard, Glendale, CA 91203 34.7 miles

Licensed 20 years in business Luxury Builds

ADU Resource Center is a Glendale, CA-based ADU contractor with 600+ completed units. They offer full-service ADU building, including design, permitting, financing, and construction of detached, attached, and garage conversion ADUs across Southern... read more

The ADU Pro

15338 Central Avenue, Chino, CA 91710 14.1 miles

Licensed 15 years in business Eco-Friendly

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.read more

ADU Custom Homes

1420 East Katella Avenue, Orange, CA 92867 3.9 miles

Licensed 35 years in business Eco-Friendly

ADU Custom Homes is a licensed California ADU contractor with 35+ years of experience serving LA, Orange & Riverside counties. They specialize in detached ADUs, garage conversions & additions, managing projects from permits to Certificate ... read more

Silver Moccasin Builders

2613 Pasadena Avenue, Los Angeles, CA 90031 29.4 miles

DYM Builders

2372 Morse Avenue, Los Angeles, CA 92614 8.6 miles

Licensed 9 years in business Free Consultation

DYM Builders is an ADU contractor in Los Angeles & Orange County, CA, offering design, permitting & construction services for detached ADUs, garage conversions, attached units & tiny homes since 2016.

The ADU Company

504 East Navilla Place, Covina, CA 91723 19.4 miles

Licensed

The ADU Company, a licensed ADU contractor in Covina, CA, serves greater Los Angeles with expert accessory dwelling unit design and construction, including garage conversions, detached ADUs, JADUs, home additions, remodels, and more.

Romano Builders

14407 Gilmore Street, Van Nuys, CA 91401 44.5 miles

Eco-Friendly

Romano Builders specializes in ADU construction in Los Angeles, offering detached, attached, garage conversion, and junior ADUs. Costs range $300–$600/sq ft, with rental income potential of $1,500–$4,000+/month.

Supreme Remodeling Inc.

5000 Van Nuys Boulevard, Van Nuys, CA 91403 43.6 miles

Licensed 30 years in business

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

Fullerton ADU Builder

125 North Euclid Street, Fullerton, CA 92832 8.3 miles

Licensed 10 years in business

Fullerton ADU Builder offers expert ADU construction services including detached ADUs, garage conversions, JADUs, in-law suites & home additions. 10+ years experience, licensed & insured, transparent pricing, free consultations & full ... read more

Lux Construction Group

10850 Wilshire Boulevard, Los Angeles, CA 90024 39.7 miles

Are you looking for the best ADU Contractor in Los Angeles? Having 20+ years of experience, Lux Dev LA offers the most affordable ADU Construction & design services. Let us design and build your new ADU project today. Contact us for a FREE quo... read more

DB Construction

4555 Valley Boulevard, Los Angeles, CA 90032 35.2 miles

DB Construction is a full-service ADU contractor in Greater Los Angeles, building detached ADUs, garage conversions, JADUs, in-law suites, and room additions. They manage permits in-house, offering transparent costs and turn-key project completion... read more

Los Angeles Advanced ADU Builders

240 South Beverly Drive, Los Angeles, CA 90212 37.6 miles

Licensed 20 years in business Prefab Specialist

Los Angeles Advanced ADU Builders offers full-service ADU construction across LA, including garage conversions, detached units, JADUs & prefab ADUs. With 20+ years experience & 500+ builds, they handle design, permits & zoning complian... read more

Levatto Construction

1657 Camelot Dr, Redlands, CA 92374 42.1 miles

Levatto Construction offers ADU construction in Redlands, CA, including granny flats, garage conversions, backyard cottages & attached units. Code-compliant builds tailored to your property goals.

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What you need to know

Searching for top Attached ADU ADU Contractors in Orange, California? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).

Working with a qualified Attached ADU ADU Contractor in Orange ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Attached ADU professionals can guide you through every step.

Orange homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Attached ADU experts featured here bring local expertise and proven experience to help make your project a success.

Browse our listings to find the best Attached ADU ADU Contractors in Orange, California, and get started today.

Attached ADU near Orange, CA