Attached ADU near Costa Mesa, CA
New Dawn Construction
14900 Ventura Blvd Unit #330, Sherman Oaks, CA 91403
46.1 miles
New Dawn Construction is an ADU contractor specializing in detached ADUs, garage conversions, in-law suites, granny flats, JADUs, and backyard cottages. They guide homeowners through design, permitting, and construction for flexible housing soluti... read more
USA Builders Pro
2900 Bristol Street, Costa Mesa, CA 92626
1.7 miles
USA Builders Pro offers 20+ years of ADU construction and home addition services. Specializing in detached & attached ADUs, room additions, permits, and zoning compliance, they help homeowners boost property value and living space.
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ADU Cities
1420 East Katella Avenue, Anaheim, CA 92867
9.6 miles
ADU Cities is a California design-build firm specializing in ADUs, JADUs, garage conversions, and remodels. They manage design, permitting, and construction, helping homeowners add living space, boost property value, or generate rental income.
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GoAdu Construction
1812 West Burbank Boulevard, Burbank, CA 91506
42.4 miles
Experience a personalized approach to ADU construction with GO ADU. From initial design concepts to permits, construction, and financing, we offer a seamless, all-in-one solution customized to your needs. With owner involvement at every stage, you... read more
IBA Builders
13743 Ventura Boulevard, Sherman Oaks, CA 91423
45.2 miles
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
Harding Design & Construction
4040 East Vermont Street, Long Beach, CA 90814
14.4 miles
Boss Homes
1057 South Vail Avenue, Montebello, CA 90640
26.4 miles
Avica Construction & Development Inc
357 West Route 66, Glendora, CA 91740
32 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
Step Up Builders Inc
16250 Ventura Boulevard, Encino, CA 91436
47.5 miles
Step Up Builders Inc is a Class A licensed ADU contractor in Encino, CA, serving Los Angeles, San Fernando Valley & Inland Empire. 30+ years experience in detached ADUs, garage conversions, JADUs & remodels. Free estimates available.
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AP Remodeling
5972 Washington Boulevard, Los Angeles, CA 90232
37 miles
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
Dobson Construction Inc.
5021 Blum Road, Martinez, CA 94553
31.6 miles
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
Kol & Co
23431 Blue Bird Dr, Lake Forest, CA 92630
12 miles
Kol & Co. is an ADU contractor serving Orange County, West LA & North San Diego. With 15+ years in design-build, they handle detached ADUs, garage conversions, JADUs & more—managing permits, design, and construction under one roof.read more
California Dream Builders
13623 Victory Boulevard, North Hollywood, CA 91401
43.7 miles
California Dream Builders specializes in ADU design and construction, offering end-to-end services including architectural design, permitting, and full construction management. They build detached ADUs, granny flats, in-law suites, and backyard co... read more
ADU Certified
4401 Atlantic Avenue, Long Beach, CA 90807
18.5 miles
ADU Certified is a Long Beach, CA contractor specializing in ADU planning, permitting & construction since 2000. Services include garage conversions, detached ADUs, kitchen & bathroom remodeling throughout Southern California.
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Silver Hammer Builders
11150 West Olympic Boulevard, Los Angeles, CA 90064
39.6 miles
Silver Hammer Builders is a licensed ADU contractor in Los Angeles with 15+ years of experience. Services include garage conversions, detached ADUs, JADUs & in-law suites. Full project management, permits, and free consultations offered.
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Other cities in California
What you need to know
Searching for top Attached ADU ADU Contractors in Costa Mesa, 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 Costa Mesa 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.
Costa Mesa 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 Costa Mesa, California, and get started today.