Attached ADU near Costa Mesa, CA
Ataman Studio
13151 Fountain Park Drive, Los Angeles, CA 90094
36.5 miles
Ataman Studio is a trusted ADU contractor in Los Angeles, serving all of California. Full-service design, permitting, and construction for detached ADUs, garage conversions, and in-law units, with compliance to local zoning and state regulations.
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Avorino
360 E 1st St #355, Tustin, CA 92780
7.6 miles
Avorino specializes in ADU construction, offering detached, attached, garage conversion, and above-garage units. Projects range from $250K–$400K, covering design, permitting, and build phases over 10–14 months.
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The Sterling-Watson Collective
1441 Huntington Dr, 1900, South Pasadena, CA 91030
33 miles
Sterling-Watson Collective is a full-service ADU contractor in Los Angeles offering design, permitting, structural engineering & construction management for accessory dwelling units, helping homeowners add rental units, guest suites & more.
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SDS Homes
42400 Winchester Road, Temecula, CA 92590
47.3 miles
SDS Homes Construction is a Temecula, CA design-build contractor specializing in ADUs, granny flats, and Casitas. They offer turnkey services from design to permitting and construction, serving Temecula and Murrieta homeowners.
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TNT Design & Build
3142 Tiger Run Court, Carlsbad, CA 92010
48.9 miles
TNT Design & Build specializes in ADUs, garage conversions & room additions in San Diego's North County. 15 years experience, in-house management, free architectural design, prices from $325/sqft with guaranteed budget & timeline.
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JL Biber Construction Inc.
15548 Saddleback Road, Riverside, CA 92506
34.6 miles
An ADU is a secondary residential unit on the same property as a primary home. JL Biber Construction Inc., a licensed ADU builder in Riverside, California, offers full-service garage conversions, granny flats, and detached ADU construction.
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Joel & Co. Construction
11693 San Vicente Boulevard, Los Angeles, CA 90049
36.4 miles
Joel & Co. Construction, serving Los Angeles since 1983, offers expert residential & commercial construction, including custom homes, kitchen & bathroom remodels, ADUs, room additions, and general contracting across Beverly Hills, Santa Monica & beyond.
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OC Builders Group
600 West Santa Ana Boulevard, Santa Clara, CA 92701
5.9 miles
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 value.
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Infinity ADU
645 West 15th Street, Long Beach, CA 90813
18.2 miles
Infinity ADU is a top ADU contractor in Long Beach, CA, specializing in attached, detached ADUs, granny flats & garage conversions. They handle design, permitting & construction, ensuring full local code compliance for a stress-free build.
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LA ADU Solutions Inc.
Los Angeles, CA 90012
32.7 miles
Accessory Dwelling Units (ADUs) offer California property owners passive income, elderly care solutions, and property value growth. Since 2020 legislation, ADU permits are easier to obtain. Construction costs range $350–$450/sq ft, with rental income potential up to $4,000/month.
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Horizon Remodeling Inc.
614 South Euclid Street, Fullerton, CA 92832
13.8 miles
Horizon Remodeling Inc. is a full-service residential remodeling company offering kitchen, bathroom, roofing, flooring, painting, and ADU conversions. Dedicated project managers coordinate all trades, keeping projects on schedule and within budget.
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Block Contracting
4268 Bonita Dr, Oceanside, CA 92056
49.4 miles
Block Contracting specializes in crafting the best Accessory Dwelling Units (ADUs) in Oceanside, CA. Our designs are meant to enhance your property’s value and functionality. Whether you’re seeking a modern guest house, a stylish rental unit, pool house, or a versatile space for family.
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Lux Builders
1020 Manhattan Beach Boulevard, Manhattan Beach, CA 90266
31.7 miles
Lux Builders offers room additions & ADU services in Los Angeles, including detached ADUs, garage conversions & second-story additions. With 20+ years experience, they manage design, permits & construction across LA County.
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ADUXprt IE General Builders
4534 Carter Court, Chino, CA 91710
27.9 miles
Our Expert Team offers dependable expert services on short notice because of our extensive network of employees and sub-contractors located throughout California. Our teams of respectable employees are always willing to help accommodate our customer’s needs, by going the extra mile, especially when it comes to meeting those critical deadlines.
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Ted Design Build
513 West Wilson Avenue, Los Angeles, CA 91203
38.7 miles
Ted Design Build is an LA-based ADU contractor offering full-service design, permitting, and construction. Specializing in detached ADUs, garage conversions, and in-law suites across Los Angeles and Glendale.
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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.