ADU Contractors near Costa Mesa, CA
MTZ Contractors
3515 Atlantic Avenue, Long Beach, CA 90807
18.5 miles
Looking for the best ADU construction? Choose Mtz Contractors Inc to completely transform your property, known for constructing excellent ADUs in Long Beach CA. We create and build Accessory Dwelling Units that meet your precise requirements for quality.
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Avorino
Irvine, CA 92602
9 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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MDM General Contractors
1236 North Fairfax Avenue, Los Angeles, CA 90046
38.5 miles
MDM General Contractors offers full-service ADU construction in San Bernardino, including garage conversions, granny flats & detached ADUs. Licensed & insured, they handle design, permits, and build from start to finish.
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Concept Renovations Inc.
16001 Ventura Boulevard, Encino, CA 91436
47.5 miles
Concept Renovations Inc. is a Southern California design-build company with 20+ years in residential remodeling, ADU construction, and garage conversions. They manage design, permitting, and build phases, serving Los Angeles homeowners.
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The ADU Guru
3438 Troy Drive, Los Angeles, CA 90068
39.6 miles
The ADU Guru is a full-service ADU contractor in Los Angeles & Orange County, specializing in garage conversions, detached ADUs & granny flats. With 100+ units completed, they offer $0 down, free 3D design & tenant placement.
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LA Developing Inc.
8504 Firestone Boulevard, Downey, CA 90241
22.5 miles
An Accessory Dwelling Unit (ADU) adds value, rental income, and flexibility to your property. LA Developing Inc. specializes in ADU construction in Los Angeles, offering garage conversions, detached builds, and attached additions with full project support.
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EAM Development & Construction
15300 Ventura Boulevard, Sherman Oaks, CA 91403
46.2 miles
EAM Development & Construction is a California-based licensed contractor specializing in ADU and JADU garage conversions. Services include design, permitting, structural work, energy-efficient systems, and full construction compliant with California building codes.
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Revival Homes
1150 South Olive Street, Los Angeles, CA 90015
32.6 miles
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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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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ADU Builder LA
126 West Elm Court, Burbank, CA 91502
42.1 miles
ADU Builder LA is a full-service ADU contractor in Los Angeles, managing every phase of accessory dwelling unit projects. They offer transparent pricing, expert guidance, and handle all permitting. Services include detached ADUs, attached ADUs, garage conversions, and JADUs.
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Green Tech
5605 Woodman Avenue, Van Nuys, CA 91401
47.6 miles
Green Tech Remodeling offers full-service construction, renovation, and ADU projects including garage conversions, kitchen and bathroom remodels, home additions, flooring, roofing, electrical, plumbing, and more, with 3D design previews included.
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1 Degree Construction
13107 Ventura Boulevard, Studio City, CA 91604
43.2 miles
1 Degree Construction is a Los Angeles ADU builder & home addition contractor. Services include detached ADUs, garage conversions, second-story additions & in-law suites. Projects range from $30K to $150K+.
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Otto ADU
2926 Denby Avenue, Los Angeles, CA 90039
36.3 miles
Otto ADU is a licensed Los Angeles ADU builder specializing in garage conversions, detached ADUs, JADUs & granny flats. Serving LA County with 100+ completed units, adding avg. $185K in home value.
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Pros ADU Builders
27201 Puerta Real, Lake Forest, CA 92691
15.5 miles
Pros ADU Builders in El Cerrito specializes in ADU construction, including detached units, garage conversions, in-law suites, and granny flats. They handle permits, planning, and turnkey builds tailored to each property.
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Newform Builders
10960 Wilshire Boulevard, Los Angeles, CA 90024
40.8 miles
Newform Builders specializes in ADU construction for multi-family and mixed-use properties. They handle permits, inspections, and code-compliant builds, including detached, attached, and space-conversion ADUs, ensuring safe, regulation-aligned results from planning to completion.
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Other cities in California
What you need to know
ADU Contractors in Costa Mesa: Building in Orange County's Creative Hub
Costa Mesa, California, is a vibrant city in Orange County known for its thriving arts scene, proximity to South Coast Plaza, and diverse residential neighborhoods. As housing demand continues to surge across Southern California, ADU contractors in Costa Mesa are playing a critical role in helping homeowners maximize their property value and create additional living space. Whether you live near the Eastside neighborhoods, Mesa Verde, or College Park, adding an Accessory Dwelling Unit (ADU) is one of the smartest investments a Costa Mesa homeowner can make.
Costa Mesa ADU Regulations and Zoning Requirements
Before breaking ground, it's essential to understand the local rules that govern ADU construction in Costa Mesa. The city follows California state ADU law while also enforcing its own municipal guidelines through the Costa Mesa Community Development Department. Key regulations include:
- ADUs are permitted in all single-family and multifamily residential zones
- Detached ADUs can be up to 1,200 square feet in size
- Setback requirements typically require a minimum of 4 feet from rear and side property lines
- Junior ADUs (JADUs) up to 500 square feet may be created within the existing primary dwelling
- Owner-occupancy requirements have been suspended under current California state law through 2025
- ADUs must comply with Costa Mesa's building codes, fire safety standards, and utility connection requirements
Working with an experienced ADU contractor in Costa Mesa ensures that your project meets all local and state requirements, avoiding costly delays or permit rejections.
Types of ADUs Popular in Costa Mesa
Costa Mesa's mix of mid-century homes, bungalows, and larger lot properties makes it well-suited for a variety of ADU types. The most common projects undertaken by Costa Mesa ADU contractors include:
- Detached ADUs: Standalone structures built in the backyard, ideal for rental income or multigenerational living
- Garage Conversions: Transforming existing attached or detached garages into fully livable units
- Attached ADUs: Extensions built onto the side or rear of the primary home
- Junior ADUs (JADUs): Smaller units carved out of existing interior space, often with a separate entrance
Why Hire a Local Costa Mesa ADU Contractor?
Hiring a licensed ADU contractor familiar with Costa Mesa is crucial for a smooth construction process. Local contractors understand the nuances of the city's permit process, have established relationships with the Community Development Department, and are knowledgeable about neighborhood-specific considerations such as HOA rules in areas like Mesa Verde. A qualified contractor will handle everything from architectural design and permit applications to construction and final inspections.
With Costa Mesa's strong rental market driven by its proximity to UC Irvine, John Wayne Airport, and major employment centers, an ADU can generate significant monthly rental income. Contact a trusted Costa Mesa ADU contractor today to explore your options and start the journey toward expanding your property's potential.