ADU Contractors near Costa Mesa, CA
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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Cali ADU
3705 W Pico Blvd, Ste 1635, Los Angeles, CA 90012
35.8 miles
Cali ADU is a top Los Angeles ADU builder offering custom and pre-designed accessory dwelling units, garage conversions, and granny flats. Fixed pricing, fast permitting, and expert project management ensure stress-free builds from design to move-in.
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Fassino Development
4275 Linda Vista Drive, Fallbrook, CA 92028
47.4 miles
California ADUs are self-contained units on single-family lots, offering rental income, family housing, and no land purchase. Build up to 1,200 sq ft. Fassino Development guides homeowners through ADU construction, ensuring local code compliance.
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Baum Construction & Development Inc
2900 Fidler Avenue, Long Beach, CA 90815
15.3 miles
ADUs (accessory dwelling units) are self-contained homes on existing properties, ideal for rentals or multi-generational living. Costs range $100K–$200K. Baum Construction & Development Inc builds ADUs in Long Beach, CA.
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Sennikoff Architects
5500 2nd Street, Long Beach, CA 90803
14.1 miles
Sennikoff Architects, based in California, specializes in ADU design, custom homes, and remodels in Long Beach and Southern California. Led by licensed architect Steven Sennikoff, the firm offers detached ADUs, garage conversions, and JADUs with full permit coordination.
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YOR Construction
12135 Miranda Street, Valley Village, CA 91607
44.8 miles
An ADU (accessory dwelling unit) is a secondary home on a residential lot. Garage conversion ADUs are cost-effective options. YOR Construction, an LA-based ADU contractor, specializes in garage conversions tailored to homeowner needs.
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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, your project is in caring and capable hands.
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Premium ADU
5161 Lankershim Boulevard, North Hollywood, CA 91601
43.4 miles
Premium ADU is a Los Angeles ADU specialist offering design, permitting, and construction of detached ADUs, garage conversions, and JADUs. Operating since 2021 with an in-house team, projects typically complete in 6–12 months.
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Harding Design & Construction
4040 East Vermont Street, Long Beach, CA 90814
14.4 miles
BuildForm Design
14401 Sylvan Street, Van Nuys, CA 91401
48.5 miles
BuildForm Design is a Los Angeles general contractor offering full-service ADU design, build, and value engineering. With 15 years of experience, they handle basement conversions, detached ADUs, garage conversions, and more across Southern California.
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Nagar Builders Inc.
6245 Wilshire Boulevard, Los Angeles, CA 90048
38 miles
Nagar Builders Inc. is a Los Angeles construction company offering ADU construction, garage conversions, kitchen and bathroom remodeling, room additions, roofing, electrical work, and commercial remodeling since 2019.
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Lion Builder Construction
777 West 19th Street, Costa Mesa, CA 92627
1.9 miles
Lion Builder Construction is a Southern California contractor serving Orange, LA, and Riverside Counties, plus Maricopa County, AZ. They specialize in new homes, ADUs, and kitchen remodels, offering a one-stop-shop approach.
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Markis Construction
14126 Sherman Way, Van Nuys, CA 91405
48.1 miles
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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IA Builders
10736 Jefferson Blvd, Unit 703, Culver City, CA 90230
36 miles
IA Builders is a Los Angeles construction company offering new home builds, remodeling, additions, and ADU construction. Services include garage conversions, detached ADUs, and in-law suites, delivered with quality craftsmanship and transparent pricing.
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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.