ADU Contractors near Costa Mesa, CA
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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Harding Design & Construction
4040 East Vermont Street, Long Beach, CA 90814
14.4 miles
Urban Construction & Design Solutions
3490 East Spring Street, Long Beach, CA 90806
18.8 miles
Licensed Long Beach general contractor Urban Construction & Design Solutions (CA #1030683) specializes in ADU construction, garage conversions, kitchen remodels, bathroom renovations & home additions across Greater LA and Orange County.read more
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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Productive Home Renovation Inc
7241 Lankershim Boulevard, North Hollywood, CA 91605
43.7 miles
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
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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Custom Home Builders Malibu
42400 Winchester Road, Temecula, CA 92590
47.3 miles
Custom Home Builders Malibu specializes in ADU construction, backyard Casitas & granny flats. They offer turnkey design-build services, handling permits & compliance with California ADU laws for legal, independent living spaces.
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Los Angeles Advanced ADU Builders
240 South Beverly Drive, Los Angeles, CA 90212
39.1 miles
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
SouthStar USA
1611 Pomona Road, Corona, CA 92878
23.5 miles
SouthStar USA offers ADU construction in Riverside & Orange County, CA. Services include detached ADUs, attached ADUs, garage conversions & JADUs. Quality builds, permit-compliant, with transparent pricing for every project stage.
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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
Eureka Modular
2553 Sampson Avenue, Corona, CA 92879
25 miles
Eureka Modular builds steel frame modular ADUs and single family homes. Steel framing offers durability, design flexibility, and sustainability. Ideal for detached ADUs, backyard cottages, granny flats, and casitas with efficient, precise construc... read more
YOR Construction & Investments
12135 Miranda Street, Valley Village, CA 91607
45.1 miles
An ADU (accessory dwelling unit) is a secondary home on a residential lot. Garage conversion ADUs are cost-effective, blending with existing homes. YOR Construction & Investments specializes in Los Angeles ADU garage conversions.
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OakADU
9671 Sunland Boulevard, Santa Clara, CA 91040
47.5 miles
OakADU is a full-service ADU contractor in Los Angeles & Southern California, offering design, permitting, construction & property management for detached ADUs, garage conversions, attached ADUs & interior conversions.
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Addition Building & Design Inc.
4335 Van Nuys Boulevard, Sherman Oaks, CA 91403
45.9 miles
Addition Building & Design Inc. is a Los Angeles design-build firm offering custom home building, additions, renovations, ADU construction, and outdoor living spaces. Their integrated approach covers planning, permitting, and construction for ... read more
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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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.