ADU Contractors near Santa Ana, CA
Oceanside ADU Design
3355 Mission Avenue, Aaronsburg, PA 92058
47.5 miles
Oceanside ADU Design is an Oceanside, CA firm specializing in detached, attached, garage conversion, and junior ADUs. Founded by structural engineer Devin, they handle architecture, engineering, and permitting in-house for efficient, budget-consci... read more
Vertebrae
725 South Los Angeles Street, Los Angeles, CA 90014
29.9 miles
Vertebrae is an LA-based, woman-owned architecture studio founded in 2012, specializing in ADU design and small-space living. Award-winning projects include the 2025 Architizer A+ Award and 2023 AIA LA Honor Award winners.
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Supreme Remodeling Inc.
5000 Van Nuys Boulevard, Van Nuys, CA 91403
43.8 miles
Supreme Remodeling Inc. is a licensed Los Angeles general contractor with 30+ years of experience. Services include kitchen & bathroom remodeling, ADU construction, garage conversions, room additions, and new home builds across LA, Ventura &am... read more
Buildoly
915 Wilshire Blvd, Los Angeles, CA 90017
30.7 miles
Buildoly is an ADU contractor offering full-service construction for detached ADUs, garage conversions, granny flats, JADUs, and backyard cottages. They manage design, permitting, and building, helping homeowners add rental income or family housin... read more
America Green Builders
6601 Alcove Avenue, North Hollywood, CA 91606
41.1 miles
America Green Builders (AGB) is a Los Angeles general contractor with 20+ years of experience offering kitchen remodeling, bathroom renovation, room additions, ADU garage conversions, custom homes, pool construction, and hardwood flooring.
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EG Modern Construction
421 East Elmwood Avenue, Burbank, CA 91501
38.7 miles
EG Modern Construction offers full-service ADU design and construction in Los Angeles, including detached ADUs, garage conversions, and JADUs. Licensed and insured, they manage consultation, permitting, and build completion.
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UNI Construction
1142 South Diamond Bar Boulevard, Diamond Bar, CA 91765
19.8 miles
UNI Construction builds detached and attached ADUs, handling site planning, structural engineering, and permit-ready drawings. Options include backyard cottages, granny flats, and in-law suites, all code-compliant and tailored to your property.read more
Albera Construction
4001 Inglewood Ave. #101-219, Redondo Beach, CA 90278
29.6 miles
Albera Construction builds custom ADUs in Los Angeles County, including detached units, garage conversions, and JADUs. Licensed contractor #1079656, serving South Bay, Beach Cities, and Greater LA. Full project management from design to permits.read more
ADU Designers & Builders
2461 East Orangethorpe Avenue, Fullerton, CA 92831
9.4 miles
ADU Designers & Builders is a full-service ADU contractor in Fullerton, CA, offering detached ADUs, garage conversions, attached ADUs & JADUs across Southern California, with expert design, permitting, solar integration & 0% financing ... read more
ATARI Home Builders
19720 Ventura Boulevard, Woodland Hills, CA 91364
49.9 miles
Atari Home Builders is a licensed California general contractor serving Woodland Hills & Greater LA. Specializing in custom homes, ADUs, garage conversions, kitchen & bathroom remodeling, and fire rebuilds.
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Capital Construction
41558 Eastman Drive, Murrieta, CA 92562
38.6 miles
Capital Construction Inc. is an experienced ADU contractor building detached ADUs, in-law suites, granny flats, and rental units. Licensed, bonded, and insured, they handle permitting, design, and construction while respecting budgets and timeline... read more
CarbonShack Design
715 Cypress Avenue, Los Angeles, CA 90065
31.4 miles
CarbonShack Design offers expert ADU design services in Los Angeles, specializing in accessory dwelling units, detached ADUs, granny flats & in-law suites. Carbon-conscious building practices & design-first approach set them apart.
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Orange County Construction
1173 North Red Gum Street, Anaheim, CA 92806
8 miles
Markis Construction
14126 Sherman Way, Van Nuys, CA 91405
45.8 miles
Bunch Design
2718 West Avenue 34, Los Angeles, CA 90065
34.9 miles
ADUs (granny flats/backyard cottages) boost property value & rental income. Bunch Design, LA, offers custom & pre-designed ADUs: Garage Studio ($300K+), Cottage ($400K+), Stop Making Sense ($425K+), and Step ADU ($425K+).
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Other cities in California
What you need to know
ADU Contractors in Santa Ana: Building in One of California's Most Densely Populated Cities
Santa Ana, California, is one of the most densely populated cities in the entire United States, making Accessory Dwelling Units (ADUs) an especially valuable housing solution for homeowners looking to maximize their property's potential. With a population exceeding 310,000 residents packed into just over 27 square miles, the demand for additional housing in Santa Ana is significant. Experienced ADU contractors in Santa Ana understand the unique challenges and opportunities that come with building in such a compact urban environment, from navigating tight lot sizes to working within the city's specific zoning regulations.
Santa Ana Zoning and ADU Regulations You Need to Know
Santa Ana falls under both California state ADU law and its own local municipal codes. The city has adopted regulations consistent with California's statewide ADU legislation, which has been significantly liberalized in recent years. Key regulations that qualified ADU builders in Santa Ana must navigate include:
- Maximum ADU size: Detached ADUs can be up to 1,200 square feet, while attached ADUs are generally limited to 50% of the primary dwelling's square footage.
- Setback requirements: A minimum 4-foot setback from rear and side property lines is required for most new detached ADUs.
- Height limits: Detached ADUs are typically limited to 16 feet in height, though this can vary based on proximity to public transit.
- Owner-occupancy rules: California suspended owner-occupancy requirements for ADUs built between 2020 and 2025, giving Santa Ana homeowners added flexibility.
- Parking requirements: ADUs located within half a mile of public transit may be exempt from additional parking requirements.
Types of ADUs Built by Santa Ana Contractors
Professional ADU contractors serving Santa Ana, CA are experienced in constructing a variety of ADU types suited to the city's diverse housing stock, which includes many older single-family homes and multi-family properties. Common ADU types include:
- Detached ADUs – Standalone structures built in backyards, ideal for rental income or multigenerational living.
- Attached ADUs – Units added directly to the existing home, sharing at least one wall.
- Garage Conversion ADUs – Converting existing garages into livable space, a popular option in Santa Ana's older neighborhoods.
- Junior ADUs (JADUs) – Units up to 500 square feet created within the existing primary residence.
Why Hire a Local ADU Contractor in Santa Ana?
Hiring a licensed and experienced local ADU contractor in Santa Ana is critical to ensuring your project meets all city and state requirements. Local contractors are familiar with the City of Santa Ana's Planning and Building Agency permitting process, typical soil and foundation conditions in the area, and the architectural styles common to Orange County neighborhoods. A knowledgeable contractor will help streamline permit approvals, manage construction efficiently, and deliver a compliant, high-quality ADU that adds lasting value to your property.