ADU Contractors near Westminster, CA
Builderwell
9641 Irvine Center Drive, Irvine, CA 92618
13.5 miles
Builderwell is an ADU contractor in Orange County, CA, offering full-service design-build solutions for custom accessory dwelling units, including guest houses, in-law suites, and rental units across Irvine, Newport Beach, and Laguna Hills.
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Long Beach Elite ADU Solutions
245 East 3rd Street, Long Beach, CA 90802
10.8 miles
Long Beach Elite ADU Solutions specializes in ADU construction and garage conversions in Long Beach, CA. Services include detached ADUs, JADUs, basement and above-garage units. 15+ years experience, 150+ completed projects.
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DB Construction
4555 Valley Boulevard, Los Angeles, CA 90032
28.8 miles
DB Construction is a full-service ADU contractor in Greater Los Angeles, building detached ADUs, garage conversions, JADUs, in-law suites, and room additions. They manage permits in-house, offering transparent costs and turn-key project completion... read more
RIA Group Construction
26632 Towne Centre Dr # 300, Foothill Ranch, CA 92610
19.5 miles
RIA Group Construction (CA Lic. #1143899) is a full-service design-build contractor in Orange County, CA. Specializing in home renovations, new builds, ADUs, kitchen & bathroom remodeling, and pool construction.
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Michael Matthews Studio
Baxter Street, Los Angeles, CA 90039
24.7 miles
Michael Matthews Studio is an architecture firm in Los Angeles specializing in custom homes, ADUs, SB9 units, high-end renovations, and modern design. We believe architecture is a catalyst of change for individuals, communities, and the planet.read more
Arrowhead Remodeling & Design
18345 Ventura Boulevard, Tarzana, CA 91356
42.1 miles
Arrowhead Remodeling & Design is a licensed California ADU contractor specializing in detached ADUs, garage conversions, and in-law suites. They offer free in-home consultations and manage projects from planning to completion.
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Infinity ADU
645 West 15th Street, Long Beach, CA 90813
11.8 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.... read more
La Tour Builders
23362-G Via Fabricante, Mission Viejo, CA 92691
21 miles
La Tour Builders offers expert ADU construction in Laguna Niguel, CA, including garage conversions, detached units & attached additions. Licensed, insured & code-compliant, they help homeowners add rental income or multigenerational living... read more
California ADU Experts
111 East Cedar Avenue, Burbank, CA 91502
34.4 miles
California ADU Experts simplify the complexities of ADU development with a full-service approach encompassing everything from design and architecture to permitting and construction.
Their goal is to provide a streamlined experience tailored ... read more
ADU Garage Experts
2999 Overland Ave. Suite 103, Los Angeles, CA 90064
31.1 miles
ADU Garage Experts, a Southern California structural engineering firm, specializes in ADU planning and drafting. They offer garage conversions from ~$70/sqft, attached and detached ADUs, helping homeowners add rental income or living space.
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RODO Development LLC
19720 Ventura Boulevard, Woodland Hills, CA 91364
44.2 miles
RODO Development LLC is a licensed LA-based ADU contractor offering full-service design-build solutions including garage conversions, detached ADUs, attached ADUs, basement conversions & custom designs across Los Angeles and surrounding areas.... read more
EAM Development & Construction
15300 Ventura Boulevard, Sherman Oaks, CA 91403
38.8 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 Cali... read more
Reef Builders Inc
6320 Topanga Cyn. Blvd, Woodland Hills, CA 91367
46.1 miles
Reef Builders Inc is a Los Angeles ADU contractor founded in 2012, specializing in detached ADUs, garage conversions, JADUs & attached units. They manage permits, design, and full construction for homeowners seeking rental income or extra livi... read more
Molinar Design
1132 Spence Street, Los Angeles, CA 90023
24.7 miles
Molinar Design is a licensed design-build firm in Los Angeles offering ADUs, garage conversions, custom homes, remodeling, commercial architecture, permit packages, and fire & water damage restoration across Los Angeles County.
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Lux Builders
1020 Manhattan Beach Boulevard, Manhattan Beach, CA 90266
25 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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Other cities in California
What you need to know
ADU Contractors in Westminster, CA: Building in Orange County's Little Saigon
Westminster, California, famously known as the home of Little Saigon, the largest Vietnamese-American community in the United States, is a vibrant city in Orange County with a dense residential landscape. This unique cultural and demographic character has driven significant demand for Accessory Dwelling Units (ADUs) in Westminster, as multigenerational living is a deeply rooted tradition in many of the city's households. Experienced ADU contractors in Westminster understand this cultural context and specialize in designing spaces that accommodate extended families while maximizing property value.
Westminster ADU Regulations and Zoning Requirements
ADU contractors working in Westminster must navigate both California state ADU laws and the city's local ordinances. Following California's landmark ADU legislation, Westminster has aligned its policies to encourage ADU development. Key regulations that contractors and homeowners must be aware of include:
- ADUs are permitted in single-family and multifamily residential zones throughout Westminster
- Detached ADUs can be up to 1,200 square feet in size
- Junior ADUs (JADUs) are allowed up to 500 square feet within the existing primary structure
- Setback requirements typically require 4-foot side and rear yard setbacks for new detached ADUs
- ADUs under 750 square feet are exempt from impact fees under California law
- Owner-occupancy requirements have been suspended through 2025 per state law
Why Hire a Local Westminster ADU Contractor?
Hiring a licensed ADU contractor familiar with Westminster is essential for a smooth building process. Local contractors have established relationships with the City of Westminster Community Development Department and understand the permitting timelines and plan check requirements specific to this city. Westminster's older housing stock, with many homes built in the 1950s through 1970s, often presents unique challenges such as outdated electrical panels, older plumbing systems, and slab foundations that require expert evaluation before ADU construction begins.
Types of ADUs Built in Westminster
Professional ADU contractors in Westminster offer a full range of construction options tailored to the city's typical lot sizes and home configurations:
- Detached ADUs – Standalone backyard units ideal for rental income or family use
- Attached ADUs – Additions connected to the primary residence
- Garage Conversions – A popular and cost-effective option given Westminster's many single-car garages
- Junior ADUs (JADUs) – Interior conversions within the existing home footprint
Maximize Your Westminster Property with a Trusted ADU Contractor
With median home values rising across Orange County, adding an ADU in Westminster is one of the smartest investments a homeowner can make. Whether you're looking to house family members, generate rental income, or increase your property's resale value, working with a qualified, licensed ADU contractor in Westminster, CA ensures your project is completed on time, on budget, and fully up to code.