Blue Dog Construction

4199 Flat Rock Road, Riverside, CA 92505 36.7 miles

NAMA Construction

62 Sundance Dr, Pomona, CA 91766 21.3 miles

NAMA Construction is a family-owned Los Angeles remodeling company with 75 years of experience. Services include ADU construction, kitchen & bathroom remodeling, whole house renovations, flooring, and painting across Greater LA.

SKS Construction

6445 Sepulveda Boulevard, Van Nuys, CA 91411 25.8 miles

Licensed 37 years in business

SKS Construction, founded in 1987 in Los Angeles, offers ADU construction, seismic retrofitting, balcony inspections (SB 326 & SB 721 compliance), and structural engineering. With 200+ projects and 80% repeat clients, they deliver expert design-build solutions.

King Home Remodeling

1012 West Beverly Boulevard, Montebello, CA 90640 5.7 miles

King Home Remodeling builds detached, attached, garage conversion, basement, and junior ADUs in Montebello. Services include design, permitting, construction, and inspections. Local zoning, size limits, and parking rules apply.

Cavalier Builders Inc

20121 Ventura Boulevard, Woodland Hills, CA 91364 30.2 miles

Cavalier Builders offers professional and affordable services for homeowners looking to build an ADU. ADUs can add significant value to your property, provide additional living space, or generate income as a rental. Our expertise in design, construction, and regulations ensure you receive a high-quality addition to your home and property, giving you the peace of mind that your investment is secure.

Southland Remodeling

15021 Ventura Boulevard, Sherman Oaks, CA 91403 24 miles

Licensed 20 years in business

Southland Remodeling is a Los Angeles ADU contractor offering detached ADUs, garage conversions, and room additions. With 20+ years experience, they handle design, permits, and construction across LA and San Fernando Valley.

EAM Development & Construction

15300 Ventura Boulevard, Sherman Oaks, CA 91403 24.3 miles

Licensed Eco-Friendly

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.

ADU by Kn Remodeling

19709 Ventura Boulevard, Woodland Hills, CA 91364 30.2 miles

Licensed

KN Remodeling is a certified ADU contractor serving Los Angeles, Woodland Hills, Simi Valley & Thousand Oaks. Specializing in detached ADUs, attached ADUs & garage conversions, they handle design, permits & construction with 100+ ADU plans completed.

Build ADU Home Remodel

4780 West Mission Boulevard, Montclair, CA 91762 26.3 miles

Build ADU Home Remodel is a trusted, licensed general contractor serving homeowners throughout the Inland Empire with full-service ADU construction. Whether you're looking to add rental income, house extended family, or increase your property value, we build ADUs that meet your needs and exceed your expectations.

Cornejos Builders

8909 Elmont Avenue, Downey, CA 90240 2 miles

Licensed 4 years in business Luxury Builds

Cornejos Builders offers ADU construction, garage conversions & home additions in LA & Orange County. 24 ADUs completed in 4 years. Costs range $80K–$250K. Licensed, insured, bonded. 1-year warranty included.

BuildForm Design

14401 Sylvan Street, Van Nuys, CA 91401 26.1 miles

Licensed 15 years in business

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.

G&M Home Remodeling

4902 Coldwater Canyon Avenue, Sherman Oaks, CA 91423 22.2 miles

G&M Home Remodeling is a trusted ADU contractor in Los Angeles offering detached ADUs, garage conversions, granny flats, and JADUs. Based in Sherman Oaks, they handle permitting, design, and construction across the greater LA area.

Supreme Remodeling Inc.

5000 Van Nuys Boulevard, Van Nuys, CA 91403 23.8 miles

Licensed 30 years in business

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 & Orange Counties.

ADU Garden Grove

11947 Valley View Street, Garden Grove, CA 92846 12.3 miles

i Arch Studios

127 South Brand Boulevard, Glendale, CA 91204 16 miles

i Arch Studios specializes in building ADUs above existing garages, handling structural assessment, permits, zoning compliance, utility installation, and interior finishes to deliver functional, code-compliant living spaces that add property value.

Other cities in California

What you need to know

ADU Contractors in Downey, CA: Building in the Birthplace of the Space Shuttle

Downey, California, is a historically rich city in Los Angeles County, famously known as the location where NASA's Space Shuttle was built. Today, this vibrant city of approximately 113,000 residents is experiencing a surge in Accessory Dwelling Unit (ADU) construction, as homeowners look to maximize their property value and address Southern California's ongoing housing shortage. Hiring experienced ADU contractors in Downey, CA is essential to navigating the city's specific building requirements and making the most of your investment.

Understanding Downey's ADU Regulations and Zoning Requirements

As part of Los Angeles County's broader jurisdiction, Downey follows both California state ADU laws and its own local municipal codes. Since California's landmark ADU legislation took effect, cities like Downey must permit ADUs on single-family and multifamily residential lots. Key regulations that your ADU contractor must be familiar with include:

What to Look for in a Qualified ADU Contractor in Downey

Choosing the right ADU builder in Downey means finding a licensed contractor who understands both state law and local permitting processes through the Downey Community Development Department. A qualified contractor should handle everything from architectural design and permit applications to foundation work, utility connections, and final inspections. Look for contractors who are licensed by the California Contractors State License Board (CSLB) and have a proven track record of completed ADU projects in the greater Los Angeles area.

Types of ADUs Popular in Downey

Given Downey's mix of post-war single-family homes and larger residential lots, several ADU types are particularly well-suited to the area:

Start Your Downey ADU Project Today

With rising property values and strong rental demand throughout the Los Angeles metropolitan area, building an ADU in Downey is a smart long-term investment. Work with a trusted, local ADU contractor in Downey, California to ensure your project meets all code requirements, stays on budget, and adds lasting value to your property.

ADU Contractors near Downey, CA