ADU Contractors near Downey, CA
Pure Energy Construction
9301 Corbin Avenue, Northridge, CA 91324
31.1 miles
Pure Energy Construction (License #1066309) is a Northridge, CA general contractor serving Southern California. They specialize in kitchen remodels, bathroom renovations, and ADU construction, including garage conversions and detached units.
read more
Tohill Construction
250 East Easy Street, Simi Valley, CA 93065
43.8 miles
An ADU (accessory dwelling unit) is a secondary home on a single-family property. Tohill Construction builds granny flats, garage conversions & detached ADUs, offering predesigned plans, custom designs, and financing support.
read more
DYM Builders
2372 Morse Avenue, Los Angeles, CA 92614
24 miles
DYM Builders is an ADU contractor in Los Angeles & Orange County, CA, offering design, permitting & construction services for detached ADUs, garage conversions, attached units & tiny homes since 2016.
read more
Superior ADUs
6 Venture, Irvine, CA 92618
29 miles
The Springfield by Superior ADUs is a 2-bed, 2-bath detached ADU with open-concept living, vaulted ceilings, mini-split HVAC, kitchen island, ample storage, and optional ethanol fireplace—ideal as a granny flat or in-law suite.
read more
Coastal Builders
610 E Santa Clara Ave, Santa Ana, CA 92706
19.5 miles
Coastal Builders is a Long Beach, CA ADU contractor specializing in detached, attached, garage conversion, basement, and attic ADUs. They offer design consultation, ADA-compliant builds, and custom units like granny flats and in-law suites.
read more
Romano Builders
14407 Gilmore Street, Van Nuys, CA 91401
25 miles
Romano Builders specializes in ADU construction in Los Angeles, offering detached, attached, garage conversion, and junior ADUs. Costs range $300–$600/sq ft, with rental income potential of $1,500–$4,000+/month.
read more
Velmor Construction
19559 Vanowen Street, Los Angeles, CA 91335
31 miles
Velmor Construction offers full-scope ADU construction in Reseda, covering custom design, permitting, and build. Services include detached ADUs, garage conversions, and in-law suites using quality materials and local code compliance.
read more
Green Tech
5605 Woodman Avenue, Van Nuys, CA 91401
25.4 miles
Green Tech Remodeling offers full-service construction, renovation, and ADU projects including garage conversions, kitchen and bathroom remodels, home additions, flooring, roofing, electrical, plumbing, and more, with 3D design previews included.<... read more
Ofir Construction
20641 Schoolcraft Street, Winnetka, CA 91306
30.6 miles
Ofir Construction Inc. is a Los Angeles ADU contractor with nearly 20 years of experience. They specialize in ADU builds, garage conversions, and in-law suites, managing permits, planning, and construction while following California building codes... read more
California ADU Center INC
7542 Laurel Canyon Boulevard, Los Angeles, CA 91605
18.7 miles
California ADU Center INC specializes in ADU planning, design, and construction across California. Services include detached ADUs, garage conversions, JADUs, granny flats, and in-law suites. They manage permitting and navigate California's ADU reg... read more
Addition Building & Design Inc.
4335 Van Nuys Boulevard, Sherman Oaks, CA 91403
23.8 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
La Tour Builders
23362-G Via Fabricante, Mission Viejo, CA 92691
34.6 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
ADU Certified
4401 Atlantic Avenue, Long Beach, CA 90807
9.5 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.
read more
Huntington Beach Pro ADU Builder
7772 Warner Avenue, Huntington Beach, CA 92647
20.7 miles
Huntington Beach Pro ADU Builder specializes in ADU construction, garage conversions, and detached ADUs. With 20 years of experience and 500+ projects, they offer full design-build services, permit handling, energy-efficient features, and transpar... read more
Beach Builders Custom Homes
13001 Seal Beach Boulevard, Seal Beach, CA 90740
11.9 miles
Beach Builders Custom Homes offers full-service ADU and garage conversion services in Los Angeles and Orange County. From permits to construction, they build granny flats, backyard cottages, and JADUs with smart home tech, earning homeowners $1,20... read more
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:
- Maximum ADU size: Detached ADUs in Downey can typically be up to 1,200 square feet, depending on lot size and zoning.
- Setback requirements: A minimum 4-foot setback from side and rear property lines is generally required for new detached ADUs.
- Height limits: Detached ADUs are generally 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 through January 1, 2025, allowing more flexibility for Downey homeowners.
- Parking requirements: ADUs located within half a mile of public transit may be exempt from additional parking requirements.
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:
- Detached ADUs: Standalone units built in the backyard, offering maximum privacy for tenants or family members.
- Garage Conversion ADUs: Many Downey homes feature older detached garages that can be cost-effectively converted into livable space.
- Junior ADUs (JADUs): Units up to 500 square feet created within the existing footprint of the primary home.
- Attached ADUs: Additions built onto the existing structure, ideal for lots with limited yard space.
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.