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Junior ADU (JADU) in California
Intelligent Choice Builders
1437 Park Avenue, San Jose, CA 95126Intelligent Choice Builders is a licensed Bay Area ADU contractor serving Palo Alto, Cupertino, San Jose & Sunnyvale. They build detached ADUs, garage conversions, granny flats & more, managing permits, design & construction end-to-end.
read moreADU Gurus
450 South Melrose Drive, Vista, CA 92081ADU Gurus™ is a California ADU builder since 2020, offering full-service design, permitting, and construction for granny flats, garage conversions, JADUs, and detached ADUs up to 1,200 sq ft on single-family and multi-family lots.
read moreEG CONSTRUCTION | ADU Builder San Diego
2434 Fenton Street, Chula Vista, CA 91914EG Construction is a trusted San Diego ADU builder offering full-service design, permits & construction. They provide a Price Guarantee & 60-Day Completion Guarantee. Serving all of San Diego County. License #864642.
read moreBeach Builders Custom Homes
13001 Seal Beach Boulevard, Seal Beach, CA 90740Beach 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 $1,200–$1,600/month.
read moreLNL Construction
8698 Elk Grove Blvd, Elk Grove, CA 95624LNL Construction is a Sacramento ADU contractor offering full-service builds, from design to completion. Founded by Landon Linville with 30+ years experience, they handle permits, zoning, and all ADU types. Costs range from $150K to $300K+.
read morePotato Construction
8326 East Valley Boulevard, Rosemead, CA 91770Potato Construction Inc., based in Rosemead, CA, is a licensed ADU contractor with 15+ years of experience. They build detached ADUs, garage conversions, attached ADUs, and JADUs across the San Gabriel Valley and greater Los Angeles area.
read moreDowney ADU Builders
8607 Imperial Highway, Downey, CA 90242Artisan Builders Construction
3369 Shearer Ave, Cayucos, CA 93430Artisan Builders Construction builds ADUs in San Luis Obispo County, CA. Services include detached ADUs, attached units, garage conversions & JADUs. They manage planning, permitting, construction & inspections with transparent pricing.
read moreCornejos Builders
8909 Elmont Avenue, Downey, CA 90240Cornejos 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.
read moreAlpha1 Builders
3147 Dwight Road, Elk Grove, CA 95758Alpha1 Builders in Elk Grove, CA specializes in ADU construction, including garage conversions, attached, detached, junior, and multi-tenant ADUs. They manage design, permitting, and build, helping homeowners add value and rental income.
read moreGolden View Renovation
1545 Berger Drive, San Jose, CA 95112Golden View Renovation offers ADU design, room additions & full construction services in San Jose & the Bay Area. Services include permits, JADUs, remodeling & free consultations for homeowners seeking to expand living space.
read moreKing Home Remodeling
1012 West Beverly Boulevard, Montebello, CA 90640King 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.
read moreUS Modular Inc.
579 West County Line Road, Calimesa, CA 92320US Modular Inc. is a trusted ADU builder in Riverside County, CA, with 35+ years of experience. They offer prefab ADUs, garage conversions & casitas starting at $150,000, completed in 6–9 months.
read moreFirst Choice Home Builders
10620 Treena Street, San Diego, CA 92131First Choice Home Builders is a licensed San Diego ADU contractor with 15+ years of experience. They offer full-service ADU construction, including detached ADUs, garage conversions, and JADUs, with permit handling and flexible financing options.
read moreOther cities in California
- North Highlands
- Sacramento
- North Hollywood
- Agoura Hills
- Encino
- Los Angeles
- Tarzana
- Seal Beach
- Sherman Oaks
- Long Beach
- Hollywood
- Glendale
- Valley Village
- Pasadena
- Downey
What you need to know
Searching for top Junior ADU (JADU) ADU Contractors in California? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Junior ADU (JADU) ADU Contractor in California ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Junior ADU (JADU) professionals can guide you through every step.
California homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Junior ADU (JADU) experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Junior ADU (JADU) ADU Contractors in California, and get started today.