Junior ADU (JADU) in California
Tims New Construction
931 Broxton Avenue, Los Angeles, CA 90024
Tims New Construction is a Los Angeles contractor specializing in ADU, Junior ADU, and garage conversions. Services include custom design, permitting, and full builds. They also support SB9 projects, helping homeowners add rental units or family h... read more
ADU Premium - Eco Tiny Houses
3421 Hollis Street, Oakland, CA 94608
ADU Premium builds eco-friendly, RVIA-certified tiny homes and ADA-accessible ADUs. Models range from 90–360 sq ft, starting at $49,200. Includes permits, delivery, and installation. Financing available via RV loans, HELOC, and more.
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Ritz ADU Design Build
7878 Clairemont Mesa Boulevard, San Diego, CA 92111
RITZ ADU Design Build has served San Diego County since 1965, offering full-service ADU construction including granny flats, garage conversions, backyard offices & rental units. Expert planning, 3D design, permitting & builds that boost pr... read more
Xavier Design Group
11595 Autumn Sage Avenue, Temecula, CA 91752
An accessory dwelling unit (ADU) is a secondary home on a single-family lot with kitchen, bath, and sleeping space. Xavier Design Group helps Southern California homeowners build ADUs with trusted contractors and transparent pricing.
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A+ Construction & Remodeling ADU Builders
3612 Madison Ave #33, North Highlands, CA CA 95660
A+ Construction & Remodeling is a top-rated ADU contractor in Greater Sacramento with 30+ years experience. They offer custom ADUs, garage conversions, granny flats & more, managing all permits and zoning compliance. CSLB Licensed #1007869... read more
DHRH Construction
3905 State Street, Santa Barbara, CA 93105
DHRH Construction builds ADUs, guest houses, garage conversions, and casitas in Santa Barbara. They handle detached, attached, junior ADUs, and garage conversions across city, Montecito, and coastal jurisdictions under one contract.
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OC Master ADU Construction
809 East Katella Avenue, Orange, CA 92867
OC Master ADU Construction builds ADUs across Orange County, offering detached units, garage conversions, JADUs & attached additions. Services include design, permitting & full construction management for rental income or family housing.read more
Gather ADU
19849 Nordhoff Street, Los Angeles, CA 91324
Gather ADU is a Los Angeles-based ADU specialist with 10+ years of experience and 127+ completed projects. Services include feasibility analysis, permits, financing, and construction for detached ADUs, garage conversions, attached ADUs, and JADUs ... read more
Alpha1 Builders
3147 Dwight Road, Elk Grove, CA 95758
Alpha1 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.
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US Modular Inc.
579 West County Line Road, Calimesa, CA 92320
US 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.
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Willbii
2158 Huntington Drive, San Marino, CA 91108
Willbii is a California ADU contractor specializing in granny flats, garage conversions, and in-law suites. They guide homeowners from consultation to construction, handling permits and design. ADUs can generate up to $5,000/month in rental income... read more
Framework First ADUs
1610 Moffett Street, Salinas, CA 93905
Framework First is a family-owned ADU builder in Monterey County, CA, with 40+ years of experience. They offer modular ADUs from 450–1,200 sq ft, handling permits, delivery, and installation with transparent pricing.
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Modern Granny Flat San Diego
5727 Adelaide Avenue, San Diego, CA 92115
ModernGrannyFlat is San Diego's ADU & granny flat specialist, offering eco-friendly, affordable accessory dwelling units. Services include garage conversions, detached ADUs, & JADUs, guiding homeowners through design, permits & construction under Cal...
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Ohayon Construction
Los Angeles, CA 90012
Ohayon Construction is a licensed Los Angeles ADU contractor since 2008. They build detached ADUs, garage conversions, attached ADUs & JADUs. Serving Beverly Hills, Santa Monica & more. Free consultation available.
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ADU Builders
6464 Sunset Boulevard, Hollywood, CA 90028
ADU Builders is a licensed Los Angeles ADU contractor with 15 years of experience. They build detached ADUs, garage conversions, attached ADUs, and JADUs, handling permits, design, and inspections for stress-free ADU construction.
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Other cities in California
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.