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Junior ADU (JADU) near Fullerton, CA
Aspace Studios
p.o. box 851, Glendora, CA 91741 17.5 milesAspace Studios is an LA-based design-build firm specializing in ADUs and residential expansions. They handle detached, attached, garage conversion, and JADU projects, guiding homeowners through design, permitting, and construction.
read moreLong Beach Elite ADU Solutions
245 East 3rd Street, Long Beach, CA 90802 16.5 milesLong 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.
read moreADU Builders CA
6464 Sunset Boulevard, Los Angeles, CA 90028 27.4 milesADU Builders is a licensed Los Angeles ADU contractor with 15 years of experience. They offer detached, attached, garage conversion, and JADU construction, managing permits, design, and inspections per California ADU building codes.
read moreLevel Up Contractor
6700 Fallbrook Avenue, West Hills, CA 91307 44.6 milesLevel Up Contractor is an ADU builder in Los Angeles offering garage conversions, detached ADUs, and JADUs. Services include full permitting, design-build, and LADBS coordination. Costs range from $100K to $450K depending on project type.
read moreStructura Remodeling
1702 South Robertson Boulevard, Los Angeles, CA 90035 24 milesStructura Remodeling is an LA-based licensed ADU contractor specializing in Accessory Dwelling Units, garage conversions & JADUs. Costs range $115K–$145K. Financing options include HELOC & construction loans. Free consultation available.... read more
ORO Coast Builders
7129 Forest Hills Road, Los Angeles, CA 91307 46.3 milesORO Coast Builders is an ADU contractor in Los Angeles & the Bay Area with 25+ years of experience. They build detached ADUs, garage conversions, basement conversions & JADUs—fully custom, no prefab.
read moreUS Modular Inc.
579 West County Line Road, Calimesa, CA 92320 49.5 milesUS 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 moreUADU
1702 S. Robertson Blvd. #177, Los Angeles, CA 90035 28.8 milesUADU is a California ADU contractor offering garage conversions, detached, attached, and two-story ADUs. They handle design, permits, and construction. Free feasibility checks available. Projects typically take 4–6 months.
read moreOtto ADU
2926 Denby Avenue, Los Angeles, CA 90039 25.2 milesOtto ADU is a licensed Los Angeles ADU builder specializing in garage conversions, detached ADUs, JADUs & granny flats. Serving LA County with 100+ completed units, adding avg. $185K in home value.
read moreReef Builders Inc
6320 Topanga Cyn. Blvd, Woodland Hills, CA 91367 44 milesReef 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
Xavier Design Group
11595 Autumn Sage Avenue, Temecula, CA 91752 23.9 milesAn 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.
read moreThe ADU Pro
15338 Central Avenue, Chino, CA 91710 15.1 milesThe ADU Pro® is a licensed ADU contractor in Chino, CA, serving Fontana and Southern California. Specializing exclusively in ADU construction, they offer detached ADUs, garage conversions, and granny flats with a lifetime transferable warranty.read more
CentrePoint Construction Inc.
21133 Victory Boulevard, Canoga Park, CA 91303 44.9 milesCentrePoint Construction Inc. offers turnkey ADU construction and garage conversions in Los Angeles. Services include detached ADUs, JADUs, design, permits, and city approvals—ideal for rental income or family housing.
read moreJay Remodeling
15219 Sunset Boulevard, Los Angeles, CA 90272 33.5 milesJay Remodeling is a licensed ADU contractor in Los Angeles offering attached, detached, garage conversion, basement, and Junior ADUs. They handle design, permitting, and construction, helping homeowners add rental income or family space while boos... read more
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What you need to know
Searching for top Junior ADU (JADU) ADU Contractors in Fullerton, 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 Fullerton 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.
Fullerton 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 Fullerton, California, and get started today.