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Detached ADU near San Bernardino, CA
Custom ADU Builder
113 West Santa Fe Avenue, Fullerton, CA 92832 40.7 milesFull-service ADU contractor offering design, permitting, and construction of detached ADUs, attached ADUs, JADUs, and garage conversions. Most builds complete in 3–5 months. Includes quartz countertops, tile showers, and luxury vinyl flooring. Rental prep support available.
read moreJean Prescott Studio
120 Newport Center Dr, Newport Beach, CA 92660 49.5 milesJean Prescott Studio offers ADU design, construction, and home remodeling services in San Clemente. Services include kitchen remodels, bathroom renovations, room additions, permit management, and custom ADU plans for rental income or flexible living.
read moreEZ ADU & Garage Conversion
300 South Harbor Boulevard, Anaheim, CA 92805 41.7 milesEZ ADU & Garage Conversion is a trusted ADU builder and garage conversion contractor in Orange County, CA. They offer custom ADU construction, garage conversions, design, and permitting services for homeowners seeking quality living space solutions.
read moreHerbertson OG
6306 DOWNEY St, Riverside, CA 92509 16.1 milesHerbertson OG is a construction and solar company offering ADU building, remodeling, new construction, roofing, HVAC, and solar panel installation. They serve homeowners, investors, and designers across residential and commercial projects.
read moreCoastal Builders
610 E Santa Clara Ave, Santa Ana, CA 92706 41.6 milesCoastal 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 moreOC Builders Group
600 West Santa Ana Boulevard, Santa Clara, CA 92701 43.1 milesOC Builders Group specializes in ADU construction in California, offering detached ADUs, garage conversions, granny flats & in-law suites. They help homeowners navigate permits, zoning & state regulations to add rental income or housing value.
read moreLA Developing Inc.
8504 Firestone Boulevard, Downey, CA 90241 49.8 milesAn Accessory Dwelling Unit (ADU) adds value, rental income, and flexibility to your property. LA Developing Inc. specializes in ADU construction in Los Angeles, offering garage conversions, detached builds, and attached additions with full project support.
read moreDoran Construction
1041 N Cypress St, La Habra, CA 90631 40.9 milesAt Doran Companies LLC, we specialize in creating accessory dwelling units (ADUs) that are not just spaces, but extensions of your home’s character. Whether you’re considering garage conversions, new construction, or in-law suites, our expertise ensures a seamless blend of functionality and aesthetics.
read moreFoothill Renovators
2541 Charford Street, Glendora, CA 91740 32.8 milesFoothill Renovators offers home remodeling, ADU construction, new builds, and additions. Services include flooring, roofing, electrical, plumbing, and more. They handle permits and full project management for detached ADUs, granny flats, and garage conversions.
read moreOkopod
307 North Euclid Way, Anaheim, CA 92801 41.3 milesOkopod's 215 ft² backyard studio ADU features a dual pitch standing seam roof, Natural Thermowood cladding, aluminum doors, a full bathroom, and an anthracite grey pergola with adjustable louvres and slab flooring.
read moreAvorino
Irvine, CA 92602 39.9 milesAvorino specializes in ADU construction, offering detached, attached, garage conversion, and above-garage units. Projects range from $250K–$400K, covering design, permitting, and build phases over 10–14 months.
read moreParamount Manufactured Sales
11759 Magnolia Avenue, Riverside, CA 92503 16.6 milesParamount Manufactured Sales in Riverside offers Skyline Homes-built ADUs for Southern California homeowners in LA, Orange, Riverside, San Bernardino & San Diego Counties. Models range from 479–849 sq ft. California law now allows detached ADUs up to 1,200 sq ft.
read moreCustom Home Builders Malibu
42400 Winchester Road, Temecula, CA 92590 45.4 milesCustom Home Builders Malibu specializes in ADU construction, backyard Casitas & granny flats. They offer turnkey design-build services, handling permits & compliance with California ADU laws for legal, independent living spaces.
read moreWillbii
2158 Huntington Drive, San Marino, CA 91108 46.8 milesWillbii 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 moreOther cities in California
- Agoura Hills
- Albany
- Anaheim
- Arcata
- Bakersfield
- Berkeley
- Beverly Hills
- Bonita
- Burbank
- Burlingame
- Calabasas
- Calimesa
- Camarillo
- Campbell
- Canoga Park
What you need to know
Searching for top Detached ADU ADU Contractors in San Bernardino, California? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Detached ADU ADU Contractor in San Bernardino 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 Detached ADU professionals can guide you through every step.
San Bernardino homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Detached ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Detached ADU ADU Contractors in San Bernardino, California, and get started today.