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Attached ADU near Diamond Bar, CA
IBA Builders
13743 Ventura Boulevard, Sherman Oaks, CA 91423 37.5 milesGarage conversion to ADU in Los Angeles requires structural upgrades, permits, and utility connections. IBA Builders evaluates ceiling height, slab condition, setbacks, and utility access before design begins, ensuring code compliance and accurate... read more
YOR Construction & Investments
12135 Miranda Street, Valley Village, CA 91607 35.9 milesAn ADU (accessory dwelling unit) is a secondary home on a residential lot. Garage conversion ADUs are cost-effective, blending with existing homes. YOR Construction & Investments specializes in Los Angeles ADU garage conversions.
read moreJoel & Co. Construction
11693 San Vicente Boulevard, Los Angeles, CA 90049 27.8 milesJoel & Co. Construction, serving Los Angeles since 1983, offers expert residential & commercial construction, including custom homes, kitchen & bathroom remodels, ADUs, room additions, and general contracting across Beverly Hills, Sant... read more
DYM Builders
2372 Morse Avenue, Los Angeles, CA 92614 22 milesDYM 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 moreKatz Design & Builders inc
316 Culver Boulevard, Playa Del Rey, CA 90293 36.3 milesKatz Design & Builders Inc offers full-service ADU construction across Los Angeles and Orange County. Services include detached ADUs, garage conversions, attached ADUs, and JADUs, all built to California Title 24 and local zoning standards.read more
Downey ADU Builders
8607 Imperial Highway, Downey, CA 90242 18.3 milesSilver Hammer Builders
11150 West Olympic Boulevard, Los Angeles, CA 90064 35.8 milesSilver Hammer Builders is a licensed ADU contractor in Los Angeles with 15+ years of experience. Services include garage conversions, detached ADUs, JADUs & in-law suites. Full project management, permits, and free consultations offered.
read moreLandmark Building Inc
Los Angeles, CA 90027 28.2 milesLandmark Building Inc is a Los Feliz-based general contractor serving Los Angeles neighborhoods including Hollywood Hills, Silverlake & Echo Park. They offer residential & light commercial remodeling, ADUs, garage conversions & free es... read more
CCS Inc.
5535 Balboa Boulevard, Encino, CA 91316 40.9 milesCCS Inc. offers ADU construction, garage conversions, remodeling & permit services in Long Beach, CA. Costs range from $100K–$400K+, with timelines of 4–14 months. Free consultations available for eligible residential properties.
read moreVision Home Remodeling
7717 Owensmouth Avenue, Canoga Park, CA 91304 47.1 milesVision Home Remodeling Inc. offers full-service ADU construction in Los Angeles, including detached units, attached dwellings, casitas, and rental-ready granny flats. Services cover design, permitting, and ground-up builds tailored to LA zoning la... read more
LPI Construction
149 Poinsettia Avenue, Monrovia, CA 91016 14.8 milesLPI Construction offers custom homes, ADU construction, and solar electric systems. Services cover hillside builds, detached/attached ADUs, garage conversions, and sustainable building practices, managing full project lifecycles from permits to co... read more
Concierge Home Remodeling
5950 Canoga Avenue, Woodland Hills, CA 91367 46.5 milesConcierge Home Remodeling is a Southern California ADU contractor offering full-service design, permitting, and construction. They build detached ADUs, garage conversions, granny flats, and in-law suites, boosting property value with quality craft... read more
Doran Companies LLC
1041 N Cypress St, La Habra, CA 90631 9.4 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 experti... read more
Angelus Construction
330 Arden Avenue, Glendale, CA 91203 27.5 milesAngelus Construction is a Los Angeles ADU contractor with 30+ years of experience. They offer full-service ADU design, permitting, and construction, plus residential remodeling across Los Angeles and Ventura Counties.
read moreOther cities in California
- North Highlands
- Sacramento
- North Hollywood
- Agoura Hills
- Encino
- Los Angeles
- Tarzana
- Long Beach
- Hollywood
- Glendale
- Valley Village
- Pasadena
- Burbank
- Downey
- Beverly Hills
What you need to know
Searching for top Attached ADU ADU Contractors in Diamond Bar, California? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Attached ADU ADU Contractor in Diamond Bar 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 Attached ADU professionals can guide you through every step.
Diamond Bar homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Attached ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Attached ADU ADU Contractors in Diamond Bar, California, and get started today.