Attached ADU near Montclair, CA
CCS Inc.
5535 Balboa Boulevard, Encino, CA 91316
46.5 miles
CCS 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.
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Doobek Builders
5308 Derry Avenue, Los Angeles, CA 91301
41.9 miles
Doobek Builders offers home remodeling, large additions, and ADU construction. Services include garage conversions, interior conversions, additions, and ground-up ADU builds—ideal for granny flats, in-law suites, or backyard cottages.
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DB Construction
4555 Valley Boulevard, Los Angeles, CA 90032
39 miles
DB Construction is a full-service ADU contractor in Greater Los Angeles, building detached ADUs, garage conversions, JADUs, in-law suites, and room additions. They manage permits in-house, offering transparent costs and turn-key project completion... read more
Golden ADU
640 S Curson Ave #603, Los Angeles, CA 90036
40.9 miles
Golden ADU, serving Southern California since 2021, specializes in custom ADU construction including garage conversions and detached backyard cottages. They offer flexible financing with no upfront costs, completing most projects in 6–12 months.... read more
ADU Designers & Builders
2461 East Orangethorpe Avenue, Fullerton, CA 92831
19 miles
ADU Designers & Builders is a full-service ADU contractor in Fullerton, CA, offering detached ADUs, garage conversions, attached ADUs & JADUs across Southern California, with expert design, permitting, solar integration & 0% financing ... read more
Buildoly
915 Wilshire Blvd, Los Angeles, CA 90017
32.2 miles
Buildoly is an ADU contractor offering full-service construction for detached ADUs, garage conversions, granny flats, JADUs, and backyard cottages. They manage design, permitting, and building, helping homeowners add rental income or family housin... read more
Snow Construction
6647 Orion Avenue, Los Angeles, CA 91406
45.1 miles
Snow Construction is an LA-based ADU and granny flat builder offering planning, design, and construction services. They help homeowners add secondary units, navigate permits, and understand parking rules under California's 2017 ADU legislation.read more
Legacy Builders LA
Los Angeles, CA
31.2 miles
Legacy Builders LA is a trusted ADU contractor in Los Angeles with 20+ years of experience. They offer ground-up ADUs, JADUs, garage conversions & additions, delivering custom, high-quality accessory dwelling units tailored to each homeowner.<... read more
King Home Remodeling
1012 West Beverly Boulevard, Montebello, CA 90640
24.5 miles
King 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.
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ORR Construction
1977 Obispo Avenue, Signal Hill, CA 90755
32.3 miles
ADUs are secondary units built on existing lots. ORR Construction builds detached ADUs, garage conversions, JADUs & in-law suites in California. Costs range $50–$300/sq ft. California laws like SB 897 simplify the permitting process.
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Lux Construction Group
10850 Wilshire Boulevard, Los Angeles, CA 90024
42.6 miles
Are you looking for the best ADU Contractor in Los Angeles? Having 20+ years of experience, Lux Dev LA offers the most affordable ADU Construction & design services. Let us design and build your new ADU project today. Contact us for a FREE quo... read more
Waconah Construction
616 Edgewood Street, Inglewood, CA 90302
38.1 miles
Waconah Construction builds custom ADUs in West Los Angeles, including backyard cottages, garage conversions, above-garage units, and granny flats. Serving Santa Monica, Venice, Brentwood & Beverly Hills, they guide homeowners through design, ... read more
New Dawn Construction
14900 Ventura Blvd Unit #330, Sherman Oaks, CA 91403
44.1 miles
New Dawn Construction is an ADU contractor specializing in detached ADUs, garage conversions, in-law suites, granny flats, JADUs, and backyard cottages. They guide homeowners through design, permitting, and construction for flexible housing soluti... read more
US Modular Inc.
579 West County Line Road, Calimesa, CA 92320
35.9 miles
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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ADU Garage Experts
2999 Overland Ave. Suite 103, Los Angeles, CA 90064
41.3 miles
ADU Garage Experts, a Southern California structural engineering firm, specializes in ADU planning and drafting. They offer garage conversions from ~$70/sqft, attached and detached ADUs, helping homeowners add rental income or living space.
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Other cities in California
What you need to know
Searching for top Attached ADU ADU Contractors in Montclair, 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 Montclair 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.
Montclair 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 Montclair, California, and get started today.