ADU Contractors near Whittier, CA
Herbertson OG
6306 DOWNEY St, Riverside, CA 92509
30.4 miles
Herbertson 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 more
Unlimited Construction & Remodeling, Inc
8500 Wilshire Boulevard, Beverly Hills, CA 90211
21.6 miles
Unlimited Construction & Remodeling (UCR), a licensed Beverly Hills contractor, serves LA, Orange & Ventura Counties. Specializing in garage conversions, ADUs & home remodeling, this family-owned firm delivers budget-conscious, code-compliant residential & commercial renovations.
read more
Kol & Co
23431 Blue Bird Dr, Lake Forest, CA 92630
29.7 miles
Kol & Co. is an ADU contractor serving Orange County, West LA & North San Diego. With 15+ years in design-build, they handle detached ADUs, garage conversions, JADUs & more—managing permits, design, and construction under one roof.
read more
CentrePoint Construction Inc.
21133 Victory Boulevard, Canoga Park, CA 91303
37.5 miles
CentrePoint 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 more
Eureka Modular
2553 Sampson Avenue, Corona, CA 92879
26.8 miles
Eureka Modular builds steel frame modular ADUs and single family homes. Steel framing offers durability, design flexibility, and sustainability. Ideal for detached ADUs, backyard cottages, granny flats, and casitas with efficient, precise construction.
read more
NAMA Construction
62 Sundance Dr, Pomona, CA 91766
14.6 miles
NAMA Construction is a family-owned Los Angeles remodeling company with 75 years of experience. Services include ADU construction, kitchen & bathroom remodeling, whole house renovations, flooring, and painting across Greater LA.
read more
G&M Home Remodeling
4902 Coldwater Canyon Avenue, Sherman Oaks, CA 91423
26.2 miles
G&M Home Remodeling is a trusted ADU contractor in Los Angeles offering detached ADUs, garage conversions, granny flats, and JADUs. Based in Sherman Oaks, they handle permitting, design, and construction across the greater LA area.
read more
Aligcus
1841 South San Gabriel Boulevard, San Gabriel, CA 91776
9.9 miles
Aligcus is an experienced ADU contractor specializing in detached ADUs, garage conversions, JADUs, granny flats, in-law suites, and backyard cottages. They guide homeowners through permitting and construction for all accessory dwelling unit projects.
read more
Saunders Construction Renovation Inc
2463 W Carson Street, Torrance, CA 91310
19.8 miles
Saunders Construction Renovation Inc offers ADU construction in Torrance, Redondo Beach & Palos Verdes Peninsula. Services include detached ADUs, garage conversions & granny flats. BBB A+ rated South Bay contractor.
read more
AD Remodeling & Construction
7040 Darnoch Way, West Hills, CA 91307
39.3 miles
AD Remodeling & Construction offers room additions and ADU services, including design, permitting, and construction. They build detached ADUs, in-law suites, granny flats, and room additions tailored to client needs and local regulations.
read more
Alto Builders
5450 Lake Lindero Dr., Agoura Hills, CA 91301
45.7 miles
Alto Builders specializes in ADU construction in Los Angeles & Ventura County. Services include detached ADUs, garage conversions & JADUs. Costs range $300–$600/sq ft, with timelines of 5–12 months.
read more
ADU1
19326 Ventura Boulevard, Los Angeles, CA 91356
32.3 miles
ADU1 helps multifamily property owners add ADUs to boost income. Add up to 25% more units plus 2 detached ADUs. Services include a $250 feasibility report, full design-build, and free weekly Q&A sessions every Wednesday.
read more
DECLA Inc.
20850 Sorrento Lane, Porter Ranch, CA 91326
38.5 miles
DECLA Inc. is a multidisciplinary architecture, engineering, real estate, and construction firm developing ADU services, including detached ADUs, garage conversions, granny flats, in-law suites, JADUs, and backyard cottages. Coming soon.
read more
Custom ADU Builder
113 West Santa Fe Avenue, Fullerton, CA 92832
8.7 miles
Full-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 more
Harding Design & Construction
4040 East Vermont Street, Long Beach, CA 90814
15 miles
Other cities in California
What you need to know
Building ADUs in Whittier, CA: A City Rooted in History and Growth
Whittier, California, famously known as the birthplace of President Richard Nixon, is a vibrant city in Los Angeles County with a rich architectural heritage and a growing demand for housing. As housing costs continue to rise across Southern California, many Whittier homeowners are turning to Accessory Dwelling Units (ADUs) as a smart solution to add living space, generate rental income, or house extended family members. Working with experienced ADU contractors in Whittier, CA is essential to navigating the city's specific building requirements and maximizing your property's potential.
Understanding Whittier's ADU Regulations and Zoning Requirements
Whittier follows California state ADU laws while also enforcing its own local guidelines through the City of Whittier Community Development Department. Homeowners and contractors must be familiar with these rules before breaking ground. Key regulations include:
- Setback requirements: ADUs must generally maintain a minimum 4-foot setback from rear and side property lines.
- Maximum unit size: Detached ADUs can be up to 1,200 square feet, while Junior ADUs (JADUs) are capped at 500 square feet.
- Height limits: Detached ADUs are typically limited to 16 feet in height, though this can vary based on proximity to public transit.
- Owner-occupancy rules: As of 2020, California state law has suspended owner-occupancy requirements for ADUs until 2025, allowing more flexibility for Whittier property owners.
- Parking: In many cases, no additional parking is required for ADUs located within half a mile of public transit.
Types of ADUs Commonly Built in Whittier
Whittier's diverse mix of single-family homes, bungalows, and larger lots makes it well-suited for a variety of ADU types. Skilled ADU contractors in Whittier commonly build:
- Detached ADUs: Standalone structures built in the backyard, ideal for rental income or multigenerational living.
- Attached ADUs: Units added directly to the existing home, sharing at least one wall.
- Garage Conversions: Transforming existing garages into livable spaces, a popular and cost-effective option in Whittier neighborhoods.
- Junior ADUs (JADUs): Smaller units created within the existing footprint of a home, often from a bedroom or interior space.
Why Hiring a Local Whittier ADU Contractor Matters
Choosing a licensed and experienced ADU contractor in Whittier, CA ensures your project complies with both state and local codes, passes inspections, and is completed on time and within budget. Local contractors understand the nuances of Whittier's permit process through the Community Development Department, are familiar with the city's soil conditions and neighborhood aesthetics, and can help streamline approvals. Whether you're in the Uptown Whittier area or a quieter residential neighborhood, a knowledgeable contractor will guide you from design through final inspection, making your ADU investment a success.