ADU Contractors near Whittier, CA
ADU by Kn Remodeling
19709 Ventura Boulevard, Woodland Hills, CA 91364
35 miles
KN Remodeling is a certified ADU contractor serving Los Angeles, Woodland Hills, Simi Valley & Thousand Oaks. Specializing in detached ADUs, attached ADUs & garage conversions, they handle design, permits & construction with 100+ ADU plans completed.
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All Inclusive ADU
4041 Macarthur Boulevard, Newport Beach, CA 92660
22.9 miles
All Inclusive ADU is a licensed ADU contractor serving Orange, Riverside, Los Angeles & San Diego Counties. They offer full-service ADU construction including detached ADUs, garage conversions & JADUs with fixed pricing and a 365-day warranty.
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Rockwood Homes
10017 Walnut Street, Bellflower, CA 90706
8.4 miles
Rockwood Homes Inc., based in Torrance, CA, specializes in ADU construction, garage conversions, and home remodeling across Los Angeles County, serving cities like Long Beach, Downey, and Whittier.
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Homeplex
421 West Broadway, Long Beach, CA 90802
17.1 miles
Prefab vs. stick-built ADUs explained. Homeplex offers the Clever ADU, an HCD-certified modular unit built all-electric in a factory, saving 5–6 months vs. traditional construction. Costs vary based on site conditions.
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Kirmina Construction
8615 Mesa Oak Drive, Riverside, CA 92508
34.6 miles
Kirmina Construction (License #1124572) is a licensed general contractor in Riverside, CA, offering home additions, ADUs, garage conversions, room extensions, and outdoor living spaces across Riverside, San Bernardino, and Orange County.
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Ultra-Unit Architectural Studio
1327 Loma Avenue, Long Beach, CA 90804
14.5 miles
Ultra-Unit Architectural Studio, based in Long Beach, CA, offers architecture and construction services for ADUs, residential, multifamily, and commercial projects. Led by Cameron Crockett AIA, LEED, with 25+ years experience. Free initial consultations available.
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ADU Designers & Builders
2461 East Orangethorpe Avenue, Fullerton, CA 92831
8.8 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 options.
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The Los Angeles ADU Builders
240 South Beverly Drive, Beverly Hills, CA 90212
23.2 miles
Los Angeles ADU Builders is a licensed ADU contractor in Beverly Hills offering custom ADU design, garage conversions, detached ADUs, JADUs & in-law suites. CSLB certified, fully insured, with expert permit handling & transparent pricing.
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Otto ADU
2926 Denby Avenue, Los Angeles, CA 90039
17.7 miles
Otto 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.
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Los Angeles Advanced ADU Builders
240 South Beverly Drive, Los Angeles, CA 90212
22.7 miles
Los Angeles Advanced ADU Builders offers full-service ADU construction across LA, including garage conversions, detached units, JADUs & prefab ADUs. With 20+ years experience & 500+ builds, they handle design, permits & zoning compliance.
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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.
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IA Builders
10736 Jefferson Blvd, Unit 703, Culver City, CA 90230
21.6 miles
IA Builders is a Los Angeles construction company offering new home builds, remodeling, additions, and ADU construction. Services include garage conversions, detached ADUs, and in-law suites, delivered with quality craftsmanship and transparent pricing.
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L Square Construction
Irvine, CA 92705
19.2 miles
L Square Construction is an ADU contractor serving Los Angeles & Orange County, CA. They offer full-service design-build ADU solutions including detached units, in-law suites, garage conversions, and energy-efficient builds with solar integration.
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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.
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Willbii
2158 Huntington Drive, San Marino, CA 91108
12.3 miles
Willbii 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.
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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.