ADU Contractors near Fullerton, CA
View ADU Builders
18740 Ventura Boulevard, Tarzana, CA 91356
40.4 miles
View ADU Builders is a trusted Los Angeles ADU contractor specializing in detached ADUs, garage conversions, attached ADUs & in-law suites. Costs range from $80K–$350K+. Free 3D design consultations available.
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Avorino
360 E 1st St #355, Tustin, CA 92780
11.4 miles
Avorino 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.
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Ataman Studio
13151 Fountain Park Drive, Los Angeles, CA 90094
29.5 miles
Ataman Studio is a trusted ADU contractor in Los Angeles, serving all of California. Full-service design, permitting, and construction for detached ADUs, garage conversions, and in-law units, with compliance to local zoning and state regulations.
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1 Degree Construction
13107 Ventura Boulevard, Studio City, CA 91604
32.5 miles
1 Degree Construction is a Los Angeles ADU builder & home addition contractor. Services include detached ADUs, garage conversions, second-story additions & in-law suites. Projects range from $30K to $150K+.
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Progressive Builders LA
7445 Topanga Canyon Boulevard, Canoga Park, CA 91303
44.4 miles
Progressive Builders LA offers full-service ADU construction in Los Angeles, handling detached ADUs, garage conversions, granny flats & in-law suites. Custom design, quality materials, on-time delivery & accessible pricing for all project sizes.
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Level Up Contractor
6700 Fallbrook Avenue, West Hills, CA 91307
44.6 miles
Level Up Contractor is an ADU builder in Los Angeles offering garage conversions, detached ADUs, and JADUs. Services include full permitting, design-build, and LADBS coordination. Costs range from $100K to $450K depending on project type.
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MDM General Contractors
1236 North Fairfax Avenue, Los Angeles, CA 90046
28.3 miles
MDM General Contractors offers full-service ADU construction in San Bernardino, including garage conversions, granny flats & detached ADUs. Licensed & insured, they handle design, permits, and build from start to finish.
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Green Tech
5605 Woodman Avenue, Van Nuys, CA 91401
36.8 miles
Green Tech Remodeling offers full-service construction, renovation, and ADU projects including garage conversions, kitchen and bathroom remodels, home additions, flooring, roofing, electrical, plumbing, and more, with 3D design previews included.
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Blue Dog Construction
4199 Flat Rock Road, Riverside, CA 92505
25 miles
Delcoi
21650 Oxnard Street, Woodland Hills, CA 91367
43.6 miles
Delcoi is an ADU contractor specializing in granny flats, casitas, in-law suites, detached ADUs, garage conversions, and backyard cottages. They handle permits, regulatory compliance, and quality construction to maximize living space and rental income potential.
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AAHA Studio
9856 Vidor Drive, Los Angeles, CA 90035
29.7 miles
AAHA Studio is a Los Angeles architecture and interior design firm specializing in residential projects, including ADUs. They offer expertise in accessory dwelling units, granny flats, and in-law suites, blending historic character with modern design.
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Bela Development
1023 Abbot Kinney Boulevard, Venice, CA 90291
32 miles
Bela Development is an LA-based design-build firm with 15+ years specializing in ADU construction, garage conversions, detached ADUs, and JADUs. They manage design, permitting, and build under one roof, delivering legal living spaces that boost property value by 20–30%.
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Doobek Builders
5308 Derry Avenue, Los Angeles, CA 91301
34.7 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
27.4 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.
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The ADU Guru
3438 Troy Drive, Los Angeles, CA 90068
29.8 miles
The ADU Guru is a full-service ADU contractor in Los Angeles & Orange County, specializing in garage conversions, detached ADUs & granny flats. With 100+ units completed, they offer $0 down, free 3D design & tenant placement.
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Other cities in California
What you need to know
ADU Contractors in Fullerton, CA: Building in a Historic and Vibrant City
Fullerton, California, is a city known for its rich historic downtown, thriving arts scene, and a large student population thanks to California State University, Fullerton (CSUF). With a growing demand for housing and a diverse mix of older single-family homes and newer developments, ADU contractors in Fullerton are in high demand. The city's unique blend of historic neighborhoods and modern development makes accessory dwelling units (ADUs) an attractive solution for homeowners looking to add rental income, house family members, or increase property value.
Fullerton ADU Regulations and Zoning Requirements
ADU contractors working in Fullerton must navigate both California state ADU laws and the City of Fullerton's local ordinances. Fullerton falls under the jurisdiction of Orange County and follows state guidelines under AB 68, AB 881, and SB 13, which streamlined ADU approvals across California. Key regulations that experienced Fullerton ADU contractors must be familiar with include:
- Setback requirements: ADUs in Fullerton generally require a minimum 4-foot side and rear setback.
- Height limits: Detached ADUs are typically limited to 16 feet in height, though this can vary based on proximity to the main dwelling.
- Maximum ADU size: Detached ADUs can be up to 1,200 square feet, while attached ADUs are limited to 50% of the primary dwelling's square footage.
- Owner-occupancy rules: As of 2020, California law removed owner-occupancy requirements for ADUs built before 2025, giving Fullerton homeowners more flexibility.
- Parking requirements: In many cases, especially near transit corridors, parking requirements for ADUs may be waived.
Types of ADUs Built by Fullerton Contractors
Skilled ADU builders in Fullerton offer a variety of ADU types to suit different property layouts and homeowner needs. Given the prevalence of older ranch-style homes and bungalows in neighborhoods like Sunny Hills and Raymond Hills, garage conversions and detached backyard cottages are especially popular. Common ADU types include:
- Detached ADUs (backyard cottages or casitas)
- Attached ADUs (additions to the primary home)
- Garage conversion ADUs (converting existing garages into living spaces)
- Junior ADUs (JADUs) — up to 500 sq ft within the existing home footprint
Why Hire a Local Fullerton ADU Contractor?
Hiring a local ADU contractor in Fullerton ensures that your project is handled by professionals who understand the City of Fullerton's permitting process, building department requirements, and inspection protocols. Local contractors are familiar with the Fullerton Building and Safety Division and can efficiently manage permit applications, plan checks, and construction timelines. Whether you're near the CSUF campus looking to create student housing or in a quiet residential neighborhood seeking a multigenerational living solution, a qualified Fullerton ADU contractor can help you maximize your property's potential while staying fully compliant with all local and state regulations.