ADU Contractors near Fullerton, CA
Ayala Builder Company
#11824, Granada Hills, CA 91344
42.8 miles
Ayala Builder Company in Granada Hills specializes in custom ADU construction, including detached ADUs, granny flats, garage conversions, and in-law suites. They handle design, permitting, construction, and final inspection for code-compliant results.
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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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New Birth Builders
11500 West Olympic Boulevard, Los Angeles, CA 90064
31.4 miles
New Birth Builders believes that a room addition or Garage Conversion is a great way to increase your home’s value and this new space can be used in a variety of ways. For most homeowners adding a room is less cost efficient and stressful than having to sell their home and move to a bigger home.
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DREC Construction Services
15338 Central Avenue, Chino, CA 91710
15.1 miles
DREC Construction Services is a licensed ADU builder in Glendale, CA, with 10+ years of experience. They handle design, permitting, and construction of ADUs for rental income, family housing, and home offices, offering a transferable lifetime warranty.
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Doran Companies LLC
1041 N Cypress St, La Habra, CA 90631
4.8 miles
At 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 expertise ensures a seamless blend of functionality and aesthetics.
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America Green Builders
6601 Alcove Avenue, North Hollywood, CA 91606
32.4 miles
America Green Builders (AGB) is a Los Angeles general contractor with 20+ years of experience offering kitchen remodeling, bathroom renovation, room additions, ADU garage conversions, custom homes, pool construction, and hardwood flooring.
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Daniel's Development Group
22025 San Miguel Street, Woodland Hills, CA 91364
42.6 miles
Daniel's Development Group builds ADUs in Los Angeles, including attached, detached, garage conversions & JADUs. Permits cost ~$6,000. Rental income averages $2,500/month. Free consultations available.
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CarbonShack Design
715 Cypress Avenue, Los Angeles, CA 90065
22.2 miles
CarbonShack Design offers expert ADU design services in Los Angeles, specializing in accessory dwelling units, detached ADUs, granny flats & in-law suites. Carbon-conscious building practices & design-first approach set them apart.
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CCS Inc.
5535 Balboa Boulevard, Encino, CA 91316
38.1 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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Avica Construction & Development Inc
357 West Route 66, Glendora, CA 91740
17.3 miles
Avica Construction & Development Inc is a licensed LA-based ADU contractor building detached ADUs, garage conversions, attached ADUs & JADUs across Los Angeles, Orange County & San Bernardino County, managing design, permits & construction.
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Pomona General Contractors
3191 W Temple Ave Suite 130, Pomona, CA 91768
13.3 miles
Pomona General Contractors offers ADU construction in Pomona, including detached ADUs, attached ADUs, and garage conversions. Services cover permitting, 3D design, energy-efficient builds, and full construction management for granny flats, in-law suites, and backyard cottages.
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Molinar Design
1132 Spence Street, Los Angeles, CA 90023
22.5 miles
Molinar Design is a licensed design-build firm in Los Angeles offering ADUs, garage conversions, custom homes, remodeling, commercial architecture, permit packages, and fire & water damage restoration across Los Angeles County.
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Harding Design & Construction
4040 East Vermont Street, Long Beach, CA 90814
14 miles
Nagar Builders Inc.
6245 Wilshire Boulevard, Los Angeles, CA 90048
28.3 miles
Nagar Builders Inc. is a Los Angeles construction company offering ADU construction, garage conversions, kitchen and bathroom remodeling, room additions, roofing, electrical work, and commercial remodeling since 2019.
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Step Up Builders Inc
16250 Ventura Boulevard, Encino, CA 91436
37.5 miles
Step Up Builders Inc is a Class A licensed ADU contractor in Encino, CA, serving Los Angeles, San Fernando Valley & Inland Empire. 30+ years experience in detached ADUs, garage conversions, JADUs & remodels. Free estimates available.
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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.