ADU Contractors near San Jose, CA
AKD Homes
3518 Arden Rd, Hayward, CA 94545
26.4 miles
AKD Homes is a Bay Area ADU contractor with 20+ years of experience. They offer full-service ADU design and build, including detached ADUs, custom designs, and conversions from Berkeley to San Jose.
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CDU Inc.
#595 San Ramon Valley Blvd, Danville, CA 94526
37.3 miles
CDU Inc. offers expert ADU construction & remodeling in the Greater Bay Area. Services include new builds, garage conversions, electrical, plumbing & custom design to boost property value & functionality.
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Kaplan Architects
49 Zoe Street, San Francisco, CA 94107
44.7 miles
Kaplan Architects added a 280 sq ft ADU to an existing garage in Crocker Highlands, Oakland. Built into a hillside, it features a kitchenette, full bath, and Tudor-style exterior, serving as office, studio, or rental unit.
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Urban Building Workshop
130 Bush Street, San Francisco, CA 94104
45.4 miles
Urban Building Workshop is a full-service architecture firm in the Bay Area specializing in custom homes, remodels, and ADUs. Experts in Marin County, San Francisco, and Sonoma County permitting, they deliver efficient, light-filled designs.
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Vitalize Build
3120 Scott Blvd, Suite 130, Santa Clara, CA 95054
8.2 miles
Vitalize Build is a Bay Area ADU contractor offering design and construction services for detached ADUs, garage conversions, and in-law suites. They provide preapproved, predesigned, and custom layouts ranging from 238 to 1,200 sq ft.
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Romy Construction Inc
612 Miller Avenue, South San Francisco, CA 94080
39.5 miles
Adapt Dwellings
5944 Claremont Avenue, Oakland, CA 94618
43.8 miles
ADUs add rental income & property value. Services include garage conversions, detached ADUs, JADUs & granny flats. ADU Feasibility Studies cover code, utilities & ROI. Architectural services via Adapt Dwellings ensure smooth approval to construction.
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Green Bay Remodeling
1415 Oakland Boulevard, Walnut Creek, CA 94596
43 miles
Green Bay Remodeling offers ADU construction in Palo Alto, CA, including detached units, garage conversions, basement units & JADUs. ADUs boost property value, generate rental income & support multigenerational living.
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HBC Construction
41060 High Street, Fremont, CA 94538
17.3 miles
HBC Construction, based in Fremont, CA, specializes in ADU building, garage conversions, new homes & additions across the Bay Area. Licensed, code-compliant, full-service from planning to completion.
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Tucan Builder
50 Woodside Plaza, Suite 814, Redwood City, CA 94601
23.6 miles
Tucan Builder is a family-owned general contractor in Redwood City, CA, serving San Mateo County. Specializing in ADU construction, room additions, kitchen remodeling, and home renovations, they bring 30+ years of combined experience.
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Eco Scale Construction
Sunnyvale, CA 94085
10.9 miles
Eco Scale Construction builds ADUs in Sunnyvale, Los Altos & Palo Alto, CA. Services include detached ADUs, garage conversions & JADUs. Costs range from $80K–$400K+. Fully compliant with California ADU regulations.
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Clarity Construction
111 North Market Street, San Jose, CA 95113
3.6 miles
Clarity Construction is a Bay Area contractor specializing in ADUs, home additions, and remodeling in Sunnyvale, Palo Alto, and South San Francisco. Services include backyard ADU builds, in-law suites, permits, and kitchen remodels.
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Manzanita Design Build
408 48th Street, Oakland, CA 94609
43.2 miles
Manzanita Design Build is an East Bay ADU contractor specializing in accessory dwelling units. Serving Berkeley, Oakland, Alameda & more. New ADU construction starts ~$300K, 5–8 month build time. Licensed (#1034108) & insured.
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ELS Home Builders
1055 East Brokaw Road, San Jose, CA 95131
6.4 miles
ELS Home Builders specializes in ADU design and construction across San Jose, Palo Alto & the SF Bay Area. Services include granny flats, in-law suites, garage conversions & detached ADUs for multigenerational living.
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New Avenue, Inc
2120 University Avenue, Berkeley, CA 94704
45.6 miles
New Avenue, Inc is a full-service design-build company serving the San Francisco Bay Area and Portland, OR since 2011. They specialize in ADUs, custom homes, renovations, additions, and Enclaves, managing design, permitting, and construction under one roof.
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Other cities in California
What you need to know
Building ADUs in San Jose: Navigating Silicon Valley's Housing Crisis
San Jose is the largest city in Northern California and sits at the heart of Silicon Valley, where skyrocketing housing costs have made Accessory Dwelling Units (ADUs) one of the most practical solutions for homeowners looking to add rental income or housing for family members. With the median home price consistently among the highest in the nation, hiring experienced ADU contractors in San Jose has become increasingly popular as residents look to maximize their property's value and contribute to the city's housing supply goals.
San Jose ADU Regulations and Zoning Requirements
San Jose follows California state ADU laws while also maintaining its own local guidelines. Working with a knowledgeable ADU contractor in San Jose is essential to navigating these rules successfully. Key regulations homeowners should be aware of include:
- Unit size limits: Detached ADUs can be up to 1,200 square feet, while attached ADUs are generally limited to 50% of the primary dwelling's square footage.
- Setback requirements: A minimum 4-foot setback from rear and side property lines is typically required for new detached ADUs.
- Height restrictions: Detached ADUs are generally limited to 16 feet in height, though this can vary by zone.
- Owner-occupancy rules: California law has suspended owner-occupancy requirements for ADUs until 2025, giving San Jose homeowners more flexibility.
- Parking requirements: In many cases, especially near transit corridors, ADU parking requirements are waived entirely.
Types of ADUs San Jose Contractors Commonly Build
Experienced ADU builders in San Jose are well-versed in constructing a variety of unit types to suit different lot sizes and homeowner needs. The most common types include:
- Detached ADUs: Standalone structures in the backyard, offering maximum privacy for both tenant and homeowner.
- Attached ADUs: Units built as an addition to the existing home, sharing at least one wall.
- Garage Conversions: A highly popular option in San Jose, converting an existing garage into a livable space.
- Junior ADUs (JADUs): Units up to 500 square feet created within the existing footprint of the primary residence.
Why Hiring a Local San Jose ADU Contractor Matters
Choosing a local ADU contractor in San Jose means working with professionals who understand the city's specific permitting process through the San Jose Department of Planning, Building and Code Enforcement (PBCE). Local contractors are familiar with the city's pre-approved ADU plan program, which can significantly speed up the permitting timeline. They also understand the unique soil conditions, seismic requirements, and utility connection protocols specific to the South Bay Area.
Whether you're looking to generate rental income, house extended family, or simply increase your property value, partnering with a qualified San Jose ADU contractor is the smartest first step toward a successful build.