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ADU Builders & Contractors in San Gabriel, CA

San Gabriel, CA homeowners looking to build an ADU have 154 licensed contractors to choose from, ready to help. Whether you're planning a garage conversion, detached ADU, or junior ADU, finding the right contractor in San Gabriel starts here.

📊 ADU Quick Facts for San Gabriel

Avg. Cost/sqft

$193-$368

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 154 ADU Contractors in San Gabriel

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#1CHEN YU - HSIU KUO

San Gabriel, CA

Chen YU - Hsiu Kuo — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 26+ years experience.

View Profile📞 (626) 523 4975
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#2A CONSTRUCTION BUILDERS

San Gabriel, CA

A Construction Builders — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (408) 887 8430
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#3HDA CONSTRUCTION INC

San Gabriel, CA

Hda Construction Inc — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 5+ years experience.

View Profile📞 (626) 450 5308
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#4S & L CONSTRUCTION

San Gabriel, CA

S & L Construction — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 39+ years experience.

View Profile📞 (626) 233 0219
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#5A A A/C & BUILDER

San Gabriel, CA

A A A/C & Builder — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (626) 278 4521
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#6YANG DANIEL

San Gabriel, CA

Yang Daniel — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (626) 705 4338
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#7SUN MAN-YAT

San Gabriel, CA

Sun Man-Yat — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 31+ years experience.

View Profile📞 (626) 354 3886
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#8WAI TAK CONSTRUCTION INC

San Gabriel, CA

Wai Tak Construction Inc — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (626) 285 7931
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#9ROYAL SERVICE AIR CONDITIONING CORPORATION

San Gabriel, CA

Royal Service Air Conditioning Corporation — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 39+ years experience.

View Profile📞 (626) 281 8848
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#10GUIXING CONSTRUCTION INC

San Gabriel, CA

Guixing Construction Inc — licensed ADU contractor in San Gabriel, CA. Detached ADU construction.

View Profile📞 (626) 277 8919
View All 154 Contractors →

💰 How Much Does an ADU Cost in San Gabriel?

Garage Conversion

$66,500 - $126,500

Converting existing garage to living space

Detached ADU

$143,000 - $318,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,097 - $5,097

Plan check, permits, utility connections

* Costs vary based on size, finishes, site conditions, and contractor. Get quotes from multiple San Gabriel contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in San Gabriel

How much does it cost to build an ADU in San Gabriel?▼
The average cost to build an ADU in San Gabriel ranges from $143,000 to $318,000, or approximately $193 to $368 per square foot. Garage conversions typically cost $66,500 to $126,500.
How long does it take to get an ADU permit in San Gabriel?▼
The ADU permit process in San Gabriel typically takes 60 to 120 weeks. California law requires cities to approve or deny ADU permits within 60 days of receiving a complete application.
What are the ADU size limits in San Gabriel?▼
In San Gabriel, detached ADUs can be up to 1200 square feet. Attached ADUs are limited to 50% of the primary dwelling or 1,200 sqft, whichever is less. Junior ADUs (JADUs) are limited to 500 sqft and must be within the existing home.
What is the setback requirement for ADUs in San Gabriel?▼
San Gabriel requires 4-foot setbacks from side property lines and 4-foot setbacks from rear property lines for new ADU construction. Converted structures (like existing garages) may maintain their current setbacks.
Do I need to provide parking for my ADU in San Gabriel?▼
No parking is required for ADUs in San Gabriel if your property is within half a mile of public transit, in a historic district, part of an existing multi-family building, or if the ADU is a garage conversion. Otherwise, one space may be required.

Also See ADU Contractors In

Los Angeles (3215)San Diego (2582)San Francisco (2170)Sacramento (1551)Riverside (925)Fresno (904)Anaheim (784)Irvine (760)

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