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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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#1WANG ZHIPENG CONSTRUCTION

San Gabriel, CA

Wang Zhipeng Construction — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (909) 235 6696
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#2KISS CONSTRUCTION GROUP

San Gabriel, CA

Kiss Construction Group — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 11+ years experience.

View Profile📞 (626) 689 0149
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#3HARTMAN CONSTRUCTION

San Gabriel, CA

Hartman Construction — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 31+ years experience.

View Profile📞 (626) 614 6622
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#4WELLS DEVELOPMENT AND CONSTRUCTION INC

San Gabriel, CA

Wells Development And Construction Inc — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 31+ years experience.

View Profile📞 (626) 926 1689
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#5AMHURST CONSTRUCTION

San Gabriel, CA

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

View Profile📞 (626) 487 7009
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#6WALTON CONSTRUCTION SPECIALTIES

San Gabriel, CA

Walton Construction Specialties — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 30+ years experience.

View Profile📞 (626) 201 8000
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#7U & G CONSTRUCTION INC

San Gabriel, CA

U & G Construction Inc — licensed ADU contractor in San Gabriel, CA. Detached ADU construction.

View Profile📞 (978) 906 8888
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#8WONG TIMMOND

San Gabriel, CA

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

View Profile📞 (626) 329 3595
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#9JADE CONSTRUCTION LLC

San Gabriel, CA

Jade Construction Llc — licensed ADU contractor in San Gabriel, CA. Detached ADU construction.

View Profile📞 (808) 255 5716
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#10ROYAL UPGRADES

San Gabriel, CA

Royal Upgrades — licensed ADU contractor in San Gabriel, CA. Detached ADU construction.

View Profile📞 (626) 502 2901
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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