What is the maximum ADU size allowed in San Gabriel?

Detached ADUs in San Gabriel can be up to 1200 square feet.

ADU Builders & Contractors in San Gabriel, CA

Q: How much does it cost to build an ADU in San Gabriel?

The average cost ranges from $143,000 to $318,000, or $193-368 per square foot.

Q: How long does it take to get an ADU permit in San Gabriel?

The permit process typically takes 60 to 120 weeks in San Gabriel.

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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#1US LONGTON INC

San Gabriel, CA

US Longton Inc — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 15+ years experience.

View Profile 📞 (626) 282 2368

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#2MOU JOHN

San Gabriel, CA

Mou John — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 36+ years experience.

View Profile 📞 (626) 807 6115

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#3MIRACLE DEVELOPMENT INC

San Gabriel, CA

Miracle Development Inc — licensed ADU contractor in San Gabriel, CA. Detached ADU construction. 17+ years experience.

View Profile 📞 (626) 413 9833

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#4DANPING ZHANG

San Gabriel, CA

Danping Zhang — licensed ADU contractor in San Gabriel, CA. Detached ADU construction.

View Profile 📞 (626) 766 0108

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#5YANXIA CONSTRUCTION

San Gabriel, CA

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

View Profile 📞 (626) 672 8751

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#6LI ZHENXING CONSTRUCTION

San Gabriel, CA

LI Zhenxing Construction — licensed ADU contractor in San Gabriel, CA. Detached ADU construction.

View Profile 📞 (510) 759 1211

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#7LA YE CONSTRUCTION INC

San Gabriel, CA

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

View Profile 📞 (626) 230 3403

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#8LW UNITED CONSTRUCTION INC

San Gabriel, CA

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

View Profile 📞 (626) 750 8777

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#9CQUACH CONSTRUCTION

San Gabriel, CA

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

View Profile 📞 (951) 214 3128

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#10NG BILLY CONSTRUCTION

San Gabriel, CA

NG Billy Construction — licensed ADU contractor in San Gabriel, CA. Detached ADU construction.

View Profile 📞 (626) 873 3481

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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