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ADU Builders & Contractors in Commerce, CA

Commerce, CA is home to 23 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Commerce's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Commerce

Avg. Cost/sqft

$197-$372

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 23 ADU Contractors in Commerce

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#1UNITED BUILDERS USA

Commerce, CA

United Builders Usa — licensed ADU contractor in Commerce, CA. Detached ADU construction.

View Profile📞 (323) 500 9729
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#2CALSTATE ENERGY INC

Commerce, CA

Calstate Energy Inc — licensed ADU contractor in Commerce, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (310) 967 2010
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#3VARELA JUSTINO

Commerce, CA

Varela Justino — licensed ADU contractor in Commerce, CA. Detached ADU construction. 20+ years experience.

View Profile📞 (323) 208 1685
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#4HALEY INDUSTRIAL COATINGS & LININGS INC

Commerce, CA

Haley Industrial Coatings & Linings Inc — licensed ADU contractor in Commerce, CA. Detached ADU construction. 32+ years experience.

View Profile📞 (323) 588 8086
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#5DIAZ ANTONIO ELECTRIC

Commerce, CA

Diaz Antonio Electric — licensed ADU contractor in Commerce, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (323) 548 4803
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#6ALMIRA RESTORATION & CONSTRUCTION

Commerce, CA

Almira Restoration & Construction — licensed ADU contractor in Commerce, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (562) 694 9700
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#7MELCHOR ENRIQUE

Commerce, CA

Melchor Enrique — licensed ADU contractor in Commerce, CA. Detached ADU construction. 12+ years experience.

View Profile📞 (323) 382 3995
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#8AMBER BUILDERS CO

Commerce, CA

Amber Builders CO — licensed ADU contractor in Commerce, CA. Detached ADU construction.

View Profile📞 (310) 302 7222
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#9CASAS & CASAS CONSTRUCTION INC

Commerce, CA

Casas & Casas Construction Inc — licensed ADU contractor in Commerce, CA. Detached ADU construction.

View Profile📞 (213) 565 1485
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#10EXPERT HOME BUILDERS INC

Commerce, CA

Expert Home Builders Inc — licensed ADU contractor in Commerce, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (323) 503 2344
View All 23 Contractors →

💰 How Much Does an ADU Cost in Commerce?

Garage Conversion

$68,500 - $128,500

Converting existing garage to living space

Detached ADU

$147,000 - $322,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,111 - $5,111

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Commerce

How much does it cost to build an ADU in Commerce?▼
The average cost to build an ADU in Commerce ranges from $147,000 to $322,000, or approximately $197 to $372 per square foot. Garage conversions typically cost $68,500 to $128,500.
How long does it take to get an ADU permit in Commerce?▼
The ADU permit process in Commerce 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 Commerce?▼
In Commerce, 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 Commerce?▼
Commerce 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 Commerce?▼
No parking is required for ADUs in Commerce 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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