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ADU Builders & Contractors in Torrance, CA

Torrance offers South Bay beach proximity at lower costs than Manhattan or Hermosa Beach — averaging $275–$375 per square foot. Post-war homes on generous lots create ideal conditions for backyard ADU construction. California law ensures at least one ADU per lot with no added parking near transit. The aerospace and healthcare job market fuels rental demand. An ADU contractor in Torrance who knows South Bay standards delivers compliant results.

📊 ADU Quick Facts for Torrance

Avg. Cost/sqft

$325-$575

Permit Timeline

4-12 weeks

Max Size

1200 sqft

Setbacks

4ft sides

View Torrance Planning Department →

Top 442 ADU Contractors in Torrance

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#1ROCHFORD CONSTRUCTION

Torrance, CA

Rochford Construction — licensed ADU contractor in Torrance, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (310) 850 4998
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#2CONGDON SEAN

Torrance, CA

Congdon Sean — licensed ADU contractor in Torrance, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (310) 367 8853
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#3ALL CITIES CONTRACTOR CO

Torrance, CA

All Cities Contractor CO — licensed ADU contractor in Torrance, CA. Detached ADU construction. 20+ years experience.

View Profile📞 (310) 913 1841
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#4LEE PAULINE

Torrance, CA

Lee Pauline — licensed ADU contractor in Torrance, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (310) 326 3211
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#5MAX PROP CONSTRUCTION AND DEVELOPMENT

Torrance, CA

Max Prop Construction And Development — licensed ADU contractor in Torrance, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (310) 849 3879
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#6G3 URBAN

Torrance, CA

G3 Urban — licensed ADU contractor in Torrance, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (310) 819 8331
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#7ADVANCED CONTRACTORS INC

Torrance, CA

Advanced Contractors Inc — licensed ADU contractor in Torrance, CA. Detached ADU construction. 46+ years experience.

View Profile📞 (310) 320 3803
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#8AARC CONSTRUCTION INC

Torrance, CA

Aarc Construction Inc — licensed ADU contractor in Torrance, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (424) 522 6278
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#9LENDERS CONSTRUCTION INC

Torrance, CA

Lenders Construction Inc — licensed ADU contractor in Torrance, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (310) 678 0593
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#10MY DREAM HOME CORP

Torrance, CA

MY Dream Home Corp — licensed ADU contractor in Torrance, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (323) 707 2692
View All 442 Contractors →

💰 How Much Does an ADU Cost in Torrance?

Garage Conversion

$80,000 - $195,000

Converting existing garage to living space

Detached ADU

$160,000 - $400,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$4,000 - $13,000

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Torrance

How much does it cost to build an ADU in Torrance?▼
The average cost to build an ADU in Torrance ranges from $160,000 to $400,000, or approximately $325 to $575 per square foot. Garage conversions typically cost $80,000 to $195,000.
How long does it take to get an ADU permit in Torrance?▼
The ADU permit process in Torrance typically takes 4 to 12 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 Torrance?▼
In Torrance, 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 Torrance?▼
Torrance 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 Torrance?▼
No parking is required for ADUs in Torrance 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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