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ADU Builders & Contractors in Gardena, CA

Building an ADU in Gardena? You'll find 183 licensed contractors in the area, ready to help. Gardena's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Gardena

Avg. Cost/sqft

$201-$376

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 183 ADU Contractors in Gardena

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#1EFFICIENT CONSTRUCTION

Gardena, CA

Efficient Construction — licensed ADU contractor in Gardena, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (310) 400 7647
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#2ALEXANDER CONSTRUCTION AND ENGINEERING

Gardena, CA

Alexander Construction And Engineering — licensed ADU contractor in Gardena, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (310) 715 1451
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#3H G M CONSTRUCTION INC

Gardena, CA

H G M Construction Inc — licensed ADU contractor in Gardena, CA. Detached ADU construction. 43+ years experience.

View Profile📞 (310) 283 4318
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#4RICH ELECTRIC

Gardena, CA

Rich Electric — licensed ADU contractor in Gardena, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (310) 755 0322
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#5CRISFIELD CONSTRUCTION INC

Gardena, CA

Crisfield Construction Inc — licensed ADU contractor in Gardena, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (310) 944 0863
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#6PATRIOT CONTRACTING INC

Gardena, CA

Patriot Contracting Inc — licensed ADU contractor in Gardena, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (310) 436 1740
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#7ARENA PAINTING CONTRACTORS INC

Gardena, CA

Arena Painting Contractors Inc — licensed ADU contractor in Gardena, CA. Detached ADU construction. 34+ years experience.

View Profile📞 (310) 856 0120
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#8TINY T MANAGEMENT INC

Gardena, CA

Tiny T Management Inc — licensed ADU contractor in Gardena, CA. Detached ADU construction.

View Profile📞 (310) 972 9184
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#9RAPID RESPONSE ELECTRIC

Gardena, CA

Rapid Response Electric — licensed ADU contractor in Gardena, CA. Detached ADU construction. 12+ years experience.

View Profile📞 (310) 528 4956
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#10MULLIGAN CONSTRUCTION INC

Gardena, CA

Mulligan Construction Inc — licensed ADU contractor in Gardena, CA. Detached ADU construction. 25+ years experience.

View Profile📞 (310) 926 2211
View All 183 Contractors →

💰 How Much Does an ADU Cost in Gardena?

Garage Conversion

$70,500 - $130,500

Converting existing garage to living space

Detached ADU

$151,000 - $326,000

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 Gardena contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Gardena

How much does it cost to build an ADU in Gardena?▼
The average cost to build an ADU in Gardena ranges from $151,000 to $326,000, or approximately $201 to $376 per square foot. Garage conversions typically cost $70,500 to $130,500.
How long does it take to get an ADU permit in Gardena?▼
The ADU permit process in Gardena 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 Gardena?▼
In Gardena, 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 Gardena?▼
Gardena 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 Gardena?▼
No parking is required for ADUs in Gardena 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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