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ADU Builders & Contractors in Topanga, CA

Building an ADU in Topanga? You'll find 52 licensed contractors in the area, ready to help. Topanga's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Topanga

Avg. Cost/sqft

$194-$369

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 52 ADU Contractors in Topanga

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#1STEVEN KENT G C

Topanga, CA

Steven Kent G C — licensed ADU contractor in Topanga, CA. Detached ADU construction. 28+ years experience.

View Profile📞 (310) 293 3222
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#2GUYCORP CONSTRUCTION

Topanga, CA

Guycorp Construction — licensed ADU contractor in Topanga, CA. Detached ADU construction.

View Profile📞 (949) 230 0787
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#3NAYLOR KEVIN CONSTRUCTION INC

Topanga, CA

Naylor Kevin Construction Inc — licensed ADU contractor in Topanga, CA. Detached ADU construction. 10+ years experience.

View Profile📞 (310) 600 8778
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#4CONRAD CONSTRUCTION

Topanga, CA

Conrad Construction — licensed ADU contractor in Topanga, CA. Detached ADU construction. 32+ years experience.

View Profile📞 (310) 460 9557
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#5BURKE JOHN FRANCIS

Topanga, CA

Burke John Francis — licensed ADU contractor in Topanga, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (310) 871 4963
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#6EVERETT JAMES J GENERAL CONTRACTOR

Topanga, CA

Everett James J General Contractor — licensed ADU contractor in Topanga, CA. Detached ADU construction. 27+ years experience.

View Profile📞 (310) 989 3189
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#7FRIENDSHIP MARK CONSTRUCTION

Topanga, CA

Friendship Mark Construction — licensed ADU contractor in Topanga, CA. Detached ADU construction. 31+ years experience.

View Profile📞 (310) 455 1528
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#8DO IT WRIGHT PAINTING

Topanga, CA

DO IT Wright Painting — licensed ADU contractor in Topanga, CA. Detached ADU construction. 30+ years experience.

View Profile📞 (310) 455 9576
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#9DEEPHOUSE CONSTRUCTION CO

Topanga, CA

Deephouse Construction CO — licensed ADU contractor in Topanga, CA. Detached ADU construction.

View Profile📞 (310) 853 2767
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#10DOLAN DESIGN & BUILD LLC

Topanga, CA

Dolan Design & Build Llc — licensed ADU contractor in Topanga, CA. Detached ADU construction.

View Profile📞 (310) 606 9916
View All 52 Contractors →

💰 How Much Does an ADU Cost in Topanga?

Garage Conversion

$67,000 - $127,000

Converting existing garage to living space

Detached ADU

$144,000 - $319,000

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 Topanga contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Topanga

How much does it cost to build an ADU in Topanga?▼
The average cost to build an ADU in Topanga ranges from $144,000 to $319,000, or approximately $194 to $369 per square foot. Garage conversions typically cost $67,000 to $127,000.
How long does it take to get an ADU permit in Topanga?▼
The ADU permit process in Topanga 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 Topanga?▼
In Topanga, 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 Topanga?▼
Topanga 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 Topanga?▼
No parking is required for ADUs in Topanga 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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