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ADU Builders & Contractors in Hermosa Beach, CA

Building an ADU in Hermosa Beach? You'll find 68 licensed contractors in the area, ready to help. Hermosa Beach's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Hermosa Beach

Avg. Cost/sqft

$202-$377

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 68 ADU Contractors in Hermosa Beach

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#1JRC

Hermosa Beach, CA

Jrc — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (310) 793 6775
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#2ANELLO MARK A CONSTURCTION INC

Hermosa Beach, CA

Anello Mark A Consturction Inc — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (310) 374 9934
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#3JOAQUIN MARLOWE CONSTRUCTION

Hermosa Beach, CA

Joaquin Marlowe Construction — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (310) 422 5651
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#4FREDERICKS JEFF ROBERT

Hermosa Beach, CA

Fredericks Jeff Robert — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 38+ years experience.

View Profile📞 (310) 918 7548
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#5KEALY CONSTRUCTION LLC

Hermosa Beach, CA

Kealy Construction Llc — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (310) 753 8594
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#6MANNING KEVIN CONSTRUCTION

Hermosa Beach, CA

Manning Kevin Construction — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (703) 314 4633
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#7STUDIO ARGENTE CONSTRUCTION

Hermosa Beach, CA

Studio Argente Construction — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 23+ years experience.

View Profile📞 (310) 344 6389
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#8BOYD INCORPORATED

Hermosa Beach, CA

Boyd Incorporated — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (310) 606 9300
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#9KNICKMEYER LUCIA EMILY

Hermosa Beach, CA

Knickmeyer Lucia Emily — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (310) 701 1226
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#10MADDEN DESIGN AND BUILD

Hermosa Beach, CA

Madden Design And Build — licensed ADU contractor in Hermosa Beach, CA. Detached ADU construction.

View Profile📞 (310) 612 2994
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💰 How Much Does an ADU Cost in Hermosa Beach?

Garage Conversion

$71,000 - $131,000

Converting existing garage to living space

Detached ADU

$152,000 - $327,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,101 - $5,101

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Hermosa Beach

How much does it cost to build an ADU in Hermosa Beach?▼
The average cost to build an ADU in Hermosa Beach ranges from $152,000 to $327,000, or approximately $202 to $377 per square foot. Garage conversions typically cost $71,000 to $131,000.
How long does it take to get an ADU permit in Hermosa Beach?▼
The ADU permit process in Hermosa Beach 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 Hermosa Beach?▼
In Hermosa Beach, 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 Hermosa Beach?▼
Hermosa Beach 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 Hermosa Beach?▼
No parking is required for ADUs in Hermosa Beach 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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