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ADU Builders & Contractors in Lomita, CA

Building an ADU in Lomita? You'll find 71 licensed contractors in the area, ready to help. Lomita's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Lomita

Avg. Cost/sqft

$206-$381

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 71 ADU Contractors in Lomita

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#1SOBEL GERALD SOLAR

Lomita, CA

Sobel Gerald Solar — licensed ADU contractor in Lomita, CA. Detached ADU construction. 45+ years experience.

View Profile📞 (310) 403 6784
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#2SEAHAWK CONSTRUCTION

Lomita, CA

Seahawk Construction — licensed ADU contractor in Lomita, CA. Detached ADU construction. 26+ years experience.

View Profile📞 (310) 678 7116
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#3SPARK CONSTRUCTION

Lomita, CA

Spark Construction — licensed ADU contractor in Lomita, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (213) 610 3002
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#4BAYTOWN BUILDERS INC

Lomita, CA

Baytown Builders Inc — licensed ADU contractor in Lomita, CA. Detached ADU construction. 19+ years experience.

View Profile📞 (310) 749 9814
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#5HAGINS CONSTRUCTION

Lomita, CA

Hagins Construction — licensed ADU contractor in Lomita, CA. Detached ADU construction. 29+ years experience.

View Profile📞 (310) 415 8944
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#6CELTIC CONSTRUCTION

Lomita, CA

Celtic Construction — licensed ADU contractor in Lomita, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (310) 955 7287
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#7SCHIAPPA ENNIO HOMES INC

Lomita, CA

Schiappa Ennio Homes Inc — licensed ADU contractor in Lomita, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (310) 634 1440
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#8GOLDEN SHORE BUILDERS INC

Lomita, CA

Golden Shore Builders Inc — licensed ADU contractor in Lomita, CA. Detached ADU construction. 22+ years experience.

View Profile📞 (310) 259 7765
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#9MORRIS B CONSTRUCTION

Lomita, CA

Morris B Construction — licensed ADU contractor in Lomita, CA. Detached ADU construction. 19+ years experience.

View Profile📞 (310) 408 5547
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#10ASCENT SERVICES

Lomita, CA

Ascent Services — licensed ADU contractor in Lomita, CA. Detached ADU construction. 40+ years experience.

View Profile📞 (310) 345 4277
View All 71 Contractors →

💰 How Much Does an ADU Cost in Lomita?

Garage Conversion

$73,000 - $133,000

Converting existing garage to living space

Detached ADU

$156,000 - $331,000

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 Lomita contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Lomita

How much does it cost to build an ADU in Lomita?▼
The average cost to build an ADU in Lomita ranges from $156,000 to $331,000, or approximately $206 to $381 per square foot. Garage conversions typically cost $73,000 to $133,000.
How long does it take to get an ADU permit in Lomita?▼
The ADU permit process in Lomita 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 Lomita?▼
In Lomita, 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 Lomita?▼
Lomita 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 Lomita?▼
No parking is required for ADUs in Lomita 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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