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ADU Builders & Contractors in Santa Monica, CA

Building an ADU in Santa Monica? You'll find 274 licensed contractors in the area, ready to help. Santa Monica's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for Santa Monica

Avg. Cost/sqft

$193-$368

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 274 ADU Contractors in Santa Monica

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#1UNIFIED REAL ESTATE SERVICES INC

Santa Monica, CA

Unified Real Estate Services Inc — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (310) 470 4846
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#2SHOUCAIR DAVID

Santa Monica, CA

Shoucair David — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (310) 729 2414
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#3CARNEVALE & SON CONSTRUCTION INC

Santa Monica, CA

Carnevale & Son Construction Inc — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 45+ years experience.

View Profile📞 (310) 828 5407
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#4EARLE JAMES C

Santa Monica, CA

Earle James C — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 43+ years experience.

View Profile📞 (310) 678 6666
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#5HUGHES JASON

Santa Monica, CA

Hughes Jason — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 26+ years experience.

View Profile📞 (310) 829 6463
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#6AMERICATEAM CONTRACTOR CO

Santa Monica, CA

Americateam Contractor CO — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 14+ years experience.

View Profile📞 (323) 289 7690
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#7RICARD RONALD J

Santa Monica, CA

Ricard Ronald J — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (310) 489 7372
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#8IN CONSTRUCTION

Santa Monica, CA

IN Construction — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 39+ years experience.

View Profile📞 (310) 850 1481
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#9MCNALLY US INC

Santa Monica, CA

Mcnally US Inc — licensed ADU contractor in Santa Monica, CA. Detached ADU construction.

View Profile📞 (323) 616 2207
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#10BLAIR CONSTRUCTION INC

Santa Monica, CA

Blair Construction Inc — licensed ADU contractor in Santa Monica, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (310) 396 3907
View All 274 Contractors →

💰 How Much Does an ADU Cost in Santa Monica?

Garage Conversion

$66,500 - $126,500

Converting existing garage to living space

Detached ADU

$143,000 - $318,000

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 Santa Monica contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Santa Monica

How much does it cost to build an ADU in Santa Monica?▼
The average cost to build an ADU in Santa Monica ranges from $143,000 to $318,000, or approximately $193 to $368 per square foot. Garage conversions typically cost $66,500 to $126,500.
How long does it take to get an ADU permit in Santa Monica?▼
The ADU permit process in Santa Monica 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 Santa Monica?▼
In Santa Monica, 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 Santa Monica?▼
Santa Monica 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 Santa Monica?▼
No parking is required for ADUs in Santa Monica 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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