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ADU Builders & Contractors in Rancho Santa Fe, CA

With 67 verified ADU contractors serving Rancho Santa Fe, CA, homeowners have plenty of options for their accessory dwelling unit project. Local contractors ready to help specialize in everything from design-build to permit navigation.

📊 ADU Quick Facts for Rancho Santa Fe

Avg. Cost/sqft

$192-$367

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 67 ADU Contractors in Rancho Santa Fe

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#1BARNHART DOUGLAS E

Rancho Santa Fe, CA

Barnhart Douglas E — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 43+ years experience.

View Profile📞 (858) 592 6514
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#2FERMANIAN TIMOTHY SCOTT

Rancho Santa Fe, CA

Fermanian Timothy Scott — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 12+ years experience.

View Profile📞 (858) 245 8864
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#3BRAWNER MICHAEL J CONTRACTING

Rancho Santa Fe, CA

Brawner Michael J Contracting — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (760) 717 2980
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#4JENSEN JAMES

Rancho Santa Fe, CA

Jensen James — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (310) 386 2318
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#5STUART CONSTRUCTION SERVICES CO

Rancho Santa Fe, CA

Stuart Construction Services CO — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction.

View Profile📞 (858) 229 6816
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#6BUFFETT WILLIAM

Rancho Santa Fe, CA

Buffett William — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 39+ years experience.

View Profile📞 (858) 336 1907
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#7HAMPEL CONSTRUCTION INC

Rancho Santa Fe, CA

Hampel Construction Inc — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 26+ years experience.

View Profile📞 (858) 832 1307
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#8CLOTFELTER CONSTRUCTION INC

Rancho Santa Fe, CA

Clotfelter Construction Inc — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 33+ years experience.

View Profile📞 (858) 525 1059
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#9NEWPORT PACIFIC INC

Rancho Santa Fe, CA

Newport Pacific Inc — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 47+ years experience.

View Profile📞 (858) 756 3771
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#10MATZINGER CONSTRUCTION INC

Rancho Santa Fe, CA

Matzinger Construction Inc — licensed ADU contractor in Rancho Santa FE, CA. Detached ADU construction. 43+ years experience.

View Profile📞 (858) 756 2465
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💰 How Much Does an ADU Cost in Rancho Santa Fe?

Garage Conversion

$66,000 - $126,000

Converting existing garage to living space

Detached ADU

$142,000 - $317,000

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 Rancho Santa Fe contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in Rancho Santa Fe

How much does it cost to build an ADU in Rancho Santa Fe?▼
The average cost to build an ADU in Rancho Santa Fe ranges from $142,000 to $317,000, or approximately $192 to $367 per square foot. Garage conversions typically cost $66,000 to $126,000.
How long does it take to get an ADU permit in Rancho Santa Fe?▼
The ADU permit process in Rancho Santa Fe 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 Rancho Santa Fe?▼
In Rancho Santa Fe, 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 Rancho Santa Fe?▼
Rancho Santa Fe 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 Rancho Santa Fe?▼
No parking is required for ADUs in Rancho Santa Fe 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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