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ADU Builders & Contractors in San Juan Capstrno, CA

Building an ADU in San Juan Capstrno? You'll find 7 licensed contractors in the area, ready to help. San Juan Capstrno's ADU market continues to grow as homeowners invest in additional living space, rental income, and multi-generational housing.

📊 ADU Quick Facts for San Juan Capstrno

Avg. Cost/sqft

$193-$368

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 7 ADU Contractors in San Juan Capstrno

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#1SALINI CONSTRUCTION

San Juan Capstrno, CA

Salini Construction — licensed ADU contractor in San Juan Capstrno, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (949) 233 3237
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#2SEACOAST DEVELOPMENT CORPORATION

San Juan Capstrno, CA

Seacoast Development Corporation — licensed ADU contractor in San Juan Capstrno, CA. Detached ADU construction. 39+ years experience.

View Profile📞 (949) 495 1499
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#3PALMER CONSTRUCTION

San Juan Capstrno, CA

Palmer Construction — licensed ADU contractor in San Juan Capstrno, CA. Detached ADU construction. 36+ years experience.

View Profile📞 (949) 257 9632
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#4FRIESS KEN

San Juan Capstrno, CA

Friess Ken — licensed ADU contractor in San Juan Capstrno, CA. Detached ADU construction. 43+ years experience.

View Profile📞 (949) 533 0811
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#5SOUTHERN COUNTIES CONSTRUCTION

San Juan Capstrno, CA

Southern Counties Construction — licensed ADU contractor in San Juan Capstrno, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (949) 637 5875
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#6MUIR GERALD NOLAN

San Juan Capstrno, CA

Muir Gerald Nolan — licensed ADU contractor in San Juan Capstrno, CA. Detached ADU construction. 34+ years experience.

View Profile📞 (949) 283 0447
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#7BROWN TONY GENERAL CONTRACTOR

San Juan Capstrno, CA

Brown Tony General Contractor — licensed ADU contractor in San Juan Capstrno, CA. Detached ADU construction. 40+ years experience.

View Profile📞 (949) 661 2054

💰 How Much Does an ADU Cost in San Juan Capstrno?

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 San Juan Capstrno contractors to compare pricing.

❓ Frequently Asked Questions About ADUs in San Juan Capstrno

How much does it cost to build an ADU in San Juan Capstrno?▼
The average cost to build an ADU in San Juan Capstrno 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 San Juan Capstrno?▼
The ADU permit process in San Juan Capstrno 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 San Juan Capstrno?▼
In San Juan Capstrno, 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 San Juan Capstrno?▼
San Juan Capstrno 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 San Juan Capstrno?▼
No parking is required for ADUs in San Juan Capstrno 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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