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ADU Builders & Contractors in Tustin, CA

Tustin, CA is home to 214 ADU contractors ready to help. From initial permits to final inspection, these local professionals know Tustin's building codes and can guide your project from concept to completion.

📊 ADU Quick Facts for Tustin

Avg. Cost/sqft

$194-$369

Permit Timeline

60-120 weeks

Max Size

1200 sqft

Setbacks

4ft sides

Top 214 ADU Contractors in Tustin

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#1RALPH'S CONSTRUCTION

Tustin, CA

Ralph'S Construction — licensed ADU contractor in Tustin, CA. Detached ADU construction. 37+ years experience.

View Profile📞 (714) 914 2244
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#2WILLIAM JARAMILLO

Tustin, CA

William Jaramillo — licensed ADU contractor in Tustin, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (714) 381 0288
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#3R D SYSTEMS INC

Tustin, CA

R D Systems Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 39+ years experience.

View Profile📞 (949) 936 0100
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#4T V D CONSTRUCTION

Tustin, CA

T V D Construction — licensed ADU contractor in Tustin, CA. Detached ADU construction. 29+ years experience.

View Profile📞 (714) 804 3307
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#5BRADLEY CONSTRUCTION

Tustin, CA

Bradley Construction — licensed ADU contractor in Tustin, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (714) 665 2723
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#6TMC BUILDING SERVICES INC

Tustin, CA

Tmc Building Services Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (949) 464 4432
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#7PAQUETTE DENNIS L

Tustin, CA

Paquette Dennis L — licensed ADU contractor in Tustin, CA. Detached ADU construction. 30+ years experience.

View Profile📞 (714) 832 1403
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#8ARK DEVELOPMENT

Tustin, CA

Ark Development — licensed ADU contractor in Tustin, CA. Detached ADU construction.

View Profile📞 (714) 497 3834
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#9CAL-PAC ENGINEERING & CONSTRUCTION CO

Tustin, CA

Cal-Pac Engineering & Construction CO — licensed ADU contractor in Tustin, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (213) 249 1088
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#10HERRON JACK LEE

Tustin, CA

Herron Jack Lee — licensed ADU contractor in Tustin, CA. Detached ADU construction. 38+ years experience.

View Profile📞 (949) 633 7103
View All 214 Contractors →

💰 How Much Does an ADU Cost in Tustin?

Garage Conversion

$67,000 - $127,000

Converting existing garage to living space

Detached ADU

$144,000 - $319,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$1,117 - $5,117

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Tustin

How much does it cost to build an ADU in Tustin?▼
The average cost to build an ADU in Tustin ranges from $144,000 to $319,000, or approximately $194 to $369 per square foot. Garage conversions typically cost $67,000 to $127,000.
How long does it take to get an ADU permit in Tustin?▼
The ADU permit process in Tustin 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 Tustin?▼
In Tustin, 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 Tustin?▼
Tustin 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 Tustin?▼
No parking is required for ADUs in Tustin 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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