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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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#1FIRST RESPONSE CONSTRUCTION INC

Tustin, CA

First Response Construction Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (714) 876 4251
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#2CBCI CONSTRUCTION INC

Tustin, CA

Cbci Construction Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 41+ years experience.

View Profile📞 (949) 542 7265
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#3WHERRY CONSTRUCTION

Tustin, CA

Wherry Construction — licensed ADU contractor in Tustin, CA. Detached ADU construction. 40+ years experience.

View Profile📞 (714) 402 6270
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#4PILESTONE CONSTRUCTION INC

Tustin, CA

Pilestone Construction Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 6+ years experience.

View Profile📞 (714) 715 3023
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#5BCL CONSTRUCTION & LANDSCAPE INC

Tustin, CA

Bcl Construction & Landscape Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 5+ years experience.

View Profile📞 (714) 856 5630
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#6KB MAX CONSTRUCTION INC

Tustin, CA

KB Max Construction Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (714) 616 2805
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#7J 4 COMPANY

Tustin, CA

J 4 Company — licensed ADU contractor in Tustin, CA. Detached ADU construction. 10+ years experience.

View Profile📞 (949) 279 2519
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#8KLAER CONSTRUCTION SERVICES INC

Tustin, CA

Klaer Construction Services Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 16+ years experience.

View Profile📞 (714) 493 4100
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#9M Z CONSTRUCTION

Tustin, CA

M Z Construction — licensed ADU contractor in Tustin, CA. Detached ADU construction. 11+ years experience.

View Profile📞 (949) 873 1304
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#10PATINO CONSTRUCTION

Tustin, CA

Patino Construction — licensed ADU contractor in Tustin, CA. Detached ADU construction.

View Profile📞 (949) 991 8509
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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