What is the maximum ADU size allowed in Tustin?

Detached ADUs in Tustin can be up to 1200 square feet.

ADU Builders & Contractors in Tustin, CA

Q: How much does it cost to build an ADU in Tustin?

The average cost ranges from $144,000 to $319,000, or $194-369 per square foot.

Q: How long does it take to get an ADU permit in Tustin?

The permit process typically takes 60 to 120 weeks in Tustin.

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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#1INFINITE DEVELOPMENT INC

Tustin, CA

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

View Profile 📞 (714) 348 6683

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#2IDEAL HOME REMODELING INC

Tustin, CA

Ideal Home Remodeling Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction.

View Profile 📞 (949) 558 1548

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#3DILWORTH CONSTRUCTION INC

Tustin, CA

Dilworth Construction Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 17+ years experience.

View Profile 📞 (949) 433 5535

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#4BARRY PAUL L CONSTRUCTION

Tustin, CA

Barry Paul L Construction — licensed ADU contractor in Tustin, CA. Detached ADU construction. 18+ years experience.

View Profile 📞 (714) 501 8497

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#5TROUP CONSTRUCTION

Tustin, CA

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

View Profile 📞 (949) 226 4632

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#6IRRIGATION PROS

Tustin, CA

Irrigation Pros — licensed ADU contractor in Tustin, CA. Detached ADU construction.

View Profile 📞 (657) 378 8918

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#7ARNOLD DAVID

Tustin, CA

Arnold David — licensed ADU contractor in Tustin, CA. Detached ADU construction. 26+ years experience.

View Profile 📞 (714) 838 8612

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#8SERVPRO OF LAKE FOREST SOUTH/LAGUNA WOODS

Tustin, CA

Servpro OF Lake Forest South/Laguna Woods — licensed ADU contractor in Tustin, CA. Detached ADU construction.

View Profile 📞 (949) 429 3188

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#9MILCO DEVELOPMENT

Tustin, CA

Milco Development — licensed ADU contractor in Tustin, CA. Detached ADU construction. 36+ years experience.

View Profile 📞 (714) 788 1197

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#10BRAMCO BUILDERS INC

Tustin, CA

Bramco Builders Inc — licensed ADU contractor in Tustin, CA. Detached ADU construction. 22+ years experience.

View Profile 📞 (949) 439 0838

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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