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ADU Builders & Contractors in Irvine, CA

Irvine's master-planned layout and HOA landscape make ADU construction uniquely challenging but rewarding. Costs run $350–$450 per square foot. Units under 750 sq ft avoid impact fees. Top-rated schools and UC Irvine drive rental demand above $2,000/month. California law prohibits HOAs from banning ADUs. An experienced ADU contractor in Irvine navigates the city's design standards to create compliant, property-enhancing units.

📊 ADU Quick Facts for Irvine

Avg. Cost/sqft

$300-$550

Permit Timeline

4-12 weeks

Max Size

1200 sqft

Setbacks

4ft sides

View Irvine Planning Department →

Top 760 ADU Contractors in Irvine

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#1FIRST CHOICE CONSTRUCTION INC

Irvine, CA

First Choice Construction Inc — licensed ADU contractor in Irvine, CA. Detached ADU construction.

View Profile📞 (949) 557 1357
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#2RAINBOW INTERNATIONAL OF ORANGE COUNTY

Irvine, CA

Rainbow International OF Orange County — licensed ADU contractor in Irvine, CA. Detached ADU construction. 8+ years experience.

View Profile📞 (949) 877 7211
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#3REDHAWK BUILDERS INC

Irvine, CA

Redhawk Builders Inc — licensed ADU contractor in Irvine, CA. Detached ADU construction. 31+ years experience.

View Profile📞 (949) 754 9050
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#4AREIO INC

Irvine, CA

Areio Inc — licensed ADU contractor in Irvine, CA. Detached ADU construction. 11+ years experience.

View Profile📞 (310) 293 5333
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#5SILVER LINING INTERIORS GROUP INC

Irvine, CA

Silver Lining Interiors Group Inc — licensed ADU contractor in Irvine, CA. Detached ADU construction. 18+ years experience.

View Profile📞 (949) 535 4241
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#6PACIFIC COAST LAND & CONSTRUCTION INC

Irvine, CA

Pacific Coast Land & Construction Inc — licensed ADU contractor in Irvine, CA. Detached ADU construction. 28+ years experience.

View Profile📞 (949) 852 0700
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#7HOME MAINTENANCE & INSPECTION (HMI) INC

Irvine, CA

Home Maintenance & Inspection (Hmi) Inc — licensed ADU contractor in Irvine, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (949) 373 7936
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#8AISHOLA REMODELING

Irvine, CA

Aishola Remodeling — licensed ADU contractor in Irvine, CA. Detached ADU construction.

View Profile📞 (541) 736 6166
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#9H & D CONSTRUCTION INC

Irvine, CA

H & D Construction Inc — licensed ADU contractor in Irvine, CA. Detached ADU construction.

View Profile📞 (949) 307 1499
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#10CALEB'S GENERAL CONTRACTING INC

Irvine, CA

Caleb'S General Contracting Inc — licensed ADU contractor in Irvine, CA. Detached ADU construction.

View Profile📞 (949) 397 1102
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💰 How Much Does an ADU Cost in Irvine?

Garage Conversion

$80,000 - $200,000

Converting existing garage to living space

Detached ADU

$150,000 - $400,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$5,000 - $15,000

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Irvine

How much does it cost to build an ADU in Irvine?▼
The average cost to build an ADU in Irvine ranges from $150,000 to $400,000, or approximately $300 to $550 per square foot. Garage conversions typically cost $80,000 to $200,000.
How long does it take to get an ADU permit in Irvine?▼
The ADU permit process in Irvine typically takes 4 to 12 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 Irvine?▼
In Irvine, 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 Irvine?▼
Irvine 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 Irvine?▼
No parking is required for ADUs in Irvine 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)Huntington Beach (667)

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