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ADU Builders & Contractors in Corona, CA

Corona combines Riverside County's affordable ADU costs — $200–$325 per square foot — with growing Inland Empire job market demand. The city participates in the free Permit Ready ADU program with pre-approved plans. Suburban lots here tend to be larger than coastal cities, allowing more ADU placement flexibility. An ADU contractor in Corona helps you capitalize on the area's housing shortage and commuter rental demand.

📊 ADU Quick Facts for Corona

Avg. Cost/sqft

$225-$425

Permit Timeline

4-10 weeks

Max Size

1200 sqft

Setbacks

4ft sides

View Corona Planning Department →

Top 541 ADU Contractors in Corona

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#1G O P CONSTRUCTION

Corona, CA

G O P Construction — licensed ADU contractor in Corona, CA. Detached ADU construction. 20+ years experience.

View Profile📞 (714) 393 2494
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#2LISARDO CONSTRUCTION INC

Corona, CA

Lisardo Construction Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 21+ years experience.

View Profile📞 (951) 735 9958
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#3POOL GUY SERVICES INC

Corona, CA

Pool Guy Services Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 28+ years experience.

View Profile📞 (951) 817 9437
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#4VICTORY HOME RENOVATION INC

Corona, CA

Victory Home Renovation Inc — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (800) 803 8482
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#5A C W BUILDERS

Corona, CA

A C W Builders — licensed ADU contractor in Corona, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (951) 272 0577
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#6F A B SKYLIGHTS

Corona, CA

F A B Skylights — licensed ADU contractor in Corona, CA. Detached ADU construction. 17+ years experience.

View Profile📞 (951) 356 4126
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#7WONG KING SAN

Corona, CA

Wong King San — licensed ADU contractor in Corona, CA. Detached ADU construction. 25+ years experience.

View Profile📞 (626) 780 8366
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#8BAGHOUSE AND INDUSTRIAL SHEET METAL SERVICES

Corona, CA

Baghouse And Industrial Sheet Metal Services — licensed ADU contractor in Corona, CA. Detached ADU construction. 33+ years experience.

View Profile📞 (951) 272 6610
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#9CALVILLO CONSTRUCTION CORP

Corona, CA

Calvillo Construction Corp — licensed ADU contractor in Corona, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (909) 983 1755
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#10CORE TREE CARE INC

Corona, CA

Core Tree Care Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (951) 471 8333
View All 541 Contractors →

💰 How Much Does an ADU Cost in Corona?

Garage Conversion

$55,000 - $150,000

Converting existing garage to living space

Detached ADU

$110,000 - $300,000

New standalone unit (600-1,200 sqft)

Permit & Fees

$3,000 - $10,000

Plan check, permits, utility connections

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

❓ Frequently Asked Questions About ADUs in Corona

How much does it cost to build an ADU in Corona?▼
The average cost to build an ADU in Corona ranges from $110,000 to $300,000, or approximately $225 to $425 per square foot. Garage conversions typically cost $55,000 to $150,000.
How long does it take to get an ADU permit in Corona?▼
The ADU permit process in Corona typically takes 4 to 10 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 Corona?▼
In Corona, 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 Corona?▼
Corona 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 Corona?▼
No parking is required for ADUs in Corona 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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