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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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#1RELIABLE HANDY SERVICES

Corona, CA

Reliable Handy Services — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (714) 756 0282
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#2IRON PATH CORP

Corona, CA

Iron Path Corp — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (951) 777 4003
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#3SNS RENOVATIONS LLC

Corona, CA

Sns Renovations Llc — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (909) 319 7768
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#4SERVPRO OF GARDEN GROVE WEST/STANTON

Corona, CA

Servpro OF Garden Grove West/Stanton — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (714) 622 5096
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#5FLORES CONSTRUCTION DESIGN INC

Corona, CA

Flores Construction Design Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (714) 235 6510
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#6BENCHMARK RENOVATIONS

Corona, CA

Benchmark Renovations — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (714) 474 4582
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#7WESTERN TRAFFIC CONTROL INC

Corona, CA

Western Traffic Control Inc — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (951) 277 8261
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#8ALSON GENERAL CONSTRUCTION

Corona, CA

Alson General Construction — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (949) 705 7667
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#9LAURENCE-HOVENIER INC

Corona, CA

Laurence-Hovenier Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 46+ years experience.

View Profile📞 (951) 736 2990
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#10ALVARADO CONSTRUCTION & LOGISTICS

Corona, CA

Alvarado Construction & Logistics — licensed ADU contractor in Corona, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (714) 872 9662
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💰 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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