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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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#1LT CONSTRUCTION & DEVELOPMENT INC

Corona, CA

LT Construction & Development Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 9+ years experience.

View Profile📞 (949) 468 7968
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#2LARCO DEVELOPMENT INC

Corona, CA

Larco Development Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 32+ years experience.

View Profile📞 (951) 201 5126
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#3ECO STATE DEVELOPMENT

Corona, CA

Eco State Development — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (949) 205 5392
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#4TRI COUNTY DEVELOPMENT & CONSTRUCTION INC

Corona, CA

Tri County Development & Construction Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 12+ years experience.

View Profile📞 (951) 987 0017
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#5PRIME CUT CONSTRUCTION

Corona, CA

Prime Cut Construction — licensed ADU contractor in Corona, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (714) 402 2724
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#6H D Z LANDSCAPE CO

Corona, CA

H D Z Landscape CO — licensed ADU contractor in Corona, CA. Detached ADU construction. 7+ years experience.

View Profile📞 (714) 661 4953
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#7A S L CONSTRUCTION INC

Corona, CA

A S L Construction Inc — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (951) 940 0123
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#8CORE CONSTRUCTION

Corona, CA

Core Construction — licensed ADU contractor in Corona, CA. Detached ADU construction. 13+ years experience.

View Profile📞 (951) 277 8261
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#9NATIONAL RENOVATION INC

Corona, CA

National Renovation Inc — licensed ADU contractor in Corona, CA. Detached ADU construction. 15+ years experience.

View Profile📞 (909) 606 0370
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#10ROJAS CONSTRUCTION GENERAL CONTRACTOR INC

Corona, CA

Rojas Construction General Contractor Inc — licensed ADU contractor in Corona, CA. Detached ADU construction.

View Profile📞 (714) 296 9896
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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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