Irvine, CA Radon Levels

Q: What is the average radon level in Irvine, CA?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Irvine in?

Irvine is in Orange County, EPA Zone 3.

Q: How much does radon mitigation cost in Irvine?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Irvine radon levels and find certified testing and mitigation professionals to keep your home safe

Irvine, CA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Orange County, CA

Zip Code 92602

Avg. User Level 5.00 pCi/L

User Tests 1

This planned community in Orange County within the Los Angeles Metro area shows an average radon level of 5.0 pCi/L, which exceeds the EPA action threshold of 4.0 pCi/L. Built primarily from the 1970s onward with modern construction techniques, Irvine's housing stock consists largely of homes with slab-on-grade foundations typical of Southern California. Despite newer construction standards across zip codes 92602-92620, testing confirms that radon mitigation may be necessary for many homes in this area.

5.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Irvine, CA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Irvine, CA Radon Mitigation

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Irvine, CA Radon Levels

User-submitted radon test readings from homes in the Irvine area.

Radon Level	City	Home Age	Foundation
5 pCi/L	Irvine, CA	21-50 Years	No Basement/All Slab

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Radon FAQ for Irvine, CA

What is the average radon level in Irvine, CA?

Based on 1 user-submitted test, the average radon level in Irvine is 5.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Irvine in?

Irvine and the 92602 zip code are in Orange County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Irvine?

Radon mitigation in Irvine typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Irvine?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in California

Cities in California with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Los Angeles	7.83 pCi/L	6
Mammoth Lakes	10.80 pCi/L	5
San Jose	4.20 pCi/L	5
Rancho Palos Verdes	8.00 pCi/L	4
Bishop	6.25 pCi/L	4
Oakland	5.00 pCi/L	4
Woodland Hills	7.67 pCi/L	3
South Lake Tahoe	6.33 pCi/L	3
Palos Verdes Peninsula	6.00 pCi/L	3
Sacramento	4.33 pCi/L	3

Irvine, CA Radon Levels

Check local Irvine radon levels and find certified testing and mitigation professionals to keep your home safe

Irvine, CA Radon Facts

Irvine, CA Radon Mitigation

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Irvine, CA Radon Levels

Radon FAQ for Irvine, CA

Most Active Radon Markets in California

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