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Pismo Beach, CA Radon Levels

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


Pismo Beach, CA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County San Luis Obispo County, CA
Zip Code 93449
Avg. User Level 5.00 pCi/L
User Tests 1

Positioned along San Luis Obispo County's coast within the San Luis Obispo Metro, Pismo Beach has measured an average radon level of 5.0 pCi/L, which exceeds the EPA action threshold. The 93449 zip code area sits on marine terrace deposits over sedimentary bedrock formations that can contribute to radon accumulation even in this coastal setting.

5.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Pismo Beach, CA Radon Mitigation

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Pismo Beach, CA Radon Levels

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

Radon LevelCityHome AgeFoundation
5 pCi/L Pismo Beach, CA 21-50 Years No Basement/All Slab

Have a radon test result for Pismo Beach? Submit your reading to help other homeowners.

Radon FAQ for Pismo Beach, CA

What is the average radon level in Pismo Beach, CA?
Based on 1 user-submitted test, the average radon level in Pismo Beach 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 Pismo Beach in?
Pismo Beach and the 93449 zip code are in San Luis Obispo County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Pismo Beach?
Radon mitigation in Pismo Beach 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 Pismo Beach?
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.

CityAvg User Radon LevelSubmissions
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