North Hills, CA Radon Levels

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

Based on 2 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is North Hills in?

North Hills is in Los Angeles County, EPA Zone 2.

Q: How much does radon mitigation cost in North Hills?

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

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

North Hills, CA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Los Angeles County, CA

Zip Code 91343

Avg. User Level 6.00 pCi/L

User Tests 2

Located in Los Angeles County within the San Fernando Valley, North Hills shows an average radon level of 6.0 pCi/L based on recent testing data. This level exceeds the EPA's 4.0 pCi/L action threshold, indicating that zip code 91343 residents should consider radon mitigation. Even in Southern California's typically moderate radon environment, local geological variations can create elevated readings that require professional attention.

6.00

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in North Hills, CA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

North Hills, CA Radon Mitigation

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North Hills, CA Radon Levels

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

Radon Level	City	Home Age	Foundation
7 pCi/L	North Hills, CA	51-99 Years	No Basement/All Slab
5 pCi/L	North Hills, CA	51-99 Years	No Basement/All Slab

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Radon FAQ for North Hills, CA

What is the average radon level in North Hills, CA?

Based on 2 user-submitted tests, the average radon level in North Hills is 6.00 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 North Hills in?

North Hills and the 91343 zip code are in Los Angeles 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 North Hills?

Radon mitigation in North Hills 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 North Hills?

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

North Hills, CA Radon Levels

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

North Hills, CA Radon Facts

North Hills, CA Radon Mitigation

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North Hills, CA Radon Levels

Radon FAQ for North Hills, CA

Most Active Radon Markets in California

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