Inverness, CA Radon Levels

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

Based on 2 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Inverness in?

Inverness is in Marin County, EPA Zone 3.

Q: How much does radon mitigation cost in Inverness?

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

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

Inverness, CA Radon Facts

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

County Marin County, CA

Zip Code 94937

Avg. User Level 4.00 pCi/L

User Tests 2

Situated in Marin County along the Pacific coastline, Inverness sits on marine sedimentary formations that typically produce moderate radon levels. Recent testing in zip code 94937 shows an average of 4.0 pCi/L, which falls at the EPA action threshold. Even coastal California homes can experience radon accumulation, so testing remains recommended for this scenic Point Reyes area community.

4.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Inverness, CA Radon Mitigation

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Inverness, CA Radon Levels

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

Radon Level	City	Home Age	Foundation
2 pCi/L	Inverness, CA	0-20 Years	Full Basement
6 pCi/L	Inverness, CA	51-99 Years	Partial Basement

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Radon FAQ for Inverness, CA

What is the average radon level in Inverness, CA?

Based on 2 user-submitted tests, the average radon level in Inverness is 4.00 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 Inverness in?

Inverness and the 94937 zip code are in Marin 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 Inverness?

Radon mitigation in Inverness 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 Inverness?

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

Inverness, CA Radon Levels

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

Inverness, CA Radon Facts

Inverness, CA Radon Mitigation

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Inverness, CA Radon Levels

Radon FAQ for Inverness, CA

Most Active Radon Markets in California

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