Menlo Park, CA Radon Levels

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

Based on 2 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Menlo Park in?

Menlo Park is in San Mateo County, EPA Zone 2.

Q: How much does radon mitigation cost in Menlo Park?

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

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

Menlo Park, CA Radon Facts

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

County San Mateo County, CA

Zip Code 94025

Avg. User Level 5.00 pCi/L

User Tests 2

Located in San Mateo County within the San Francisco metro area, Menlo Park has recorded an average radon level of 4.0 pCi/L, which meets the EPA action level threshold. This Silicon Valley community sits in EPA Zone 2, where diverse geological formations create moderate radon potential. Homeowners in zip code 94025 should consider testing, as individual readings can vary significantly based on specific soil conditions and home characteristics.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Menlo Park, CA Radon Mitigation

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Menlo Park, CA Radon Levels

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

Radon Level	City	Home Age	Foundation
6 pCi/L	Menlo Park, CA	51-99 Years	No Basement/All Crawl Space
4 pCi/L	Menlo Park, CA	21-50 Years	No Basement/All Crawl Space

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Radon FAQ for Menlo Park, CA

What is the average radon level in Menlo Park, CA?

Based on 2 user-submitted tests, the average radon level in Menlo Park 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 Menlo Park in?

Menlo Park and the 94025 zip code are in San Mateo 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 Menlo Park?

Radon mitigation in Menlo Park 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 Menlo Park?

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

Menlo Park, CA Radon Levels

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

Menlo Park, CA Radon Facts

Menlo Park, CA Radon Mitigation

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Menlo Park, CA Radon Levels

Radon FAQ for Menlo Park, CA

Most Active Radon Markets in California

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