Gladstone, OR Radon Mitigation and Testing

Q: What EPA Radon Zone is Gladstone in?

Gladstone is in Clackamas County, EPA Zone 3.

Q: How much does radon mitigation cost in Gladstone?

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

Clackamas County

EPA Zone 3

Adjacent to Portland Metro in Clackamas County, Gladstone sits on Columbia River basalt formations that generally produce low radon levels throughout the 97027 zip code. Testing data remains limited for this riverfront community, though the volcanic bedrock and mild climate typically result in minimal radon accumulation. Pacific Northwest homes with crawl spaces should still consider testing, particularly during winter months when indoor air circulation decreases.

Gladstone, OR Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Gladstone, OR Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Gladstone Radon Facts

Key details about the radon risk profile for Gladstone and the 97027 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Clackamas County, OR

Zip Code

97027

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Gladstone and the 97027 zip code are located in Clackamas County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Gladstone, OR

What EPA Radon Zone is Gladstone in?

Gladstone and the 97027 zip code are in Clackamas 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 Gladstone?

Radon mitigation in Gladstone 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 Gladstone?

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 Oregon

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Corvallis	5.60 pCi/L	5
Astoria	9.25 pCi/L	4
La Grande	10.67 pCi/L	3
Bend	3.33 pCi/L	3
Salem	9.00 pCi/L	2
Eugene	7.00 pCi/L	2
Medford	7.00 pCi/L	1
Dundee	6.00 pCi/L	1
Ashland	4.00 pCi/L	1
Portland	4.00 pCi/L	1
Lincoln City	No submissions	0
West Linn	No submissions	0