Portland, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Portland in?

Portland is in San Patricio County, EPA Zone 3.

Q: How much does radon mitigation cost in Portland?

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

San Patricio County

EPA Zone 3

Situated in San Patricio County along the Texas Coastal Plain, this Corpus Christi Metro community is built on clay and sandy soils over sedimentary bedrock. While radon testing data is currently limited for zip code 78374, the area's geology and housing stock warrant homeowner attention. Local homes typically feature slab-on-grade foundations that can still allow radon entry through cracks and utility penetrations.

Portland, TX Radon Mitigation

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

Portland, TX Radon Testing

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

Portland Radon Facts

Key details about the radon risk profile for Portland and the 78374 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

San Patricio County, TX

Zip Code

78374

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Portland and the 78374 zip code are located in San Patricio 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 Portland, TX

What EPA Radon Zone is Portland in?

Portland and the 78374 zip code are in San Patricio 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 Portland?

Radon mitigation in Portland 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 Portland?

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 Texas

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

City	Avg User Radon Level	Submissions
Lubbock	12.67 pCi/L	9
San Antonio	6.57 pCi/L	7
Austin	6.14 pCi/L	7
Dallas	8.00 pCi/L	5
Abilene	4.50 pCi/L	2
Houston	3.50 pCi/L	2
Plano	6.00 pCi/L	1
Frisco	3.00 pCi/L	1
Nacogdoches	No submissions	0