Castleton, VT Radon Mitigation and Testing

Q: What is the average radon level in Castleton, VT?

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Castleton in?

Castleton is in Rutland County, EPA Zone 2.

Q: How much does radon mitigation cost in Castleton?

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

Avg: 4.00 pCi/L

Rutland County

EPA Zone 2

1 user test

Nestled in Rutland County, Castleton sits in Vermont's marble valley region where metamorphic bedrock and glacial deposits create moderate radon conditions. Based on limited testing data, the community shows an average reading of 4.0 pCi/L, right at the EPA action threshold. Homes in the 05735 zip code area should prioritize radon testing given the geological potential for elevated levels.

4.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Castleton, VT. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Castleton, VT Radon Mitigation

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

Castleton, VT Radon Testing

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

Castleton, Vermont Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Castleton, VT	51-99 Years	No Basement/All Slab	Nov 2025

Have a radon test result for Castleton? Submit your reading to help other homeowners.

Castleton Radon Facts

Key details about the radon risk profile for Castleton and the 05735 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Rutland County, VT

Zip Code

05735

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

4.00 pCi/L

User Tests Submitted

Castleton and the 05735 zip code are located in Rutland County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Castleton, VT

What is the average radon level in Castleton, VT?

Based on 1 user-submitted test, the average radon level in Castleton 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 Castleton in?

Castleton and the 05735 zip code are in Rutland 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 Castleton?

Radon mitigation in Castleton 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 Castleton?

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 Vermont

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

City	Avg User Radon Level	Submissions
Stowe	13.00 pCi/L	2
Wilmington	8.50 pCi/L	2