Portsmouth, VA Radon Levels
Check local Portsmouth radon levels and find certified testing and mitigation professionals to keep your home safe
Portsmouth, VA Radon Facts
EPA Radon Zone
Unknown
Unknown
County
Portsmouth City County, VA
Zip Code
23701
This historic naval city in Portsmouth City sits on Coastal Plain sediments in the Virginia Beach Metro area. While radon testing data remains limited across the city's zip codes, the area's diverse housing stock from different eras warrants homeowner attention to radon potential. Properties range from historic downtown buildings to suburban developments, each with different foundation characteristics affecting radon entry.
Portsmouth, VA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Radon FAQ for Portsmouth, VA
What EPA Radon Zone is Portsmouth in?
Portsmouth and the 23701 zip code are in Portsmouth City County, which has an EPA assigned Radon Zone of Unknown. A zone of Unknown does not have sufficient data for classification.
How much does radon mitigation cost in Portsmouth?
Radon mitigation in Portsmouth 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 Portsmouth?
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 Virginia
Cities in Virginia with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Fredericksburg | 7.29 pCi/L | 7 |
| King George | 7.17 pCi/L | 6 |
| Leesburg | 9.80 pCi/L | 5 |
| Chantilly | 9.60 pCi/L | 5 |
| Fancy Gap | 9.40 pCi/L | 5 |
| Williamsburg | 5.80 pCi/L | 5 |
| Purcellville | 10.75 pCi/L | 4 |
| Aldie | 8.00 pCi/L | 4 |
| Front Royal | 7.75 pCi/L | 4 |
| Bristol | 7.50 pCi/L | 4 |