Oak Island, NC Radon Levels

Q: What EPA Radon Zone is Oak Island in?

Oak Island is in Brunswick County, EPA Zone 3.

Q: What EPA radon zones surround Oak Island, NC?

Oak Island sits in Brunswick County, which the EPA classifies as Radon Zone 3. Among the nearby communities listed above, 8 in Zone 3 (low risk, under 2 pCi/L). EPA radon zones are county-level predictions of radon potential, so the EPA recommends testing every individual home regardless of its zone, since levels vary from house to house.

Q: How much does radon mitigation cost in Oak Island?

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

Check local Oak Island radon levels and find certified testing and mitigation professionals to keep your home safe

Oak Island, NC Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Brunswick County, NC

Zip Code 28465

This coastal barrier island community in Brunswick County sits within the Wilmington Metro area, where sandy soils and coastal plain geology typically result in lower radon levels. While testing data remains limited for the 28465 zip code, Oak Island homeowners should still consider radon testing as individual properties can vary from regional trends.

Oak Island, NC Radon Mitigation

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

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EPA Radon Zones Near Oak Island, NC

No user-submitted radon readings are available for Oak Island or its immediate area yet. The table below shows the EPA radon zone — a county-level prediction of radon risk — for nearby communities. Radon still varies from home to home, so testing is the only way to confirm your level.

City	Distance	County	EPA Radon Zone
Kure Beach	13.4 mi	New Hanover County	Zone 3
Carolina Beach	15.5 mi	New Hanover County	Zone 3
Leland	24.6 mi	Brunswick County	Zone 3
Longwood	25.2 mi	Brunswick County	Zone 3
Wilmington	25.4 mi	New Hanover County	Zone 3
Calabash	25.8 mi	Brunswick County	Zone 3
Delco	26.6 mi	Columbus County	Zone 3
Wrightsville Beach	28.5 mi	New Hanover County	Zone 3

Brunswick County Radon Profile

Local geology places Brunswick County in EPA Radon Zone 3, where predicted indoor radon averages fall below 2 pCi/L — though no county is risk-free. Few homeowner tests have been logged inside Brunswick County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Brunswick County to test, as levels can differ between neighboring homes.

Radon FAQ for Oak Island, NC

What EPA Radon Zone is Oak Island in?

Oak Island and the 28465 zip code are in Brunswick 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.

What EPA radon zones surround Oak Island, NC?

Oak Island sits in Brunswick County, which the EPA classifies as Radon Zone 3. Among the nearby communities listed above, 8 in Zone 3 (low risk, under 2 pCi/L). EPA radon zones are county-level predictions of radon potential, so the EPA recommends testing every individual home regardless of its zone, since levels vary from house to house.

How much does radon mitigation cost in Oak Island?

Radon mitigation in Oak Island 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 Oak Island?

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.