Allenspark, CO Radon Levels

Q: What EPA Radon Zone is Allenspark in?

Allenspark is in Boulder County, EPA Zone 1.

Q: How much does radon mitigation cost in Allenspark?

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

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

Allenspark, CO Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Boulder County, CO

Zip Code 80510

Nestled in Boulder County at high elevation near Rocky Mountain National Park, Allenspark's granite and metamorphic bedrock can produce elevated radon levels. Testing data for this mountain community in zip code 80510 remains limited, making professional assessment crucial for residents. The area's steep terrain and fractured bedrock create conditions where radon accumulation can vary dramatically between neighboring properties.

10.17

pCi/L area average

Above EPA Action Level

Boulder County average: 10.17 pCi/L, based on 6 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Allenspark itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Allenspark, CO Radon Mitigation

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

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Radon Readings Near Allenspark, CO

No homeowner tests have been submitted for Allenspark yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Lyons	10.4 mi	14.50 pCi/L	2
Grand Lake	18.0 mi	6.00 pCi/L	2
Estes Park	18.7 mi	6.50 pCi/L	2
Boulder	20.3 mi	12.00 pCi/L	1
Berthoud	22.4 mi	12.00 pCi/L	2
Longmont	24.2 mi	8.00 pCi/L	4
Loveland	25.8 mi	4.50 pCi/L	2
Erie	26.5 mi	20.00 pCi/L	1

Boulder County Radon Profile

Boulder County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 4 cities in Boulder County average 10.17 pCi/L across 6 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Boulder County to test, as levels can differ between neighboring homes.

Radon FAQ for Allenspark, CO

What EPA Radon Zone is Allenspark in?

Allenspark and the 80510 zip code are in Boulder County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Allenspark?

No homeowner radon tests have been submitted for Allenspark yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Boulder County average—are the best available indicator of local conditions until Allenspark homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Allenspark?

Radon mitigation in Allenspark 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 Allenspark?

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.