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Radon Test Kits in Denver County, CO

Denver residents can order a free test kit from the city form while supplies last. CDPHE also offers one free kit per household per year. We did not verify a walk-up Denver counter.

Last verified October 1, 2026. Confirm the official page before you travel. Prices and stock change.

Local Radon Test Kit Options

LimitedMail or online kit

Denver free radon test kit

Denver says residents can order a free home test kit online while supplies last. The department recommends testing every 2 to 3 years.

Who it is for. Denver residents. Supplies are limited.

Free

Free for Denver residents while supplies last.

Order online from the form linked on the Denver radon page.

Order link published by the agency

This is a mail or online request, not a walk-up counter we verified. Colorado residents outside Denver should use the state program, not this Denver form.

Last verified October 1, 2026Radon - City and County of DenverSee something outdated? Report a change.

Available when checkedMail or online kit

Colorado free radon test kit

CDPHE offers a free radon test kit order, one per household per year, and a link to discounted kits.

Who it is for. One free kit per household per year.

Free

Free, one per household per year. CDPHE also links a separate discounted kit order and says store kits often cost about $10 to $50.

Order from the free-kit link on the CDPHE testing page.

Order link published by the agency

CDPHE says radon is found at elevated levels in one out of every two Colorado homes. The department says it does not test your home for you. The discounted kit link on that page goes to https://sosradon.org/test-kits. We did not republish a discounted price because the CDPHE page did not list one.

Last verified October 1, 2026Testing and mitigating your home for radon | CDPHESee something outdated? Report a change.

EPA radon zone

EPA classifies Denver County as Zone 1, its highest radon-potential category. Individual homes can vary, so testing is still the only way to know your home's level. The zone is not a claim that your house is high.

Local radon notes

How to test, and what a result means

Place the kit the way its instructions say, and keep the house closed when the kit requires that. A short test is a screen. It is not the last word if your state wants a follow-up test.

How to test for radon
Understanding radon results
What 4 pCi/L means

Cities that share this program

These are places with a verified program or a verified way to get one. They are not a ranking.

Sources

How we check programs

Test your home. Then help someone else test theirs.

A reusable monitor does not have to stay in one house. After you have a reading you trust for your own home, you can lend it to a parent, an adult child, a coworker, a neighbor, or a friend.

Here is an example, not a sale price. If a roughly $100 monitor is eventually used by five households, the equipment cost works out to about $20 per household. Your real price will be whatever the maker charges that day.

Lending a monitor this way does not meet a professional test or a real estate requirement. When you move the device, follow the manufacturer's instructions and start a new measurement.