Spokane County · information website
Radon testing in Spokane
Published prices for Spokane County, with the source and the date we checked.
Short-term test during a home purchase, Spokane: $150 to $250 (RadonResources, Spokane, WA, checked Nov 2, 2026)
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- Prices with sources · checked Nov 2, 2026
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Published prices around Spokane
| What it covers | Range | Source and date |
|---|---|---|
| Professional test, Spokane (reported May 2021) | $146.29 to $167.15, average $156.72 | ProMatcher, Spokane radon costs, checked Nov 2, 2026 |
| Short-term test during a home purchase, Spokane | $150 to $250 | RadonResources, Spokane, WA, checked Nov 2, 2026 |
| Mitigation system, Spokane (reported December 2020) | $893.46 to $1,362.49, average $1,127.98 | ProMatcher, Spokane radon costs, checked Nov 2, 2026 |
Company prices are as published on each company's own page on the date shown. We have no business relationship with any company named here, and none of them pays us.
When a radon result needs action
- A short-term test shows 4 pCi/L or more: EPA recommends a follow-up test before you decide. (EPA ↗)
- A long-term test, or the average of two short-term tests, shows 4 pCi/L or more: EPA recommends fixing the home. (EPA ↗)
- Between 2 and 4 pCi/L: EPA says to consider fixing the home. (EPA ↗)
This line does not send anyone and does not return calls. If someone is in danger, call 911.
Check before you hire
- Ask for the contractor registration number and look it up: Washington L&I ↗
- Ask whether the radon professional is certified by NRPP or NRSB: Washington State Department of Health ↗
- Get the price in writing before work starts
- Ask what the warranty covers, in writing
These are official state lookups. This site is not affiliated with them and does not check or recommend any company.
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Quick answers
Where do the prices on this site come from?
Each range on the cost page links to the page it came from, with the date it was checked. Where no source could be found, the number was removed.
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