Home & Repair, California

Radon Mitigation cost in Ontario, CA

A typical Radon Mitigation figure in Ontario is about $1,510 per system, about 8% above the national figure of $1,400.

Typical cost

Typical in Ontario

$1,510

per system

Fair price range: $864 to $2,700

On the low end
$864
On the high end
$2,700

Estimated from national price data, adjusted for the cost of living in Ontario. Not a quote.

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An estimate for planning, not a quote. A local pro prices your actual job.

How prices have moved

Up 3.1%past year

Up 23.9%over five years

How prices for services other than rent have moved nationally, from the U.S. Bureau of Labor Statistics Consumer Price Index (Services less rent of shelter, CUUR0000SASL2RS), through August 2026. It tracks price change, not the dollar prices on this page.

What moves the price

  1. Home layout
  2. Fan type
  3. Re-test
  4. Crawlspace vs basement
  5. Aesthetics

Ways to pay less

  1. Test before and after
  2. Ask about fan warranties
  3. Compare two mitigators
  4. Include the re-test
  5. Keep the system visible for maintenance

Radon Mitigation in similar cities

PlaceTypicalRange
Ontario, CA$1,510
$864 to $2,700
National typical$1,400
$800 to $2,500
Riverside, CA$1,510
$864 to $2,700
Elk Grove, CA$1,540
$880 to $2,750
Fontana, CA$1,485
$848 to $2,650
Ann Arbor, MI$1,510
$864 to $2,700
Everett, WA$1,510
$864 to $2,700

Other Home & Repair costs in Ontario

Questions people ask

Radon Mitigation in Ontario: what does it cost?

In Ontario, CA, Radon Mitigation typically costs about $1,510 per system, with most prices between $864 and $2,700.

Why is Ontario higher than the national price?

Prices in Ontario run about 8% above the national average. This estimate scales the national figure by that difference in local cost of living.

Is this a quote?

No. It is an estimate built from national price data and local cost of living. A local pro will price your actual job.