Mississauga radon testing and mitigation
717,961 residents. 1 in 20 homes test above the Health Canada radon guideline.
Why Mississauga homeowners test
Canada's 7th largest city with housing stock ranging from 1960s Port Credit bungalows to brand-new Cooksville condos. Peel Region has ZERO C-NRPP certified mitigators listed.
Read our full guide: Radon Testing in Mississauga: What It Costs, When to Test, and How to Read the Result.
Our Mississauga service
- Testing: $99 (standard) or $399 (real estate)
- Mitigation: $2,800 to $3,800 preliminary estimate 3
- Typical scheduling: within 3-5 business days
- Same-week availability most months
Mississauga-specific questions
Which Mississauga neighbourhoods are most at risk for radon?
Older 1950s to 1970s areas like Port Credit, Lakeview, Mineola, Lorne Park, and Clarkson tend to have higher-risk homes because of stone or block foundations and basements that predate modern vapour barriers. Square One area condos and high-rise units above the 3rd floor are typically very low-risk because radon enters at ground level.
Do you service all of Mississauga?
Yes. Every former municipality including Port Credit, Streetsville, Cooksville, Clarkson, Erin Mills, Meadowvale, Malton, Lakeview, Lorne Park, Mineola, Churchill Meadows, and Heartland. Same $99 pricing across the city, no distance surcharge.
My new build is in Erin Mills, Heartland, or another post-2021 development. Does Tarion cover radon?
If your home was purchased from a builder on or after February 1, 2021 and is within its 7-year Tarion warranty, your builder is required to fund radon mitigation up to $50,000 if a C-NRPP certified test comes back at or above 200 Bq/m³. The test itself ($99 with us) is the gateway. Most Mississauga new-build owners have no idea this coverage exists.
About these numbers
Population and home counts come from Statistics Canada's 2021 Census of Population 1 . These are exact figures.
The per-city radon percentage is a synthesis estimate, not a number pulled directly from any single source. We blend three datasets: Health Canada's Cross-Canada Survey of Radon Concentrations in Homes (the 2012 federal baseline) 4 , the University of Calgary's Evict Radon citizen-science mapping project 2 , and Take Action on Radon's aggregated municipal data 5 .
The federal baseline often reports lower above-guideline rates than the newer citizen-science projects. Two reasons: the federal study is now 14+ years old, and the newer citizen-science projects sample more aggressively in homes built under tighter modern building codes (which trap soil gas more effectively than older draftier construction). Where these sources disagree on a specific municipality, our published percentage lands on a working midpoint. So if you click through to the federal survey expecting to find "Mississauga 5%" verbatim, you won't. The federal survey may report a lower figure for the same area, and the citizen-science maps often report a higher one. We chose the midpoint because no single source is definitive.
None of this gives you a definitive percentage for your specific home. Two homes on the same street can test 30 Bq/m³ apart. The only reliable answer for your home is a test on that home.
References
- 1.Statistics Canada. Census Profile, 2021 Census of Population↗ (2022)↩
- 2.Evict Radon. Evict Radon National Study↗↩
- 3.Health Canada. Government of Canada Radon Guideline↗↩
- 4.Health Canada. Cross-Canada Survey of Radon Concentrations in Homes: Final Report↗ (2012)↩
- 5.Canadian Association of Radon Scientists and Technologists (CARST). Take Action on Radon↗↩
See our full research bibliography at /sources.