Scarborough radon testing and mitigation
~632,000 residents. ~1 in 23 homes test above the Health Canada radon guideline.
Why Scarborough homeowners test
Scarborough has ZERO C-NRPP certified radon professionals listed (as of April 2026), despite being Canada's 4th largest population centre. We service Scarborough directly from our home base.
Our Scarborough 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
Scarborough-specific questions
Do you service all of Scarborough?
Yes. Every Scarborough neighbourhood including the Bluffs (Cliffside, Birchcliff, Cliffcrest, Guildwood), Agincourt, Cedarbrae, West Hill, Malvern, Rouge, Highland Creek, Wexford, and Bendale. Same $99 pricing, no distance surcharge. Scarborough is our home base.
Why are there zero C-NRPP certified pros listed for Scarborough?
Two factors. First, the C-NRPP public directory is opt-in: certified professionals choose which regions to list. Second, Scarborough's median income is below the GTA average, which historically makes it less attractive for premium-priced radon companies. We are reversing this. Our $99 pricing makes professional testing accessible to every Scarborough household, and Scarborough is our home base, not a remote service area.
Are Bluffs homes (Cliffside, Birchcliff, Guildwood) higher risk for radon?
Some are, for an unusual reason. Many Bluffs-edge homes have erosion-related foundation issues including settled slabs and lateral cracking. These conditions can favour soil gas entry. We have tested several Bluffs homes with results between 150 and 250 Bq/m³. Mid-Scarborough and northern neighbourhoods test closer to the GTA average.
Most of Scarborough's housing is from the 1960s to 1980s. Does that mean higher radon?
On average, marginally. Mid-century Scarborough homes (Wexford, Bendale, Cedarbrae, Agincourt original core) often have block foundations and finished basement family rooms, which combined favour radon accumulation. But Scarborough's overall city average (43 Bq/m³) is still below the Health Canada guideline. Individual homes vary widely. The only reliable answer is a test on the specific home.
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 "Scarborough 4.5%" 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.