Home health · 70 cities · checked September 28, 2026
Radon testing and long-term monitoring across Canada
A long-term test (at least 91 days, in the heating season) measures radon against Canada's 200 Bq/m³ guideline; monitors keep watching after mitigation.
Typical cost: $30–$80 for a DIY long-term kit
Choose your city
Each city page covers local prices and rules, the climate and housing stock that shape the job, and who does the work there. The bar under each city shows its houses by construction era, oldest first.
British Columbia
- Vancouver 0.9% at or above guideline (2024)
- Surrey 0.9% at or above guideline (2024)
- Burnaby 0.9% at or above guideline (2024)
- Richmond 0.9% at or above guideline (2024)
- Abbotsford 3.4% at or above guideline (2024)
- Coquitlam 0.9% at or above guideline (2024)
- Kelowna 28.5% at or above guideline (2024)
- Langley 0.9% at or above guideline (2024)
- Saanich 0.5% at or above guideline (2024)
- Delta 0.9% at or above guideline (2024)
- Nanaimo 1.3% at or above guideline (2024)
- Kamloops 9.5% at or above guideline (2024)
- Victoria 0.5% at or above guideline (2024)
Ontario
- Toronto 4.5% at or above guideline (2024)
- Ottawa 17.0% at or above guideline (2024)
- Mississauga 4.5% at or above guideline (2024)
- Brampton 4.5% at or above guideline (2024)
- Hamilton 12.0% at or above guideline (2024)
- London 3.5% at or above guideline (2024)
- Markham 4.5% at or above guideline (2024)
- Vaughan 4.5% at or above guideline (2024)
- Kitchener 10.2% at or above guideline (2024)
- Windsor 14.5% at or above guideline (2024)
- Oakville 4.5% at or above guideline (2024)
- Richmond Hill 4.5% at or above guideline (2024)
- Burlington 12.0% at or above guideline (2024)
- Oshawa 12.4% at or above guideline (2024)
- Greater Sudbury 12.4% at or above guideline (2024)
- Barrie 12.4% at or above guideline (2024)
- Guelph 13.5% at or above guideline (2024)
- Whitby 12.4% at or above guideline (2024)
- Cambridge 10.2% at or above guideline (2024)
- St. Catharines 12.4% at or above guideline (2024)
- Milton 4.5% at or above guideline (2024)
- Kingston 23.7% at or above guideline (2024)
- Ajax 4.5% at or above guideline (2024)
- Waterloo 10.2% at or above guideline (2024)
- Thunder Bay 34.3% at or above guideline (2024)
- Brantford 12.4% at or above guideline (2024)
- Chatham-Kent 20.5% at or above guideline (2024)
- Clarington 12.4% at or above guideline (2024)
- Pickering 4.5% at or above guideline (2024)
- Peterborough 12.4% at or above guideline (2024)
Quebec
- Montréal 17.4% at or above guideline (2024)
- Québec City 18.1% at or above guideline (2024)
- Laval 17.4% at or above guideline (2024)
- Gatineau 17.0% at or above guideline (2024)
- Longueuil 17.4% at or above guideline (2024)
- Sherbrooke 24.9% at or above guideline (2024)
- Lévis 18.1% at or above guideline (2024)
- Saguenay 16.7% at or above guideline (2024)
- Trois-Rivières 16.7% at or above guideline (2024)
- Terrebonne 17.4% at or above guideline (2024)
- Saint-Jean-sur-Richelieu 17.4% at or above guideline (2024)
before 1961 1961–1990 1991–2000 2001 or later · Statistics Canada, 2021 Census
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