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1Best Radon Testing & Mitigation in Toronto
Last updated: By RadonIndex Research Team
7 radon companies publish an address in Toronto, averaging 4.6★ on Google among those carrying a rating. The larger category here is Radon Testing, with 5 listed. Each was kept because its own website names a radon service, and each profile shows the wording we found. Ranking is by the RadonIndex Score, which weighs what a company states on its own website, its Google reviews and how complete its record is. It is not a measure of technical competence.
How do the two radon services compare in Toronto?
How many companies RadonIndex lists in Toronto for each service, their average Google rating, and the published Canada-wide price range for that work. No price here is specific to Toronto, because no source publishes one.
| Category | Listed pros | Avg rating, pros with 3+ reviews | Typical price range |
|---|---|---|---|
| Radon Testing | 5 | 4.65★ | $30–$60 per kit |
| Radon Mitigation | 2 | 4.45★ | $2,000–$3,000 installed |
Who are the best radon testing companies in Toronto?
All radon testing companiesRadonIndex lists 5 radon testing companies serving Toronto, averaging 4.65★ on Google across the 2 with three or more reviews. The current top-ranked pick is Restoration Mate at 4.9★ from 161 reviews. Ordered by the RadonIndex Score, never paid placement.
- I2
- S3
- T4
Trillium Home Inspections
No reviews yet42/100 RadonIndex Score
- Says it is C-NRPP certified
- Says it carries WSIB coverage
Radon Testing
Who are the best radon mitigation contractors in Toronto?
All radon mitigation companiesRadonIndex lists 2 radon mitigation contractors serving Toronto, averaging 4.45★ on Google across the 2 with three or more reviews. The current top-ranked pick is Radon Gas Expert at 4.6★ from 54 reviews. Ordered by the RadonIndex Score, never paid placement.
- R1
- T2
Which nearby areas can I also compare?
Toronto sits near several other Greater Toronto and Hamilton Area areas covered on RadonIndex. If your project is close to a boundary, it is worth comparing pros in these neighbouring areas too.
Radon in Toronto: frequently asked questions
How many radon companies are listed in Toronto?
- 7, as of the August 2026 dataset, averaging 4.6★ on Google among those carrying a rating. The larger category here is Radon Testing, with 5. That is everyone we can evidence with a published address in Toronto, not everyone who will travel to it: companies with no published address serve a wide area and are listed under the service categories instead.
Which radon service is rated highest in Toronto?
- Radon Testing companies in Toronto hold a median 4.7★ across the 2 with three or more reviews, the highest of any category RadonIndex tracks in this area. That is a Google rating, not the RadonIndex Score: the Score also weighs what a company states on its own website and how complete its record is.
How much does radon testing cost in Toronto?
- No published price is specific to Toronto, so we do not print one. The Canada-wide figure from Homeowner.ca is $30 to $60 per kit for long-term alpha track test kit, mail-in lab analysis. Add 13% HST. See the radon testing cost guide for what moves a quote inside that range.