Certified providers
1
Businesses with a business address in Fonthill and at least one active C-NRPP credential, as of 2026-11-03. Providers based elsewhere may also serve Fonthill.
- Date
- 2026-11-03
- Sample
- Not applicable
Town
Radon testing in Fonthill
C-NRPP certified radon testing and mitigation businesses with an office in Fonthill, Ontario, and the 2024 survey figure for its census division, dated.
Photo: Ian Furst, CC BY-SA 3.0, cropped, via Wikimedia Commons.
Certified providers with a business address in Fonthill
1 certified provider
Sorted alphabetically by business name. Every C-NRPP certified business is listed free, and payment never affects the order.
C-NRPP
- Radon measurement
Last registry check
Radon rules in Fonthill
Laws, codes and decisions on radon that apply in Fonthill
Each row names its instrument and status as the authority states it. Guidance is not law; a tribunal decision is not court precedent. Canada's 200 Bq/m³ guideline binds no homeowner.
| Rule type | Applies to | What it says | Instrument | Status | In effect from |
|---|---|---|---|---|---|
| Building code | Ontario | Ontario's current code came into force 1 January 2025 and revoked the 2012 code. New houses require a rough-in for a subfloor depressurization system, and all permit applications from 1 April 2025 must use the 2024 code; the building officials' association says a sub-slab depressurization rough-in is required for all Part 9 residential uses, along with a separate membrane air barrier. The 2012 code applied radon provisions only where radon was "known to be a problem"; that rule is historical, though it still governs some transition projects. | O. Reg. 163/24: Building Code (adopting the National Building Code 2020 with Ontario amendments) | In force | 2025-01-01 |
| Real estate disclosure | Ontario | Sellers must disclose known latent defects that make a home unsafe, and TRESA Phase 2 put separate disclosure duties on agents. The Seller Property Information Statement is voluntary, and its environmental question names radon gas as an example. | Trust in Real Estate Services Act, Phase 2 (in force 1 December 2023); OREA Seller Property Information Statement (voluntary) | In force | 2023-12-01 |
| Rental housing | Ontario | The tribunal held that radon above Health Canada's guideline breached the landlord's duty to keep the unit in good repair. A tenancy tribunal decision, not court precedent. | Landlord and Tenant Board, CET-67599-17 (Re), 2017 CanLII 60362 | Tribunal or court decision | no data |
| New home warranty | Ontario | Radon in a new home shall not exceed 200 Bq/m³. Repairs are required where a long-term test of 91 days or more, conducted in the lowest level, exceeds 200 Bq/m³ and the exceedance results from a Building Code violation or a defect in the builder's work or materials. Coverage runs one year for workmanship and materials, two years for Code health and safety violations and seven years for major structural defect, and stays with the home for seven years from original possession. Up to $50,000 where the purchase agreement was signed after 1 February 2021, otherwise $15,000. An approved do-it-yourself kit or a certified professional may run the test. | Tarion Construction Performance Guidelines, 5th Edition, article FH 1.19 Radon Exceeds Acceptable Levels (added 24 May 2024; process in effect since 2013) | In force | 2024-05-24 |
| Workplace | Ontario | Ontario applies the Canadian NORM Guidelines to all workplaces through its general duty clause and tells employers to reduce radon below 200 Bq/m³ through engineering controls where possible. Ontario's mines regulation (RRO 1990, Reg. 854) addresses radon at sections 288 to 293; those duties are not transcribed here until the regulation text is read. | Ontario guidance, Radon in the workplace (applying the Canadian NORM Guidelines under the general duty clause) | Guidance | no data |
Rules that apply across Canada are on the Ontario page.
The radon rules dataset; each row cites its primary source and the date checked.
Help paying for radon testing or mitigation in Ontario
Grant
Lungs Matter radon mitigation grant
Up to $1,500 toward home radon mitigation. Radon is named as eligible. Current. As of 2026-09-01.
Forgivable loan
Ontario Renovates
Varies by service manager, roughly $15,000 to $25,000. Radon is not named. Varies by service manager. As of 2026-09-18.
Warranty coverage
Tarion new home warranty, radon coverage (FH 1.19)
Up to $50,000 where the Agreement of Purchase and Sale was signed after 1 February 2021, otherwise $15,000. Radon is named as eligible. Current for qualifying homes. As of 2026-09-18.
Free or subsidized testing
100 Radon Test Kit Challenge
Running for 2025 and 2026 with a live community list by province. Most participating communities distribute free kits; some charge a low fee. Current. As of 2026-09-18.
Free or subsidized testing
White Ribbon radon testing program, Take Action on Radon
Free long-term (91 days or more) alpha track test kit, mailed back for analysis. Current. As of 2026-10-27.
More places
Province or territory
All of Ontario
Radon by census division, and every certified provider in Ontario.
Provenance
- Source
- 2024 Cross-Canada Radon Survey, Version 1.1 (CCSR.24.1.1); C-NRPP Find a Professional directory, pulled 2026-11-03.
- Method
- Survey figures are reproduced as printed, by reporting unit. Provider counts are businesses whose registry address is in this place with at least one unexpired credential; nothing is typed by hand.
- Date checked
- 2026-11-03
- Next review
- 2026-12-03
Sources
- Cross-Canada Survey of Radon Exposure in the Residential Buildings of Urban and Rural Communities, 2024 Report, Version 1.1 (CCSR.24.1.1), released October 2024, ISSN 2818-8195. Cross-Canada Survey of Radon working group.
- C-NRPP, Find a Professional directory: every province and territory searched for each of the six service types, de-duplicated by the registry's person id. Pulled on 2026-11-03.
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