Town
C-NRPP certified radon testing and mitigation businesses with an office in Saint-mathias-sur-richelieu, Quebec, and the 2024 survey figure for its census division, dated.
Photo: Fralambert, CC BY-SA 3.0, cropped, via Wikimedia Commons.
26.4
%About 1 in 4 properties
Share of properties in the La Vallée-du-Richelieu census division, which includes Saint-mathias-sur-richelieu, with radon at or above 200 Bq/m³ in the 2024 Cross-Canada Radon Survey. The survey reports no figure for Saint-mathias-sur-richelieu itself.
1
Businesses with a business address in Saint-mathias-sur-richelieu and at least one active C-NRPP credential, as of 2026-10-18. Providers based elsewhere may also serve Saint-mathias-sur-richelieu.
Sorted alphabetically by business name. Every C-NRPP certified business is listed free, and payment never affects the order.
C-NRPP
Service area
St-mathieus-sur-richelieu
Last registry check
Certified providers near Saint-mathias-sur-richelieu
Businesses for hire with an active C-NRPP credential and an office elsewhere in the La Vallée-du-Richelieu census division, placed by postal code area. Rural postal areas, which can span several divisions, are left out, so this list may miss a rural business.
Sorted alphabetically by business name. Every C-NRPP certified business is listed free, and payment never affects the order.
| Business | Town | Services |
|---|---|---|
| Immobilier Gestimpros | Beloeil | Mitigation |
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 2026-10-18. Census divisions by postal code area, adapted from Statistics Canada, 2021 Census forward sortation area and census division boundary files; not an endorsement by Statistics Canada.
Grant · Danville, Dixville, Ham-Sud, Petite-Rivière-St-François, Plessisville, St-Valérien, Varennes, Victoriaville
Radon is named as eligible. Current. As of 2026-09-18.
Grant
Up to $1,500 toward home radon mitigation. Radon is named as eligible. Current. As of 2026-09-01.
Grant
Up to 95% of recognized cost to a maximum of $20,000, raised to $25,000 for households at or below the applicable income level. Radon eligibility not verified. Open; intake varies by MRC. As of 2026-09-18.
Rebate or reimbursement · Vaudreuil-Dorion
50% of installation, maximum $500 per residence, plus $5 detectors. Radon is named as eligible. Current for 2026. As of 2026-09-18.
Free or subsidized testing
Radon is named as eligible. Current. As of 2026-09-18.
Province or territory
Radon by census division, and every certified provider in Quebec.