Town
C-NRPP certified radon testing and mitigation businesses with an office in Saint-jean sur richelieu, Quebec, and the 2024 survey figure for its census division, dated.
Photo: Fralambert, CC BY-SA 3.0, cropped, via Wikimedia Commons.
17.9
%About 1 in 6 properties
Share of properties in the Le Haut-Richelieu census division, which includes Saint-jean sur richelieu, with radon at or above 200 Bq/m³ in the 2024 Cross-Canada Radon Survey. The survey reports no figure for Saint-jean sur richelieu itself.
1
Businesses with a business address in Saint-jean sur richelieu and at least one active C-NRPP credential, as of 2026-11-03. Providers based elsewhere may also serve Saint-jean sur richelieu.
Sorted alphabetically by business name. Every C-NRPP certified business is listed free, and payment never affects the order.
C-NRPP
Last registry check
Certified providers near Saint-jean sur richelieu
Businesses for hire with an active C-NRPP credential and an office within 50 km of Saint-jean sur richelieu, closest first. Each business is placed at the centre of its office’s postal code area and Saint-jean sur richelieu at the centre of its built-up area, so distances are approximate.
Sorted by distance, closest first. Every C-NRPP certified business is listed free, and payment never affects the order.
| Business | Town | Distance (km, approximate) | Services |
|---|---|---|---|
| Renov-Action Michel Haineault Inc. | Saint-mathias-sur-richelieu | 10 | Mitigation |
| LEGAULT-DUBOIS INC. | La Prairie | 17 | Measurement |
| AtmoTest | Brossard | 17 | Measurement |
| Action-Radon.net Inc. | Saint-Hubert | 18 | Measurement, Mitigation, New construction (CRNCH) |
| Radon Expert LM | Henryville | 24 | Measurement, Mitigation |
| Immobilier Gestimpros | Beloeil | 25 | Mitigation |
| WSP | Montreal | 27 | Measurement |
| exp Services Inc. | Longueuil | 28 | Measurement, Mitigation |
| Inspection Domiland Inc. | Longueuil | 28 | Measurement, Mitigation |
| Intervention Radon | Boucherville | 29 | Measurement, Mitigation |
| Le Groupe Gesfor Poirier, Pinchin, Inc. | Saint-Leonard | 34 | Measurement, Mitigation |
| Groupe ABS | Anjou | 36 | Measurement |
| Spheratest | Montréal | 38 | Measurement |
| Radon Maison | Montreal | 39 | Measurement |
| Alerte radon Granby INC | Granby | 41 | Measurement, Mitigation |
| Eco Radon Solutions | Laval | 46 | Measurement, Mitigation |
| Radon Noribec | Laval | 47 | Mitigation |
| Radon Bouclier | Kirkland | 47 | Measurement, 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 2026-11-03. Distances use Statistics Canada, 2021 Census forward sortation area, population centre and census subdivision boundary files, adapted; not an endorsement by Statistics Canada.
People and homes in Saint-jean sur richelieu, 2021 Census
Figures for the municipality of Saint-Jean-sur-Richelieu. They describe the homes and do not measure radon. The shares are of households, come from the census long-form sample and are shown only where there are at least 500 households.
| Measure | Value |
|---|---|
| People | 97,873 |
| Homes lived in | 42,913 |
| Single-detached houses (%) | 50 |
| Rented (%) | 40 |
| Built in 1960 or before (%) | 18 |
| Built 1961 to 1980 (%) | 28 |
| Built 1981 to 2000 (%) | 28 |
| Built 2001 to 2021 (%) | 26 |
Statistics Canada, 2021 Census of Population, tables 98-10-0002-01 (population and dwelling counts), 98-10-0240-01 (structural type of dwelling by tenure) and 98-10-0233-01 (dwelling condition by tenure, period of construction), census subdivisions, adapted. This does not constitute an endorsement by Statistics Canada.
Laws, codes and decisions on radon that apply in Saint-jean sur richelieu
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 | Quebec | In 2021 the RBQ changed the Construction Code's maximum radon threshold from 800 to 200 Bq/m³, referring to Health Canada's level. The amendment added a vertical passive radon exhaust stack to the rough-in already required; the regulatory impact analysis describes a basic pipe infrastructure to be completed with a passive or active system if indoor radon exceeds the threshold. | Construction Code (Quebec), radon amendment announced 24 November 2021 | In force | 2021-11-24 |
| Real estate disclosure | Quebec | The seller's declaration form includes a radon line, and OACIQ publishes guidance on keeping radon from derailing a transaction. Quebec's civil law system differs from the common law elsewhere in Canada. | OACIQ seller declarations form (radon line); OACIQ guidance on radon in transactions | Guidance | no data |
| Rental housing | Quebec | Four Quebec tenancy decisions in which radon above Health Canada's guideline was held to breach the landlord's repair and habitability obligations. Tenancy tribunal decisions, not court precedent. | Barak c. Osterrath, 2012 CanLII 150609; Pickard c. Arnold, 2015 CanLII 129833; Bramley c. Vanwynsberghe, 2017 QCRDL 11313; Vanderwerf c. Dolan, 2019 QCRDL 37417 | Tribunal or court decision | no data |
Rules that apply across Canada are on the Quebec page.
The radon rules dataset; each row cites its primary source and the date checked.
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.
Free or subsidized testing
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
Free long-term (91 days or more) alpha track test kit, mailed back for analysis. Current. As of 2026-10-27.
Province or territory
Radon by census division, and every certified provider in Quebec.
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