Town
Radon testing and mitigation businesses with an office in Terrebonne, Quebec, and the 2024 survey figure for its census division, dated.
Photo: Fralambert, CC BY-SA 3.0, cropped, via Wikimedia Commons.
6.7
%About 1 in 15 properties
Share of properties in the Les Moulins census division, which includes Terrebonne, with radon at or above 200 Bq/m³ in the 2024 Cross-Canada Radon Survey. The survey reports no figure for Terrebonne itself.
1
Businesses with an office in Terrebonne that say on their own website, or in a public register, that they do radon testing or mitigation, as of 2026-11-05. Businesses based elsewhere may also serve Terrebonne.
Sorted alphabetically by business name. Every business is listed free, and payment never affects the order.
Terrebonne, QC
Services
Last checked
Radon businesses near Terrebonne
Radon businesses with an office within 50 km of Terrebonne, closest first. Each business is placed at the centre of its office’s postal code area and Terrebonne at the centre of its built-up area, so distances are approximate.
Sorted by distance, closest first. Every business is listed free, and payment never affects the order.
| Business | Town | Distance (km, approximate) | Services |
|---|---|---|---|
| AtmoTest | Montréal | 7 | Measurement |
| ECORADON | Laval | 13 | Measurement, Mitigation, New construction |
| L&B RADON INC. | Rosemère | 13 | Measurement, Mitigation |
| Assistance Radon | Laval | 15 | Measurement, Mitigation, New construction |
| Air Saphir | Sainte-Thérèse | 16 | Measurement |
| Radon maison Inc. | Montréal | 16 | Measurement |
| Spheratest | Montréal | 16 | Measurement |
| Groupe ABS inc. | Montréal | 16 | Measurement, Mitigation |
| Le Groupe Gesfor, Poirier, Pinchin inc. | Montréal | 19 | Measurement, Mitigation |
| Intervention Radon Inc. | Boucherville | 24 | Mitigation |
| Inspection Domiland Inc. | Longueuil | 25 | Measurement, Mitigation |
| Radon XPro | Longueuil | 27 | Measurement, Mitigation |
| Gestion Radon Laurentides | Saint-Jérôme | 29 | Measurement, Mitigation |
| Radon Évolution | Saint-Jérôme | 29 | Measurement, Mitigation |
| exp Services Inc. | Longueuil | 32 | Measurement |
| Radon Expert LM | Longueuil | 32 | Measurement, Mitigation |
| Action-Radon.net Inc. | Saint-Hubert | 34 | Measurement, Mitigation |
| Akton Injection | Baie-D'Urfé | 40 | Measurement, Mitigation |
| LEGAULT-DUBOIS INC. | La Prairie | 40 | Measurement |
| QuebecSpec | Saint-Constant | 41 | Mitigation |
| Solution RN | Delson | 41 | Measurement, Mitigation |
| Renov-Action Michel Haineault Inc. | Mont-Saint-Hilaire | 43 | Mitigation |
| Enspeco | Vaudreuil-Dorion | 45 | Measurement, Mitigation |
| Radon Expert Solutions Inc. | Morin-Heights | 48 | Measurement, Mitigation |
Canadian Radon Services Index, provider listings: each business’s own website and social pages, public company registers and business directories, every fact with its source and the date checked. 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 Terrebonne, 2021 Census
Figures for the municipality of Terrebonne. 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 | 119,944 |
| Homes lived in | 45,247 |
| Single-detached houses (%) | 62 |
| Rented (%) | 24 |
| Built in 1960 or before (%) | 5 |
| Built 1961 to 1980 (%) | 21 |
| Built 1981 to 2000 (%) | 36 |
| Built 2001 to 2021 (%) | 38 |
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 Terrebonne
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.
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