Best Radon Testing & Mitigation in Québec

About Radon in Québec, Quebec

Last updated: March 2026

Québec is served by C-NRPP certified radon professionals listed on RadonFinder.ca. Quebec's radon risk is concentrated in regions underlain by the Grenville geological province, including the Laurentians, Eastern Townships, the Outaouais, and parts of Mauricie, where uranium-bearing gneiss and granite produce elevated soil gas. The Montreal urban area, sitting on the St. Lawrence Lowlands, generally shows lower levels. Quebec has a high proportion of older housing stock in cities like Quebec City and Trois-Rivières, and older construction with block foundations and open sump pits tends to allow more radon entry.

Typical Mitigation Cost in Quebec

$2,200–$3,600

Near national average

Montreal-area labour rates apply in the urban corridor; rural and Laurentian regions may see higher costs due to contractor travel.

•Foundation type: block, poured concrete, or stone foundations in older Quebec homes
•Open sump pits and floor drains as radon entry points
•Finished vs. unfinished basement: finishing adds pipe-routing complexity
•Bilingual service availability in some rural areas
•Age of home: pre-1980 homes often require more sealing work

Showing 1–9 of 9 professionals in Québec

Radon Provincial

Lac-Beauport, QC

Verified

5.0(394)Google

Radon Provincial installs radon mitigation systems to help homeowners reduce radon levels. With 15+ years of experience and 4,000+ satisfied clients across Eastern Canada, we also sell radon test kits directly, and our in-house engineer backs every installation with solid technical expertise.

TestingMitigation

(581) 628-7445Call View Profile

Le Groupe Gesfor Poirier, Pinchin, Inc.

Québec, QC

4.5(6)Google

Le Groupe Gesfor Poirier, Pinchin Inc. (Head Office) is a C-NRPP certified radon testing professional serving Quebec, QC and across QC. Their certified inspectors provide accurate radon measurements for homes and businesses.

MitigationTesting

(418) 681-1999Call View Profile

Englobe Corp.

Québec, QC

4.0(22)Google

Englobe Corp. is a C-NRPP certified radon testing and mitigation professional serving Quebec, QC and surrounding areas. They offer complete radon solutions from initial testing through to mitigation system installation.

TestingMitigation

(418) 704-8091Call View Profile

Détection Magnova

Québec, QC

Offers radon measurement and mitigation services. Most recommended in Eastern Canada with 15+ years of experience and 4000+ satisfied clients.

Testing

(581) 628-7445Call View Profile

AccuStarCanada / Rn222 inc.

Québec, QC

Canadian company offering C-NRPP approved long term, short term, and water radon testing solutions & products nationwide. NELAP accredited for reliable radon testing.

TestingMitigation

(418) 476-8118Call View Profile

Gaz Radon Québec

Québec, QC

Gaz Radon Québec is a C-NRPP certified radon testing professional serving Québec, QC. Their certified inspectors provide accurate radon measurements for homes and businesses.

MitigationTesting

View Profile

Vincent Robitaille

Québec, QC

Testing

View Profile

OHE Consultants

Mississauga, ON

4.9(14)Google

OHE Consultants is a C-NRPP certified radon testing and mitigation professional serving Mississauga, ON and across ON. They offer complete radon solutions from initial testing through to mitigation system installation.

TestingMitigation

(416) 707-5335Call View Profile

SDG Projets

Levis, QC

Testing

View Profile

Local radon data

How common is high radon in Québec?

Moderate

1 in 5.6

homes tested in the Québec area had radon above Health Canada's action level of 200 Bq/m³. Your home can be very different from its neighbours, so the only way to know your level is to test.

Québec

1 in 5.6

Quebec

1 in 5.3

Canada

1 in 5.6

Postal areas nearby with the highest estimates

1,120 homes tested in the 2024 Cross-Canada survey. Source: the RadonFinder.ca radon map of Canada, built on the 2024 Cross-Canada survey, Health Canada data and Statistics Canada census data.

Open Québec on the radon map

Test before you call a pro

Know your radon level in Québec first

A home monitor tells you whether you need mitigation at all, and later confirms it worked. Health Canada bases decisions on a 3-month average, ideally through winter.

Best Overall

Airthings Corentium Home

~$170–190 CAD C-NRPP tested

View on Amazon.ca

Newest Model

Airthings Corentium Home 2

~$230–250 CAD

View on Amazon.ca

Compare all detectors · As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

Frequently Asked Questions: Radon in Québec

RadonFinder.ca lists C-NRPP certified radon testing and mitigation professionals serving Québec, Quebec. Browse the directory above to compare professionals by services offered, certifications, and reviews.

Most homeowners in Quebec pay between $2,200 and $3,600 for a complete radon mitigation system. Actual cost depends on your foundation type, home size, and the complexity of the installation. Request quotes from multiple professionals to compare.

Québec follows Health Canada's national guideline of 200 Bq/m³. If your home tests above this level, Health Canada recommends taking action to reduce radon within two years for levels between 200 and 600 Bq/m³, and within one year if above 600 Bq/m³.

Yes. Health Canada recommends testing every home in Canada, regardless of age, construction type, or location. Radon levels vary from house to house and even neighbouring homes can have very different readings. A long-term test of at least 91 days during the heating season is the most reliable method.

The most common system is active sub-slab depressurization (ASD). A certified professional installs a pipe through your foundation slab connected to a fan that draws radon from beneath the home and vents it safely above the roofline. Installation typically takes one day.