Best Radon Testing & Mitigation in Saint John

About Radon in Saint John, New Brunswick

Last updated: March 2026

Saint John is served by C-NRPP certified radon professionals listed on RadonFinder.ca. New Brunswick has moderate to elevated radon risk, with the highest levels concentrated in areas underlain by uranium-bearing geological formations, particularly around Sussex, the Saint John River valley, and parts of the Fredericton region. The province's mix of older housing stock and varied geology means test results can differ significantly from one neighbourhood to the next. Health Canada surveys indicate a meaningful proportion of New Brunswick homes exceed the guideline, and testing is recommended across the province.

Typical Mitigation Cost in New Brunswick

$2,000–$3,500

Near national average

Market is smaller than central Canada; some rural areas may see higher costs due to limited contractor availability.

  • •Foundation type: many older NB homes have stone or block foundations
  • •Urban (Moncton, Fredericton, Saint John) vs. rural contractor availability
  • •Sub-slab conditions and required number of suction points
  • •Basement finish level
  • •Crawlspace vs. basement construction type

Showing 1–4 of 4 professionals in Saint John

Calvin Consulting Group Ltd.

Saint John, NB

Calvin Consulting Group Ltd. is a C-NRPP certified radon testing professional serving Saint John, NB and surrounding areas. Their certified inspectors provide accurate radon measurements for homes and businesses.

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East Coast Home Inspection Ltd.

Hampton, NB

Offers CNRPP certified radon services. Serves Saint John, Quispamsis, Rothesay, Hampton, and other communities in Southern New Brunswick.

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Calvin Consulting

Calgary, AB

Calvin Consulting is a C-NRPP certified radon testing professional serving Calgary, AB and surrounding areas. Their certified inspectors provide accurate radon measurements for homes and businesses.

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Hive Engineering

Mebertou, NS

Hive Engineering is a C-NRPP certified radon testing professional serving Mebertou, NS and across NS. Their certified inspectors provide accurate radon measurements for homes and businesses.

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Frequently Asked Questions: Radon in Saint John

RadonFinder.ca lists C-NRPP certified radon testing and mitigation professionals serving Saint John, New Brunswick. Browse the directory above to compare professionals by services offered, certifications, and reviews.
Most homeowners in New Brunswick pay between $2,000 and $3,500 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.
Saint John 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.

Browse Nearby Cities in New Brunswick

Other areas with radon professionals

Radon professionals in Fredericton
3 professionals listed
Radon professionals in Moncton
2 professionals listed
Radon professionals in Bathurst
2 professionals listed
Radon professionals in Quispamsis
1 professional listed
Radon professionals in Riverview
1 professional listed
Radon professionals in Sainte-Rose
1 professional listed
Radon professionals in Hampton
1 professional listed
Radon professionals in Miramichi
1 professional listed
Radon professionals in Riviere-du-Portage
1 professional listed

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Radon Resources for Saint John

Tools and guides to help you understand radon risk and take action.

Check your radon risk
Estimate your risk based on province, home age, and foundation type.
Understand your test results
Learn what Bq/m³ means and when action is required.
DIY radon test kits
Compare test kit options starting from $10.
Radon guides & articles
In-depth guides on testing, mitigation, and health risk.
Browse all provinces
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Radon FAQ
Answers to the most common questions about radon.