C-NRPP Certified Radon Companies in Greater Sudbury

Every company holding current Canadian National Radon Proficiency Program certification that is based in Greater Sudbury, or that names Greater Sudbury in its own service area. Listed free, whether or not they know this page exists.

Two lists, because the difference is a fact and the alternative is a guess. The first is companies whose registered address is here. The second is companies based elsewhere in Ontario that state they cover this area. We do not assume that a firm in one town serves the next one over, so if you do not see enough names, the full Ontario list has everyone.

Based in the Greater Sudbury Area, 2

Their registered address with C-NRPP is in this area. The town on each card is the one they gave the registry.

Certified to Install the Fix

Sudbury Radon Solutions

Based in Sudbury, Ontario
measurementmitigationcommercial measurement
Serves Sudbury (their own stated coverage)

Certified to Measure Only

Frederick Breaks

Based in Sudbury, Ontario
measurement
Serves Sudbury (their own stated coverage)

Cover Greater Sudbury from Elsewhere in Ontario, 1

Based somewhere else, but Greater Sudbury appears in the service area they gave the registry themselves.

Certified to Measure Only

Pinchin Ltd.

Based in Kingston, Ontario · website
measurementcommercial measurementcommercial mitigation
Serves Mississauga; Tilbury; Sudbury (their own stated coverage)

What the Two Certifications Mean

C-NRPP certifies separately for measurement, finding out what a home reads, and for mitigation, installing the system that fixes it. Plenty of companies hold only one. If a test has come back high, you want a company on the first list above.

See also: the Greater Sudbury radon map, every certified company in Ontario, and what counts as a safe level.

Certification data from the Canadian National Radon Proficiency Program public registry, read on 5 September 2026. Service areas are each company's own words. Nothing on this page is paid for.