C-NRPP · CRT-201727

Doug Tarry

Doug Tarry Homes

Latest credential check on this page: October 13, 2026. Each record carries its own date. Canadian sources and verification.

Credential number: CRT-201727
Credential body: Canadian National Radon Proficiency Program (C-NRPP)
Status: Current in the source on October 13, 2026. Certification, not a provincial licence.
Valid through: July 1, 2028
Service: testing
City: St. Thomas
Province / country: Ontario, Canada
Phone: (519) 637-6819
Official source: C-NRPP public finder · Check CRT-201727

Enter CRT-201727 in the official certification check and match the name and expiry before hiring. Certification belongs to the person named here.

Fig. 1 — St. Thomas, approximate. Pin marks the official Canadian Geographical Names Database city reference point, not a business address or service area.

Map source: Natural Resources Canada — St. Thomas. Contains information licensed under the Open Government Licence – Canada.

Radon testing in Ontario

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