Radon Testing for Calgary Home Buyers and Sellers

Follow the Health Canada testing duration

Health Canada recommends a long-term radon test for at least three months. Longer testing better reflects normal variation than a brief measurement. Follow the device instructions for placement and closed-building conditions where specified.

Ask for useful existing records

If a seller has tested, ask for the test type, device, location, dates, result and any mitigation documentation. A result from a different unit, floor or short time period may not answer the question for the property being purchased.

Plan around a normal purchase timeline

Because a long-term test may not fit an offer condition, buyers can discuss available records, contract options and a post-possession test plan with their advisors. Sellers planning ahead can test before listing and keep the complete report.

• Use a recognized long-term testing device and instructions.
• Record exact location and start and end dates.
• Do not relocate or disturb the device during the test.
• Use a qualified mitigation professional if action is recommended.

Treat mitigation as a technical scope

If a result is elevated under current Health Canada guidance, obtain qualified mitigation advice. Keep installation, fan, warranty and post-mitigation testing records for ongoing maintenance and future resale.