Calgary Commercial Radon Testing: Guide for Property Owners and Managers

Calgary commercial Radon testing has become a critical responsibility for property managers, business owners, and developers across Alberta. Radon gas is commonly found in commercial buildings with limited ventilation.

Alberta Radon Regulations: An overview

Alberta Radon regulations are workplace safety standards and real estate disclosure practices. To test for radon, those with high occupancy or specific uses, such as schools, daycare centers, and healthcare facilities, face stricter expectations.

Provincial Radon Guidelines and Legal Requirements

Health Canada sets a national Radon reference level of 200 Bq/m³. Any commercial space exceeding this threshold must be mitigated as quickly as possible. Employers in Alberta are also expected to maintain a safe work environment under OH&S legislation, which may include Radon testing in specific workplaces.

Building Code Radon Compliance for Commercial Properties

Alberta's building code Radon compliance requirements have evolved to address Radon risks. The Alberta Building Code has mandated Radon rough-ins (such as sub-slab piping) for new buildings, with specific measures for commercial structures depending on their use and occupancy.

Radon Mitigation Standards in Alberta's Building Code

For buildings exceeding the 200 Bq/m³ threshold, radon mitigation systems—such as sub-slab depressurization (SSD) or improved ventilation—are required.

Health Canada's Role and National Reference Levels

Health Canada provides guidance and data for Radon risk areas across the country. In Calgary, many neighborhoods show higher-than-average indoor Radon levels. 

How to Test for Radon in Commercial Buildings

The ideal time for Calgary commercial radon testing is from October to April, when buildings are closed, and Radon levels are highest. Long-term testing (90 days or longer) provides the most accurate assessment.

Recommended Testing Timeframes and Seasons

Start with long-term tests using certified devices, and consider short-term tests for quicker decisions in real estate or lease situations. Retesting is advised every 2-5 years or after any major building renovation.

Air Quality Testing for Businesses

Professional testers use Continuous Radon Monitors (CRMs), alpha track detectors, and electret ion chambers. Many businesses now incorporate radon testing into their broader air quality testing efforts. 

Enforcement and Liability

Although radon regulations vary by province, failing to address high radon levels can leave property owners vulnerable to health risks. This is especially true if occupants experience health effects. Some commercial leases now include Radon disclosures and responsibilities, underscoring the importance of proactive testing.

What to Look for in a Qualified Radon Tester

• C-NRPP certification

• Commercial testing experience

• Transparent pricing and clear reporting

• Local compliance knowledge

• Ability to assist with mitigation if needed

Local Compliance Knowledge and Industry Experience

A qualified tester should understand regional geology, compliance needs, and best practices for Calgary's commercial building types—from retail complexes to office towers.

Ensuring Compliance and Safe Indoor Air in Calgary Workspaces

Protecting indoor air quality is more than a regulatory requirement—it's a commitment to your staff, tenants, and the long-term value of your property. Calgary commercial radon testing is the first step in identifying risks and maintaining a safe, legally compliant commercial space.

Key Takeaways for Building Owners and Managers

• Radon testing is essential in Calgary due to geological risk.

• Compliance with Alberta Radon regulations protects your liability.

• Long-term testing provides the most reliable results.

Proactive Radon Management

• Healthier work environments

• Improved tenant satisfaction

• Easier compliance with building codes and air quality standards

• Stronger real estate value

Frequently Asked Questions

How Often Should I Test My Commercial Building?

Checks may be needed every 2 to 5 years, or after major renovations or HVAC changes. For high-risk buildings, annual checks may be required.

Are There Fines for Non-Compliance in Alberta?

While there are no direct fines for Radon levels, failure to maintain a safe workplace can result in OH&S enforcement.

Why is Calgary Commercial Radon Testing important for property owners and managers?

It helps ensure safety, compliance, and liability protection. Commercial buildings can accumulate high radon levels, and testing confirms indoor air quality, protects occupants, and guides any needed mitigation.