Radon testing and mitigation in Airdrie

Is radon a concern in Airdrie homes?

It is reasonable to assume so, although nobody has published a number for Airdrie itself. The 2017 southern Alberta study took some of its out-of-Calgary homes from an area it lists as Airdrie East, and it reports no separate result for Airdriesource. An Airdrie percentage would have to be invented, and we will not print one.

The figures that stand up come from a wider area. In the Cross-Canada Survey of Radon Exposure, about 1 in 6 houses in the Calgary area came in at or above 200 Bq/m³source. The same survey puts about 1 in 6 residential buildings across Alberta at or above that mark, as a weighted provincial valuesource. Neither of those is an Airdrie result. They describe the city next door and the province around it, and they are reason enough to measure here. The research is laid out in our guide to the radon maps and surveys that cover the Calgary region.

Health Canada notes that levels differ between houses, even similar ones side by side, and that a test is the only way to be sure of a home's levelsource. A regional share tells you how often high readings turn up across thousands of basements. It cannot tell an Airdrie owner which side of the guideline one particular basement falls on.

Why does a recently built Airdrie house still need a radon test?

Because most of Airdrie is recent construction, and recent construction has not gone with lower radon in the published research. In the 2021 census, about 73% of Airdrie's dwellings had been built in 2001 or later, and about 41% between 2011 and 2021source. Airdrie had 74,100 residents in the 2021 federal census and 93,957 in the city's own census of April 1, 2026source. A city that adds people at that pace keeps adding new houses too.

Airdrie sits just north of Calgary and works as a commuter city. The City of Airdrie's 2026 housing assessment says 57% of the local workforce commutes outside the city for worksource. For those households the Airdrie address is where evenings, nights and weekends are spent. The air in that house is the air worth measuring.

The usual objection is that the house is new, and three studies from the last decade answer it. In the 2017 southern Alberta study, homes built in 1992 or later averaged 31.5% more radon than older homes, 142 against 108 Bq/m³source. A 2019 study of 11,727 Prairie buildings linked higher radon with more recent construction, larger floor area, fewer storeys, higher ceilings and less window openingsource. A 2021 study found that Canadian houses built in the 2010s and 2020s averaged 131 Bq/m³, against 28 Bq/m³ for Swedish houses of the same yearssource. None of the three measured Airdrie separately. Read together, they leave no ground for skipping the test in a young house. Health Canada recommends a radon test in every home, regardless of location or building typesource, and a recent Airdrie build date does not change that.

Which Airdrie homes have a radon rough-in?

In Airdrie the answer turns on the date the building permit was applied for, and the completion year can mislead. Alberta's 2014 building code added protection against soil gas for new buildings and became mandatory on November 1, 2015, when its transition period ended. A project whose permit application had already been received could still be built under the earlier code, so homes whose building permits were applied for before November 1, 2015 generally were not required to have a radon rough-insource.

Set that date against the age of the city. About 18% of Airdrie's dwellings in the 2021 census were built between 2016 and 2021source. That is the group where a rough-in is most likely. The much larger group built from 2001 up to the rule should not be expected to have one. A house completed in 2016 sits on the line: its permit may have gone in before the cutoff, so the completion year alone does not settle it.

The code in force today, the National Building Code 2023 Alberta Edition, requires new homes to be given the rough-in for a radon extraction system: a capped, labelled pipe through the floor that opens into granular material belowsource. The requirement stops at the pipe. No fan, no exhaust and no measurement come with it. A stub in an Airdrie mechanical room shows the house was built under the rule. It shows nothing about the radon level. When a test does call for a system, the stub is the natural place to start, as explained under activating a builder's radon rough-in.

Does the neighbourhood tell you anything about radon?

No. No source gives a radon level for any Airdrie neighbourhood, and we do not assign one.

The City's planning documents do sort communities by stage. They treat Old Town, Airdrie Meadows, Jensen, Edgewater, Big Springs, Meadowbrook, Thorburn, Woodside and Fairways as established areas. They treat Kings Heights, Ravenswood, Coopers Crossing, Windsong, Lanark, Midtown, Chinook Gate and Wildflower as newer or still developing ones. That grouping is about planning status. It is not a construction date for any single house, and it is not a radon reading.

Two questions decide things at any Airdrie address. When was the building permit applied for? What does a test in that house show? We take requests from all of these communities and from the rest of the city, and the full coverage list is on the service areas page.

What changes in a row house, a semi-detached home or a basement suite?

The test stays the same. What can change is the pipe route and who has to agree to it. About 65% of Airdrie's dwellings in the 2021 census were single-detached houses, about 15% were row houses and about 6% were semi-detachedsource. Attached homes are a real share of the city, not an exception.

An attached unit with its own basement or slab is tested by itself, because a reading taken on the other side of a party wall does not carry over. The practical difference shows up at the design stage. A middle unit has fewer outside walls, so there are fewer places for the exhaust to leave the building. Where a condominium corporation looks after the exterior, ask the board before any work is booked, and we can supply a sketch of the proposed route for that conversation. The page on radon in townhomes and row houses goes further.

A basement suite puts a household on the lowest level of the house, so the suite is where the detector belongs. Health Canada's placement advice is a regularly occupied room on the lowest lived-in levelsource. In a house with a suite, that room is downstairs, and a reading from the main floor does not stand in for it. If a system is needed, it draws on the soil beneath the slab, so the suite and the floors above are served by the same installation.

Is Airdrie's tap water part of the radon question?

Not for a home on the city supply. Airdrie buys its drinking water, already treated, from the City of Calgarysource. Health Canada notes that radon escapes from surface water and from municipally treated water before it reaches the distribution systemsource. Inside the city the question is soil gas under the basement floor, and an air test answers it. We do not suggest a water test for a house connected to Airdrie's mains.

Are acreages near Airdrie a different case?

Yes, different enough to treat separately from a house on a city lot. The Cross-Canada Survey of Radon Exposure reports about 1 in 6 urban and about 1 in 4 rural properties in the Prairies and Northwest Territories at or above 200 Bq/m³source. A 2024 study of 42,051 Canadian residential properties found that people in rural, lower-density communities experience as much as 31.2% greater average residential radon than urban equivalentssource. That study attributed a majority of the gap to proximity to drilled groundwater wells, and not to using water from themsource.

The wording matters. It is the nearness of a drilled well that the researchers point to, not what comes out of the kitchen tap. These are Prairie and national findings, and nobody has measured the countryside around Airdrie as a separate group. For an acreage owner the step is the same air test, placed the same way. Mention a drilled well when you ask for an assessment, so its position relative to the house is noted on the visit.

How does a radon test work in an Airdrie home?

A long-term detector is left in place through the cold months and then read by a laboratory. Health Canada recommends measuring for three to twelve months, and the minimum is 91 dayssource. Timing matters as well: 91 days or more of the test should fall in the heating season, when windows are closed and indoor radon tends to be highestsource, and an Airdrie winter gives that window without any change to how the family lives.

Airdrie tests arranged through Calgary Radon Pro are placed by Plinio Neto. He holds the C-NRPP Radon Measurement Professional certification (CRT-202965) in his own name, and anyone can look him up in the C-NRPP list of certified professionals. Health Canada recommends hiring a professional certified by the Canadian National Radon Proficiency Programsource. The choice between test types is covered on our main radon testing page, and the day-by-day protocol is on the long-term radon testing page.

Reading the result is simple. Health Canada's recommendation to act applies when the annual average is above the Canadian guideline of 200 Bq/m³source. Above that figure the advice is to mitigate within one year, sooner the higher the level, and to bring radon as low as reasonably achievablesource. Below the guideline the decision belongs to the owner, and no level of radon is considered risk-free. An Airdrie owner with a result under the guideline may still choose to reduce it. That is a fair choice, and so is retesting later.

How is a radon system installed in an Airdrie house, and how is the result confirmed?

A pipe draws soil gas from under the slab and a fan sends it outdoors, and then the house is tested again. Health Canada describes sub-slab depressurization as the most common and effective methodsource. In an Airdrie house our standard layout puts the fan on the pipe, indoors, in the basement. From there the exhaust goes out through the rim joist or, in some layouts, up above the roof. We do not run pipe up the outside of the house. The Canadian mitigation standard allows discharge above the roof or through a side wall near ground level, and says side-wall discharge shall be favoured in cold weather areassource.

Where the house has a rough-in, the builder's stub is the suction point. Where it does not, which should be expected in much of Airdrie, a hole is cored through the basement floor instead. The installation is done by Plinio Neto, whose C-NRPP Radon Mitigation Professional certification (CRMT-202966) is likewise personal to him. Health Canada notes that a system can usually be installed in less than a day and, in most homes, reduces radon by more than 80%source. That figure describes many houses taken together, not one Airdrie basement in particular. We quote no final number before the fan is running.

Confirmation comes in two steps. After the fan in your Airdrie basement has run for a while, the installer takes a short verification reading, which shows the immediate change. The long-term confirmation uses an independent laboratory kit that you place and mail yourself, which keeps the final number out of the installer's hands. Health Canada recommends testing after a system is installed, every five years while it stays active, and again after renovations that affect the structure or ventilationsource. Finishing an Airdrie basement or adding a suite can be that kind of renovation.

System types and design choices are explained on the main radon mitigation page, and the items that raise or lower a quote are listed under what radon mitigation costs.