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Radon in BC: Levels, Testing, Fixing It and the Rules
Radon is in every part of BC, but not evenly. On the BC Centre for Disease Control's BC Radon Map, built from the BC Radon Data Repository, about 1 in 3 homes tested in the Interior Health region and about 1 in 5 in Northern Health are estimated to be over Health Canada's radon guideline, against about 1 in 100 in the Vancouver Coastal and Island Health regions. This page covers what your number means, how to test and fix it, and the BC rules.
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On this page: Radon Levels · By Area · Testing · How It Works · Cost · Building Code · Buying or Selling · FAQ · Free Quote
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What Your Radon Level Means
From Fresh Air to Canada's Guideline
Radon is measured in becquerels per cubic metre (Bq/m³). Here is where a long-term result sits next to the levels that matter in Canada, drawn to scale up to 300, and how homes in each part of BC tested.
radoncare.ca
5 to 30
85
100
125
148 US
200
300
How BC Homes Tested
Estimated share of homes in each range of radon levels (Bq/m³), by health authority, from the BC Radon Map
Interior Health
40%
27%
27%
Under 100
100 to 200
200 to 600
Northern Health
56%
22%
18%
Under 100
100 to 200
200 to 600
Fraser Health
85%
11%
Under 100
Vancouver Coastal
95%
Under 100
Island Health
95%
Under 100
About 5 to 30Bq/m³
Fresh outdoor air. Radon from the ground gets diluted in open air, and the level changes from day to day and from region to region.
85Bq/m³
The average Canadian home.
100Bq/m³
The reference level the World Health Organization suggests for countries.
125Bq/m³
The average home tested in the BC Interior in the 2024 survey.
148Bq/m³
The level where the US Environmental Protection Agency says to fix a home. A US number, shown for reference: Canada uses Health Canada's guideline.
200Bq/m³ (5.4 pCi/L)
Health Canada's guideline. Above it, Health Canada recommends lowering your level within a year, and sooner the higher it is.
300Bq/m³
The upper limit the World Health Organization and European rules set for a country's reference level.
200 Bq/m³ is not the goal. Health Canada says no level of radon is risk free, and 200 is not a recommended stopping point if your home can reasonably go lower.
Above 300: How High Radon Can Go
Not Drawn to Scale
800Bq/m³
Canada's guideline from 1988 to 2007, before it was lowered to 200.
5,446Bq/m³
The highest BC home in the 2024 survey's tables, in the Fraser-Fort George area around Prince George.
32,321Bq/m³
The highest Canadian home tested in the 2024 survey.
All levels are long-term averages, which is how Health Canada compares a home with its guideline. Sources: Health Canada (200) and its 2012 survey report (800 until 2007), the BC Centre for Disease Control (fresh air, which it puts at about 5 to 15; outdoor levels change from day to day and region to region, so we show a wider band), the World Health Organization and the US EPA (148, for reference), the BC Radon Map (how BC homes tested, BC Radon Data Repository estimates), and EU Directive 2013/59/Euratom (100 and 300, for reference), and the 2024 Cross-Canada Survey of Radon (85, 125, 5,446 and 32,321).
How BC homes tested, estimated share of homes over 200 Bq/m³ by health authority: Interior Health 33% (27% between 200 and 600, 6% over 600), Northern Health 22%, Fraser Health 4%, Vancouver Coastal 1% and Island Health 1% (BC Radon Map, BC Radon Data Repository, read October 2026).
Radon Levels by Area in BC
Every Regional District, From the BC Radon Map
The BC Interior and the north have naturally higher radon than the coast. Interior Health says that in many Interior communities about 1 in 3 homes tested are over the guideline, compared with about 1 in 113 in Metro Vancouver.
The tables give the BC Centre for Disease Control's estimate for every regional district: the share of homes over 200 Bq/m³, modelled from tests in the BC Radon Data Repository, with the number of homes tested. The Kootenays, the Shuswap and the Okanagan are highest, at about 1 in 3, with the Prince George area close behind.
Other studies find the same pattern. In the 2024 Cross-Canada Survey of Radon, 31.6% of homes in its Pacific Interior and Yukon region were at or above 200 Bq/m³, the highest share of any region in Canada. The BC Lung Foundation and Take Action on Radon have published town-by-town results too, and our town pages show the local numbers side by side: Salmon Arm, Vernon, Kelowna, West Kelowna, Kamloops and Revelstoke.
A low area does not mean a low home. Levels vary from house to house, even on the same street. Health Canada recommends testing every home, wherever it is.
The Interior and the North
- Central Kootenay: 45% over 200 (2,598 tests)
- Columbia-Shuswap: 34% over 200 (755 tests)
- Kootenay Boundary: 33% over 200 (858 tests)
- Okanagan-Similkameen: 33% over 200 (926 tests)
- North Okanagan: 31% over 200 (1,109 tests)
- Central Okanagan: 30% over 200 (4,331 tests)
- East Kootenay: 29% over 200 (1,111 tests)
- Fraser-Fort George: 29% over 200 (2,824 tests)
- Thompson-Nicola: 24% over 200 (714 tests)
- Stikine Region: 13% over 200 (60 tests)
- Bulkley-Nechako: 12% over 200 (398 tests)
- Peace River: 11% over 200 (380 tests)
- Kitimat-Stikine: 9% over 200 (259 tests)
- Cariboo: 7% over 200 (330 tests)
The Coast, the Islands and the Fraser Valley
- Fraser Valley: 8% over 200 (1,541 tests)
- Squamish-Lillooet: 8% over 200 (208 tests)
- Cowichan Valley: 3% over 200 (160 tests)
- Capital: 1% over 200 (1,107 tests)
- qathet: 1% over 200 (38 tests)
- Sunshine Coast: 1% over 200 (72 tests)
- Alberni-Clayoquot: under 1% over 200 (45 tests)
- Comox Valley: under 1% over 200 (112 tests)
- Metro Vancouver: under 1% over 200 (2,094 tests)
- Mount Waddington: under 1% over 200 (33 tests)
- Nanaimo: under 1% over 200 (344 tests)
- North Coast: under 1% over 200 (145 tests)
- Strathcona: under 1% over 200 (179 tests)
Data: BC Radon Data Repository, via the BC Centre for Disease Control’s BC Radon Map (modelled estimates from the lowest floor of homes not yet mitigated, for areas with at least 20 tests; read October 2026). The live map shows smaller areas too.
Radon and Your Health
Health Canada says radon is the number one cause of lung cancer in people who don't smoke, and people who smoke and are exposed to radon have an even higher risk. The risk is long-term, not immediate. When radon breaks down, it forms tiny radioactive particles that, once breathed in, can damage lung tissue.
Does Radon Have Symptoms?
No. You can't see, smell or taste radon, and you won't feel it. You may read online that radon causes headaches, but Canada's national radon standard says it does not produce symptoms such as coughing or headaches. That is why a test is the only way to know your level.
We're radon professionals, not doctors, so we stick to what Health Canada and peer-reviewed research support.
Health Questions?
Talk to your doctor or call HealthLink BC at 8‑1‑1.
Read more: Health Canada on radon · the Health Canada study behind its lung cancer estimate (Chen et al., 2012)
How to Test Your Home for Radon
The Best Way to Test
Our long-term test kit is the kind of test Health Canada recommends: a device on the C-NRPP list that stays in your home for at least three months. The lab analysis and a prepaid return envelope are included. Place it in the lowest level of your home where someone spends at least four hours a day, with at least three months of the test in the heating season, then mail it to the lab.
Long-Term Radon Test Kit
Lab analysis and a prepaid return envelope included. Free shipping in Alberta and BC.
$54.99
Order a Test KitPrefer to watch your levels on a screen? We also sell digital monitors, like the Airthings Corentium Home. It passed C-NRPP's testing of home radon monitors.
Where and When to Test
A basement bedroom, family room or playroom is a good spot. Health Canada says not to test in a kitchen, laundry room or bathroom. Run the test for at least 91 days, with at least 91 of them in the heating season. With the house closed up, radon usually runs higher, so a winter test gives a cautious estimate of your yearly average. A test that runs mostly in summer can read low.
Health Canada strongly recommends using a device on the C-NRPP list. Health Canada itself does not approve or certify radon detectors: the C-NRPP list is the one to check.
Are Free Radon Test Kits Worth It?
Yes. A free long-term kit from your town or regional district, often handed out in the fall, is a proper test. A library detector is a good first look: the BC Lung Foundation lists every library in BC that lends one. Be careful with a free test from a company that also sells radon systems. A test of only a few days, or a detector in the wrong spot, like right beside a sump, can show a problem a proper test would not.
What a Short Test Can and Cannot Tell You
Radon rises and falls from day to day and season to season, so a few days or weeks of readings cannot give you your yearly average. If a short test reads high enough, it can show your yearly average must be over the guideline even if radon were zero the rest of the year, so call us with the number and how many days it ran. If it reads low, it cannot rule radon out, so follow it with a long-term test of at least three months. Health Canada recommends basing a decision on a test of at least 91 days.
Health Canada: “The 200 Bq/m³ guideline applies to your average annual radon level, not short-term measurements.” (guide for radon measurements in homes)
Are Digital Radon Detectors Accurate?
The good ones are, given time. C-NRPP tests home radon monitors, and its 2024/25 report lists the Corentium Home's stated accuracy as within about 10% after 7 days at 200 Bq/m³, and within about 5% after two months. The longer a monitor runs, the more its average means.
Not every detector is that good. In 2025 Health Canada warned that various radon detectors sold on Amazon.ca may give inaccurate readings. Health Canada also suggests replacing a home monitor about five years after you buy it, unless it can be recalibrated.
How Radon Mitigation Works
From Your Test to a Lower Level
1
Test Your Home
Use a long-term test kit or a digital monitor, and test for at least three months. How to test
2
Read Your Results
Not sure what your number means? Call or text us. We'll explain what it means for your home, whatever the result.
3
High Result? Get a Free Quote
Over 200 Bq/m³, or higher than you are comfortable with? Call or text 236‑300‑7223 or request a free quote online.
4
We Fix It, Guaranteed
Two lab tests after the install show you the result, and the lab sends it straight to you. Your quote explains how our guarantee works for your home.
What a Radon System Does
Most radon comes up from the soil under the house. A radon system, called sub-slab depressurization, draws that soil gas from under your floor through a sealed pipe, with a fan, and sends it outside before it can get in. We seal the main openings in the floor, like a sump pit, so the fan pulls from the ground and not from your house.
Install Day
Most installs take one day, and the work stays in the basement or crawlspace. Dust and noise: see What Happens on Install Day?
What's Under the Slab, and Why It Matters
The material under your basement floor, sometimes called fill or backfill, is whatever the builder used, from clean, coarse gravel to sand, dirt or clay. A radon system draws air from under the whole floor. In clean gravel, the gaps between the stones let air move freely, so one system can reach all of it. Air moves much less easily through sand, dirt or clay, so a home on dense ground can need more than one suction point, or sometimes a stronger fan. That is why we run a pressure field test before deciding where the system goes.
What Canada's Standard Says
Canada's radon mitigation standard says a pressure field test shall be used to decide the number of suction points and the fan size (CAN/CGSB-149.12-2024). In most areas we work in, we already know what the ground is like, and the test confirms it for your house.
Where Our Radon Fans Are Installed
Canada's radon mitigation standard allows a radon fan outdoors only where winters are mild: 3,999 heating degree days or fewer. Heating degree days add up how far each day's average temperature falls below 18°C over a year, so the lower the number, the milder the winter. Much of southern BC is that mild, but no place in Alberta is (National Building Code 2020, Appendix C).
We still install the fan in a heated space, usually a basement, a utility room or a heated garage: it lasts longer, it's quieter, and it looks better. Canada's standard warns that a fan outdoors in the cold can ice up. We only put a fan outside when a home really needs it.
Wood Stoves, Fireplaces and Fans
Health Canada notes that exhaust fans, windows and fireplaces all change the pressure difference between your house and the soil, and that difference can draw radon indoors (Radon Reduction Guide for Canadians). A wood fire sends warm air up the chimney, and the house pulls in air to replace it, some of it from the soil. That doesn't stop us fixing it: we design every system for the way pressure in your home changes, fire or no fire.
Radon Levels After Mitigation
What to Expect, and How Fast
Each system is designed for the house it goes in. Canada's national standard for radon mitigation says a system that is properly designed and installed by certified professionals can lower radon by about 90% or more. How well a system works comes down to who designs and installs it. We've lowered the radon in every home and commercial building we've ever worked on. Every system we install comes with guaranteed results.
Once the fan is running, the radon under your floor is drawn outside, and the level in the house usually drops within a day or two. It never reaches zero, because outdoor air has some radon in it too. Our goal is the lowest level your home can reasonably reach, not just under the guideline.
After every install, two lab tests show you the result: a short test once the system is running, and a long-term test after that. The lab sends the results straight to you.
Tricky homes are the ones our technicians enjoy most. Even after more than 3,000 homes, we still run into something new now and then, and when we do, the whole team works on it together, so every job has the experience of all our crews across Alberta and BC behind it.
The Three Homes Below
Before Mitigation
335 to 960Bq/m³
After
12 to 23Bq/m³
960→23Bq/m³
Walkout bungalow, Salmon Arm
Early 2010s · finished walkout basement · in-floor heat in the slab
One suction point, with the slab scanned for heat lines before drilling.
335→14Bq/m³
Walkout duplex, Lake Country
2020s · walkout basement · builder's passive radon pipe
A newer home with a radon pipe already in it, and it still needed a fan.
455→12Bq/m³
Crawlspace home, Blind Bay
Mid 2000s lake home · uncovered dirt floor crawlspace
Sealed under a new membrane first, then the radon is drawn out from underneath it.
Readings in Bq/m³, before and after, from long-term tests, digital monitors and lab tests. Home details are approximate to protect each owner's privacy. Photos are from our installs in BC. More results on each of our town pages.
Have a result over 200 Bq/m³, or not sure what yours means? Call or text us and we'll talk it through.
How Long Does a Radon System Last?
The pipe and the sealing are there for the life of the house. The fan is the only moving part, and it runs all the time. When a fan wears out after years of running, it is replaced, and the rest of the system stays as it is.
Upkeep is close to none. Every system has a pressure gauge on the pipe, usually a U-tube manometer: when the fan is running, the liquid in the two sides sits at different heights. Glance at it now and then. If the two sides are level, the fan has stopped, so call us.
When to Test Again
- Every 5 years with a system running: Health Canada recommends it, to make sure the system still works as it should.
- The heating season after a renovation that changes the structure or ventilation, like finishing the basement, a new furnace or a new bathroom.
- The heating season after an energy retrofit, or digging next to the house.
Source: Health Canada's guide for radon measurements in homes (2026).
What Changes the Price of Radon Mitigation
A radon system costs less than installing air conditioning.
We've quoted thousands of homes, so a few details about yours are usually enough for an accurate quote, often over the phone.
- Your foundation: poured concrete, concrete block or wood.
- Your footprint: the part of the house that sits on the ground, not the total square footage.
- Additions, and any crawlspace with a dirt or gravel floor.
- Your neighbourhood. In most areas we work in, we already know whether the ground under the floor is gravel, sand, dirt or clay, and how dense it is. Ask us about yours.
- A sump pit, which we seal airtight.
- Whether the basement is finished.
Some things change the work but rarely the price: with in-floor heat we thermal-scan the slab before we drill, with a furnace or other fans we check how they change the pressure in your home, and an HRV may need balancing afterward.
Questions about your home? Talk to a radon expert.
Radon Grants and Help Paying in BC
The Lungs Matter Grant
The Canadian Lung Association's Lungs Matter program can put up to $1,500 toward mitigation. You may qualify if:
- You have been diagnosed with lung cancer, or your household has a low to moderate income (the BC income limit is on their page).
- You have a long-term test of at least 90 days, using a C-NRPP listed device, showing more than 200 Bq/m³.
- You have a quote from a C-NRPP certified mitigation professional. We can provide one.
- You apply before the work is done. Funding is limited, so apply early.
At the time of writing (October 2026), there is no BC, regional or city grant for radon mitigation. The main help is the Canadian Lung Association's Lungs Matter grant.
What Doesn't Apply
- The medical expense tax credit. The Canada Revenue Agency lists radon testing and mitigation as expenses you cannot claim.
- BC's Seniors' Home Renovation Tax Credit. Radon work is not on its list.
Anything we missed? Let us know. For everything else, see grants and other help paying for radon mitigation.
Radon and the BC Building Code
What a Newer Home Has, and What It Doesn't
What a rough-in is. A layer of clean gravel under the floor that lets soil gas move, a sealed barrier between the ground and the house, and a radon pipe from the gravel to the outside, with room to add a fan later (before December 2014, the pipe was capped inside). It is a head start for a radon system, not a radon system.
The dates go by when the builder applied to build, not when the home was finished, so a house finished a year after a change may have been built to the older code. Each of our town pages shows the dates for that town.
The code has never required a fan, so a newer home still needs a test. BC's code also stops once you move in: it never requires a test (B24-03-R). If your home has a builder's rough-in or passive radon pipe, we always test it before using it, because a pipe that is clogged or crushed below the slab may not work. When it passes the pressure field test, it can be activated as part of your system.
Not every rough-in is built well. When the BC Lung Foundation looked at 89 newer Interior homes in 2022, it found significant flaws in the vast majority, and about 1 in 4 had no room left to add a fan.
For existing homes, the national standard is CAN/CGSB-149.12-2024, Radon Mitigation Options for Existing Buildings. We install every system to it.
December 15, 2006
Basement floors and walls must keep out soil gas, with a plastic soil gas barrier under the slab or, instead, a capped pipe. No radon areas yet (BC Building Code 2006, section 9.13).
December 20, 2012
A sealed air barrier against soil gas everywhere in BC. In the places the code lists as radon areas, a radon rough-in too: clean gravel under the floor and a pipe through the slab, capped inside the house (bulletin B12-02; the list of places).
December 19, 2014
In the listed places, the rough-in pipe must now run through the house and end outside, through the roof or a wall. Still no fan required (bulletin B14-07).
December 10, 2018
The list of places is updated, with Abbotsford, Duncan, Hope, Lillooet, Sechelt and Whistler added, and local governments can add their own (bulletin B18-04).
March 8, 2024
The rough-in is required in every new home in BC, with a 100 mm Schedule 40 pipe to the outside, labelled along its length, and room left for a fan. Still no fan required (bulletin B24-03-R).
Radon in Child Care and Schools in BC
Child Care in the Interior Health Region
Since May 2017, every licensed child care provider in the Interior Health region has had to test for radon, including new applicants and before and after school programs. Interior Health asks for a long-term test of 91 days with lab analysis, and its licensing officers check that the test was done at inspection (Interior Health; letter to child care providers, 2023).
It is an Interior Health rule, not a BC-wide law. We found no other BC health authority that requires it, though Fraser Health has guidance for child care facilities.
Schools
Interior Health ran a radon testing project for schools from 2022 to 2024, and 293 of the 407 school sites in its region were tested (Interior Health, 2025). Some school districts have tested on their own too; our town pages list what we know locally. If you're not sure about your child's school, ask the school.
Schools and other public buildings are tested to a separate Health Canada guide for public buildings, not the one for homes.
Radon When Buying or Selling a Home in BC
The seller's form asks. Since April 2020, BC's standard Property Disclosure Statement has asked whether the home was tested for radon, the latest level and date, and whether there is a radon system (BC Real Estate Association). The form is voluntary, and owners don't have to test.
Agents must disclose a known high result. If an agent learns that a home tested over 200 Bq/m³, the BC Financial Services Authority says it is a material latent defect they must disclose to buyers or tenants. Once a home has been mitigated, the old level no longer has to be disclosed, but questions about it must be answered truthfully or not at all (BCFSA radon guidelines).
Buying without a test? A proper test takes at least 91 days, longer than most offers stay open. BCFSA notes that buyers can propose a holdback, so a long-term test can run in your first heating season after you move in (CARST real estate guideline).
Selling in the Spring?
Our advice: test the winter before you list. A long-term result you can show buyers answers the question on the form, and if it is high, the work can be done, and the result after it shown, before you sell.
Radon in Stratas, Townhomes and Rentals
Stratas and Townhomes
You can test your own unit, and if it reads over 200 Bq/m³, take the result to your strata council. Work on common property needs the council's approval, and it is the council that brings in a mitigation professional. A townhome over a shared garage may need the garage vented too (BC Financial Services Authority).
An outside pipe usually needs the strata's written approval, and your strata's own bylaws set the rules (Strata Property Act, standard bylaws).
Renters
BC's Residential Tenancy Act doesn't mention radon, but a landlord has to keep a rental up to the health, safety and housing standards the law requires (section 32). A property manager who knows of a result over 200 Bq/m³ has to disclose it to tenants (BCFSA). Renters can test too: a long-term kit sits quietly in a room for three months.
Energy Retrofits and Radon
Making a home tighter is a good thing, but it can change your radon level. Health Canada says energy retrofits can reduce air exchange and may increase radon levels, and recommends testing again the heating season after new windows, insulation or sealing (Radon and energy retrofits). The same goes for a new furnace or any change to how your home is ventilated.
Planning a retrofit? Test before and after. If you already have a radon system, we can check how the new work changes the pressure in your home.
Radon in BC and Alberta: What's Different
We Work in Both Provinces
The guideline is the same. Most of the differences are in the building code, child care and the seller's form.
- Radon guideline: BC: 200 Bq/m³ (Health Canada). Alberta: 200 Bq/m³ (Health Canada).
- Radon rough-in in new homes: BC: Listed places from December 2012, with the pipe to the outside from December 2014; every new home since March 2024. Alberta: Soil gas protection in every new home under the Alberta Building Code 2014, mandatory from November 1, 2015.
- Fan required by code: BC: No. Alberta: No.
- Fan outdoors allowed by the standard: BC: In the milder parts of southern BC. Alberta: Nowhere: no place in Alberta is mild enough.
- Child care: BC: Must test in the Interior Health region, since 2017. Alberta: No requirement in force. A 2017 law that would have required it was passed but never brought into force.
- Seller's disclosure form: BC: Asks about radon, since April 2020 (voluntary form). Alberta: No standard form that asks about radon.
- Agent must disclose a known result over 200 Bq/m³: BC: Yes. Alberta: Yes.
- Radon in the workplace: BC: No radon-specific rule. Alberta: A 2026 Alberta OHS bulletin names radon and the 200 guideline.
- New-home warranty: BC: The warranty law doesn't mention radon. Alberta: One major warranty provider, the Alberta New Home Warranty Program, says radon is not covered.
Sources: BC Building Code bulletins B12-02, B14-07 and B24-03-R; Alberta Municipal Affairs (Alberta Building Code 2014); CAN/CGSB-149.12-2024 and the National Building Code 2020, Appendix C; Interior Health; Alberta's Radon Awareness and Testing Act (2017); BCREA; BCFSA; the Real Estate Council of Alberta; Alberta OHS bulletin RAD007 (April 2026); Alberta New Home Warranty Program.
Radon Questions
Is There a Safe Radon Level?
No level of radon is considered risk free. Health Canada's guideline is 200 Bq/m³: above it, lower your level within a year, and sooner the higher it is. Health Canada also says 200 is not a recommended stopping point if your home can reasonably go lower. See What Your Radon Level Means.
Is Radon Only a Problem in the Interior?
No. The Interior and the north have the highest levels, but homes over the guideline turn up across BC. Health Canada recommends testing every home, wherever it is, whatever type of home it is, and even if it already has a radon system.
My Neighbour's Home Tested Low. Do I Still Need to Test?
Yes. Radon can be very different from one house to the next, even on the same street, because of the ground under each house and how it was built. Your own long-term test is the only way to know.
I Got a High Reading on a Library Radon Detector. What Should I Do?
Call us with the number and how many days it ran. Depending on both, it can be enough to go ahead, or we may suggest a long-term test first. If it read low, follow it with a long-term test of at least three months, because a short test cannot rule radon out.
My New Home Has a Radon Rough-In. Am I Covered?
Not necessarily. The code requires the pipe but has never required a fan, so test the house first. If the result is high, we test the pipe before using it.
What Happens on Install Day?
Most installs take one day. The work happens in the basement or crawlspace, so we don't need the run of the whole house. We drill with Hilti dust extractors fitted with HEPA filters, made for drilling and coring concrete, not shop vacs, so the dust is caught as we go. There is some noise while we drill through the concrete, but it comes in short bursts, and most people upstairs carry on with their day.
Why Doesn't RadonCare Offer Free Radon Tests?
Because we want the test done right. A proper test runs for at least three months in the lowest lived-in level of your home, and we only recommend a system when a test shows your home needs one. For a free first look, borrow a detector from your library, then follow up with a long-term test.
Are There Grants for Radon Mitigation in BC?
The main one is the Canadian Lung Association's Lungs Matter grant, for people diagnosed with lung cancer or households with a low to moderate income. You have to apply before the work is done. At the time of writing (October 2026), there is no BC, regional or city grant; our help paying page has the details. Anything we missed? Let us know.
How Soon Does Radon Drop After a System Goes In?
Usually within a day or two of the fan starting. See Radon Levels After Mitigation.
Can I Claim Radon Mitigation on My Taxes?
Not as a medical expense. The Canada Revenue Agency lists radon testing and mitigation as expenses you cannot claim as a medical expense, and there is no BC tax credit for it.
Areas We Serve in BC
Our BC crews work across the Okanagan, the Shuswap, the Thompson and the Columbia Valley, and each of these pages has the local radon numbers, our results there, the code dates and where to borrow a detector:
We also work in Lake Country, Coldstream, Armstrong, Enderby, Sicamous, Chase, Sorrento, Blind Bay, Peachland, Barriere and Golden, and across Alberta. Not sure about your town? Call or text 236‑300‑7223.
Radon in the BC News
The Tyee, January 9, 2026Homeowners Left on Their Own to Deal with Deadly GasThe Tyee interviewed one of RadonCare’s founders for this story on radon in BC.
BC Cancer, November 16, 2023Radon in home can increase risk of lung cancer
Get a Free Quote or Ask a Question
Fill out the form and a radon expert will get in touch to answer your questions. Prefer to talk? Call or text 236‑300‑7223.
About RadonCare
We've lowered the radon in every building we've ever worked on: more than 3,000 homes across Alberta and British Columbia, plus schools, apartment buildings and government buildings. We started out in heating and ventilation, so our team of C-NRPP certified professionals designs every system from how air actually moves through your house, and we aim for the lowest level your home can reasonably reach, not just under the guideline. From your first test to a system built for your home, the results are guaranteed. RadonCare is a five-time Consumer Choice Award winner, and we're involved in Canada's radon industry, with seats on the CARST board of directors and the C-NRPP advisory board.
Updated October 2026