Health Canada (opens in a new tab) says to test before you sell or after you buy, not during the sale. A long-term test takes at least 91 days.
We can test your home before you list or after you move in, check a radon system that's already there, and quote a fix from a kit or library result. If you want radon written into an offer, your realtor or lawyer can help with that.
At least 91 days
How long a long-term test runs, the one to act on
200 Bq/m³
Health Canada (opens in a new tab)'s guideline
$300 plus HST
Our long-term test by mail, shipping both ways included
From $300 plus HST
Checking or retesting a radon system for a buyer
Health Canada "doesn't recommend conducting a radon test during a real estate transaction." It says to test before you sell or after you buy.
A long-term test runs at least 91 days. Health Canada says to decide on a fix from a test that long.
Health Canada notes that some real estate professionals use a hold-back, so a test can run after the sale and the money can pay for a fix if the level's high. Ask your realtor or lawyer whether that fits your deal.
CARST (opens in a new tab), the radon professionals' association, sets out a short screening method for use during a sale. We don't run short-term tests during a sale. Like Health Canada, we recommend a long-term test of at least 91 days.
Wondering how common radon is around here? See radon in Windsor-Essex.
Health Canada says before you sell is a good time to test. Starting early gives you time for the full 91 days, and a number you can show buyers.
If it's high, fixing it before you list means you can show buyers the lower number. See radon mitigation systems and what a high result means.
What you have to tell buyers about a radon result is a question for your realtor or lawyer.
After you buy. Health Canada says that's a good time to test, once you've moved in. Run a long-term test, at least 91 days.
If the long-term test after you move in comes back above 200 Bq/m³, see got a high radon result?
Our long-term test comes by mail and is $300 plus HST, with shipping both ways included. How our test by mail works.
Ask the seller for the last long-term result and when the system went in. Health Canada says a home with a fan system should be tested every 5 years.
Look for the pipe, the fan and a gauge on the pipe (a U-tube manometer). The gauge on the pipe shows the suction the fan makes, not your radon level. Only a test shows that. Check it now and then. If it moves out of its normal range, call a C-NRPP (opens in a new tab) mitigation professional.
We inspect or retest an existing system for a buyer, from $300 plus HST. That includes systems another installer put in.
New homes covers radon rough-ins and Tarion's radon warranty. (source) (opens in a new tab)
Bring the number to us. We'll quote a fix from it, with no retest needed for the quote. Then you know what a fix would involve and what it would cost. Our prices page has the ranges.
If it was a short test, Health Canada still says to base the decision on a long-term one.
What you can do in the deal is a question for your realtor or lawyer. Health Canada mentions hold-backs as one way realtors handle it.
We work directly with homeowners and buyers. Tell us when you plan to list or move in, and we'll tell you what fits. We answer every call and form message ourselves, within 24 hours.
Or call 519-991-8180
Monday to Friday, 9am to 5pm. Saturday by appointment.