Following the 2012 announcement to shorten the amortization period from 30 to 25 years, there was a 21% housing start reduction in Quebec, an 8% decrease in resale. The impact of that shortening had the result of pricing out 39,000 households in Quebec. They were not necessarily looking to buy, but had they wanted to buy, they could not buy a house at an average price then, given the change in the income requirement to purchase at an average price rate.
On February 1st, 2017. See this statement in context.