Suggestions made previously, maybe worth repeating:

1. Have Ottawa demand that Quebec END its investor immigrant program, a program that brings in the better part of ten thousand new super-rich immigrants a year, who then go on to buy houses in Toronto and Vancouver. 

2. Have Ottawa BAN the purchase of detached houses in Canada by foreign students on student visas. There is NO compelling reason for allowing college and university students from overseas to function as proxy house buyers for their millionaire parents in end-runs around our foreign purchase laws. 

3. Have Ottawa pick Vancouver and Toronto as test cities for a new program where, unless you work locally (or have worked in Canada for ten years), your property tax rate is 20 percent of house price per year.

4. Have Ottawa immediately TERMINATE its ten-year renewable visa program in order to carve out time to study its impact on real estate in Canada. 

Do NOT shift money into pockets of new buyers, that is gas on a fire.