Enact a Land Value Tax. In a squeezed market like Vancouver most of the value in houses is the plot of land underneath them, not the "bricks & mortar". By taxing the value of the land rather than the property on top of it you won't penalize people for renovating or knocking down an old building and replacing it with a newer one. Hopefully the tax is high enough to put off speculators and bring prices to a more reasonable level (because massive swings in land value of 20% per year will increase the tax burden).

Just abolish all laws and government and let the market, you know, figure it out.

Trade relations treaties.

Tanks and bombs.

So... the libertarian option is to initiate the use of force?