"Why? Do people keep appropriating your houses?"
The short answer is yes.  Look at all the appropriating that occurred for the new Pickering airport that was never built.  Look at the appropriating taking place under the guise of "proceeds of crime".  A landlord lost his whole building because some tenants were selling drugs, even though the landlord did his best to evict the traffickers.  Look at the Liberals taxing people for not renting or selling their property because Liberal zoning and other policies are destroying the housing market.