^ The city wont expropriate… They will just force a sale.
So every cost the city has occurred as a result of failure to comply notices, and now its demolition, will result in a lien being placed on the property.
If a bank also has an interest in the property the bank will often pay out these unpaid expenses and, in turn, adjust a mortgage. I there is no bank to interject the city will force a sale, and will be pid from those proceeds. The balance, minus any other fees, will go to the land holder.
The city will never expropriate the property outright.
A very similar process to this is used against people who don’t pay their condo fees. There is established legal precedent and I know of no way to escape or prevent the process from occurring once its set into motion. Apart from paying your bills.