Honestly, I think real estate chain of title, mortgages, etc is a perfect use case for blockchain. You've got lots of parties, lots of disparate data, and an onerous outdated process that makes transfer of real property take weeks to months when it could theoretically be "instant".
A city government is not the current decision maker when it comes to title of real property. Title of real property is complex and can be contested in court. There are various types of deeds involved in title and even then, you have to purchase title insurance in case some heir of an old estate comes out of the woodwork to claim title of said property. It's just not that clean cut.
