I’ve seen some pretty bad stone basements in my days that need to be completely redone in sections with modern block replacement.

When you have an older outdated bathroom, converting it to new and modern will most likely increase your property value (forced appreciation).

I don’t think there is any historical precedent in the modern economies for this, or is there?

They're modern and clean.

Good morning and Happy Thanksgiving,Are you a modern home builder in Washington, DC?

And in CA laws in many counties have changed see  LA county that those lots created before 1920 must meet modern lot standards to be recognized again.In Portland were I work its much easier and its one of the ways to really makes some good dough when the seller does not realize they are sitting on multiple lots that just need and over the counter lot confirmation to revive the existing lot and make it buildable.but in your instance, it sounds like At the county / city level they are not recognizing the underlying lots.. there for the contract cannot be prosecuted and closed as written. 

Florida ....and the population of Canada is a lot more than FL.Vaccination is fortunately not as much of a political football here and people actually understand science so I expect that there will be some very vocal people groaning but most people will welcome the chance to show their love for their elders and neighbours...Canada definitely has a lot of warts (a la native Americans) but being pro life is definitely not one of our warts :-) 

I would find an agent in MN that writes with American Modern

This is not rocket science. 

Went back to school, and now I'm taking my last two classes to earn my bachelor's in Computer Science.