The good news in all of this is that the government and the mortgage industry are working together preventing any unnecessary foreclosures.

The partner's equity would remain in the property preventing the need for a down payment?

You could always try to extend closing, but the seller may refuse to sign an extension amendment.You could always suggest closing and implementing a rent back or occupancy agreement as it’s called here, although I suspect she won’t want that and prefers to get a higher price if she received those other offers.  

I don't see any line of logic (or regulation on a national level) that would prevent this. 

Those buildings can be rock solid, but structural oddities about old buildings prevent you from doing as much wall replacement/removal. 

(Which he implemented like RIGHT away which was amazing.

It keeps the local residential areas to the locals (and keeps them happy), and it prevents craziness like 10 people staying in a one-bedroom condo, which never goes well for the neighbors. 

Hello,When selling a piece of land can a deed restriciton be used to prevent the buyer from developing a certain type of asset on the land (commercial, multifamily, etc)? 

Hi Rebecca,There are plumber installable devices known as sewer backflow prevention devices.You might want to talk to a plumber and see if installing one (or more) of these might help keep this from happening in the future.Here is a good demonstration of large one for the main discharge line: https://www.youtube.com/watch?

But it truly depends on your buying strategy because an LLC if not quit claimed when buying/refinancing would prevent you from getting the lowest interest rates and down payment options when buying.