The largest real estate deal in U.S. history just went bust. Owners (Tishman Speyer) of Stuyvesant Town and Peter Cooper Village couldn't make a $16 million loan payment earlier this month for their $5.4 billion properties. 

It seems their rent collection of roughly 7,000 rent regulated apartments wasn't enough to cover them. They've said they'll be handing the keys over to their creditors.

Landlords missing mortgage payments and renters getting the last laugh, or not? Nobody knows yet what's in store for residents.