You would need to speak to the Realtors involved. Is there a sellers temp leased signed stating dates of move out separate from the closing/funding date?
When a property is sold, it typically includes all land and building besides the "home" mentioned on the contract. It is handled by legal description. If the building your living in is on this property, it was likely sold along with everything else. Would recommend reaching out to a real estate attorney if you need legal advice.
Bernstein Realty, Inc.