Under the laws of all states in this country if you are on a month-to-mnth lease for the unit that was foreclosed upon, your new landlord must give you at least ninety (90) days notice of the termination of your lease. If you have a lease for a term where for example there are five (5) months left on your lease, the new landlord must let you remain until your term is up under 2012 federal law.The one condition is that you cannot be in breach of your lease. You can sue your former landlord for the costs of moving but you do not have to yet from what you have written.