After signing a lease, the landlord is legally bound to deliver the rental for the entire lease term. In legalese, this duty is known as the “covenant of quiet enjoyment.” A landlord who defaults on a mortgage, which sets in motion the loss of the lease, violates this covenant, and the tenant can sue for the damages it causes…
The tenant can sue for moving and apartment-searching costs, application fees, and the difference, if any, between the new rent for a comparable rental and the rent under the old lease.