Originally posted by @Account Closed:
I think Sam is right about terminating the leases. Details in each state will vary, but generally speaking if a lease is subordinate to a mortgage and the lender forecloses, then the lease would terminate at the lender's option. It is not unlike a junior mortgage in that regard. This is one reason why the subordination language in the estoppel is a little concerning. Typically, a tenant would agree to subordinate the lease to the mortgage and attorn to the lender as new landlord in exchange for the lender's agreement not to disturb the tenant's rights under the lease. These are each of the 3 main components of the SNDA, which will then carve out certain items that the new lender/landlord is not responsible for (primarily any prior landlord defaults). The NDA part was absent in the language in this estoppel.
Since I'm pontificating, I'll point out that it's a totally separate question, and even more state specific, whether a tenant is already subordinate to the mortgage. In some states, absent an agreement otherwise, the first person/entity with rights to the property is superior to any rights acquired by other parties after the fact. So, if a tenant is in place and a new mortgage is put on the property, absent an agreement otherwise, the tenant is superior. This is not always true and will depend heavily on what's in the written lease agreement (a tenant may agree up front in the lease to subordinate to all future mortgage) and will depend on state-specific lien priority law. Some states look to see which document is recorded in the land records first, others pay more attention to which party had notice of the other. Several states are a hard-to-decipher mix of the two.
Hopefully this is more helpful than confusing.