Does Anyone Know The Laws And Rights For Tenants Renting A House? Not Using A Real Estate.

I will be renting a private home [beginning in august]. The landlord was left the house after her uncle past and now she finds that he owed backed taxes. I'm a little hesitant now because I'm afraid that if the bank wants the house I don't want to end up on the street's. Any advise I live in Bergen county, nj. If this happen what happens with the tenants and do we have the right to ask for rent back.