Probably a mortgage, but not enough information to be sure. Schedule an appointment with an attorney to assist you.
If this answer is helpful, then please mark the helpful button. If this is the best answer, then please indicate it. Thanks. For further information you should see an attorney and discuss the matter completely. If you are in the New York City area, then you can reach me during normal business hours at 718 329 9500 or www.mynewyorkcitylawyer.com.
We have always joked that the SBA makes you give them your "first born child!" Seriously, the contracts they stick the small business owner with are unbelievable, requiring any & every receivable, all real & personal property now owned or hereafter acquired... Hope this perspective helps!