If you have a trust deed securing a loan on a given piece of property, you already have a lien on the property and there really is no need for you to submit a claim to the estate as a creditor since it presumably is of record due to the trust deed assuming it is recorded.If payments have not been made on the loan where real property is security for the loan via a trust deed, I would simply contact a real estate attorney and serve a notice of default of the loan secured by the trust deed on the estate's representative.Your rights concerning the loan lie with the real property which is security for the loan as mentioned in the trust deed that you have written about.