Salt Lake County Deed of Trust Form. Fill in the blank form formatted to comply with all recording and content requirements.Salt Lake County Certificate of Trust Form. A trust amendment is a legally binding document designed to modify one or more provisions within your living trust. An extension and modification agreement is an addendum added to an existing contract that extends the terms and makes certain changes as outlined within. OF RENTS AND LEASES, SECURITY AGREEMENT AND FIXTURE FILING (the. Check the applicable Rider boxes in the Short Form Deed of Trust. Insert the property description information and the address in the Short Form Deed of Trust. Filed with the Securities and Exchange Commission. The mortgage modification agreement is a legal document between a lender and borrower to change an existing loan's terms.