The appropriate person must sign the document, and that person's signature must be notarized (i.e. , Release, Deed of Trust, Deed, etc.).It should be filed with the County Clerk to create a lien on the borrower's interest in the real property. There are three parties named in a Deed of Trust. Looking to file a mechanics lien in Harris County, TX? Here's all the information you need to file your lien with the Harris County Clerk. Please fill out type of document (i.e. Deed of Trust, Warranty Deed, Lien, Abstract of Judgment, etc.). You'll need a Promissory Note and a Deed of Trust. The borrower will sign both; you'll record the Deed of Trust in Harris County.