Before the start of 2022, lien waiver forms had to be notarized to make it official. However, the latest updates to the Texas Lien Laws effective on January 1st, 2022 removed this requirement and lien waivers do not need to be notarized anymore.
To remove or clear a Lien on Texas property, the person or entity claiming the Lien needs to sign a document releasing the Lien. The document is usually called a Release of Lien, Lien Release, or a Deed of Reconveyance.