Texas Property Code - PROP § 53.055. Notice of Filed Affidavit

(a) A person who files an affidavit must send a copy of the affidavit to the owner or reputed owner at the owner's last known business or residence address not later than the fifth day after the date the affidavit is filed with the county clerk.

(b) If the person is not an original contractor, the person must also send a copy of the affidavit to the original contractor at the original contractor's last known business or residence address within the same period.