Ky. Rev. Stat. § 376.240
Upon the filing of the statement of lien provided for in subsection (2) of KRS 376.230 in the county clerk's office and the delivery of an attested copy thereof to the public authority making the contract for the improvement of any bridge, public highway or other public property owned by the state or any county or city, and the filing with the public authority of a signed copy of a letter addressed to the contractor or subcontractor at his address given in the contract, with a post office receipt showing that an attested copy of the lien statement has been sent by the lien claimant to the contractor or subcontractor by certified mail, return receipt requested or by registered mail, the claimant shall have a lien superior to any lien subsequently perfected on any unpaid balance due the contractor under the contract of improvement.
KRS 376.240
Amended 1974 Ky. Acts ch. 315, sec. 80, effective6/21/1974. --Recodified 1942 Ky. Acts ch. 208, sec. 1, effective 10/1/1942, from Ky. Stat. sec. 2494.