Section 520.81 - Completion certificate(1) Upon completion of the home improvement for which the owner and the home improvement finance seller contracted, the seller shall prepare a certificate which shall be signed by both parties.(2) The form of the certificate shall be prescribed by the commission.s. 1, ch. 69-44; ss. 12, 35, ch. 69-106; s. 3, ch. 76-168; s. 1, ch. 77-457; s. 21, ch. 80-256; s. 2, ch. 81-318; ss. 28, 35, 36, ch. 90-103; s. 4, ch. 91-429; s.630, ch. 2003-261.