Sec. 45. (a) If after a public hearing the commission approves in form and substance, by the vote of:
(1) at least six (6) members; or
(2) for a certificate of appropriateness, a majority of the members present;
the agreement as filed, the commission shall enter a final order expressing the commission's approval of the zoning variance or issuance of the certificate of appropriateness as sought by the petitioner.
(b) The commission shall, at the petitioner's expense, immediately file the agreement with the Marion County recorder.