Before issuing any civil defense certificate, the certifying authority shall give notice in writing by registered mail to the tax commissioner, and, in case the application relates to a structure, written notice to the county auditor of the county in which such structure is or is to be located, and shall afford to the applicant and the tax commissioner and the county auditor to whom such notice has been given an opportunity for a hearing. On like notice to the applicant and opportunity for hearing the certifying authority, on its own initiative or on complaint by the tax commissioner or the county auditor of the county in which any property to which a civil defense certificate relates is located, shall revoke such civil defense certificate whenever any of the following appears:
Upon the mailing of notice of the action of the certifying authority revoking or modifying a civil defense certificate, as provided in section 5502.44 of the Revised Code, such certificate shall cease to be in force, or shall remain in force only as modified, as the case may require.
R.C. §5502.43