Upon the effective date of the ordinance codified in this article, the director of building inspections shall compile a list of signs in existence on the effective date of the ordinance codified in this article which are required to be removed or altered so as to comply with the provisions of Section 15.148.790 and this chapter. The list shall include all signs other than the signs described in Section 15.148.790(A). Upon the completion of such list the director of building inspections shall notify by mail the owners of property upon which such signs are located that compliance with this article is required within the time limit specified. For the purpose of notification, the last known name and address of the owner or owners of the property involved shall be used as shown on the last equalized assessment roll. Notification of the owners of the property involved shall be deemed to be notification of the owners of the signs involved, unless the name and address of the owner of the sign appears thereon, in which event notice will be sent to such sign owner. Notwithstanding any provision to the contrary herein, failure to notify the owner of the property or sign or the failure of such owner to receive such notice shall not relieve such owner of the duty to comply with the provisions of Section 15.148.790 or of this chapter. (Prior code § 3.10.182)