In addition to the authority granted by this Division, the County Executive is directed to: Designate the agency to implement the Lotsteading Program and utilize the assistance and resources of relevant County agencies in order to effect implementation and administration of the Lotsteading Program; Advertise the prospective sale as required by Article 25A, Section 5(b) of the Annotated Code of Maryland, prior to final agreement between the applicant and County respecting the building site.