Whenever a public hearing is required by this chapter, notice of such public hearing shall be given by the City pursuant to Government Code Section 66451.3, including publication at least 10 days prior to the hearing in a newspaper of general circulation; mailing at least 10 days prior to the hearing of the notice to the owner of the subject real property; mailing of the notice at least 10 days prior to the hearing to each local agency expected to provide water, sewage, streets, roads, schools or other essential facilities or services to the project, whose ability to provide those facilities and services may be significantly altered; and mailing of the notice at least 10 days prior to the hearing to all owners of real property as shown on the latest equalized assessment roll within 300 feet of the real property that is the subject of the hearing, except that notice shall be provided to owners within 600 feet of the real property for subdivisions of five or more parcels. The Planning Director may give such additional notice as he or she deems advisable. Substantial compliance with these provisions for notice shall be sufficient, and a technical failure to comply shall not affect the validity of any action taken according to the procedures in this chapter.