Notice shall be given to the owners of all real property, as shown on the current tax duplicate or duplicates, located within 200 feet in all directions of the property which is the subject of such hearing, provided that this requirement shall be deemed satisfied by notice to a condominium association, in the case of any unit owner whose unit has a unit above or below it, or a horizontal property regime, in the case of a co-owner whose apartment has an apartment above or below it. Such notice shall be given by either serving a copy thereof on the owner as shown on the said current tax duplicate or his agent in charge of the property or by mailing a copy thereof by certified mail to the property owner at his address as shown on the said current tax duplicate. Notice to a corporate owner may be made by service upon its president, a vice president, secretary or other person authorized by appointment or by law to accept service on behalf of the corporation.