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 to such hearing, whether located within or without the Borough. Such notice shall be given by: 1) serving a copy thereof on the owner as shown on said tax duplicate, or his agent in charge of the property; or 2) mailing a copy thereof by certified mail to the property owner at his address, as shown on the tax duplicate. A return receipt is not required. Notice to a partnership owner may be made by service upon any partner. Notice to a corporate owner may be made by service upon its president, vice president, secretary or other person authorized by appointment or by law to accept service on behalf of the corporation.