HarrisburgOffice.com, a partnership between Tom Posavec and Roy Brenner, is the Leading Provider of Office Brokerage Services in the Harrisburg Region.The group specializes in expert Real Estate Services for owners and users of office and business park properties in the MidState. Our ability to provide corporate clients with fast, accurate market knowledge of the Harrisburg Marketplace has made us the preferred brokerage of many national real estate firms.