Calamos Real Estate was established in 2005 and has grown around CityGate Centre in the Chicago area. Calamos Real Estate provides commercial real estate brokerage, property management, engineering, development, construction management, marketing, and administrative services, with work spanning office, retail, and special-use properties. Calamos Real Estate also handles tenant and owner representation and maintains a broad presence across DuPage County and the greater Chicago area through a mix of leased space and land available for development.