The 20-storey “The National” building was acquired from Blue Star Properties. : Commerz Real has added a 111-year old Chicago office building worth €171.5m to its hausInvest open-ended real estate fund. The German fund manager said it has acquired the 20-storey “The National” building from Blue Star Properties. The building, built in 1907 as the “Edison Building”, is located at 125 S Clark Street and offers around 54,000sqm of rental space. Henning Koch, the global head of transactions at Commerz Real, said: “The National offers everything that investors nowadays expect of a hausInvest investment.