Robert Von Ancken has been named chairman of Landauer Appraisal Services, a New York-based division of Newmark Grubb Knight Frank.
Von Ancken was previously executive managing director of Grubb & Ellis New York, where he appraised more than 10,000 properties in and around New York City, including the Empire State Building, the Chrysler Building, Rockefeller Center, the World Trade Center and Columbia University.
