Ulrich Jacke (FRICS) was a member of the management board and shareholder of Dr. Lübke & Kelber GmbH and jointly managed the company from 1999 until the end of his professional career in 2019. In 2002 he took over the company together with a partner in a management buy-out. Since 1994 he has been a member of the RICS professional association, where he was chair of the board from 2008-2009.