Council on Tall Buildings and Urban Habitat
Jan Klerks Completes Recent CTBUH Staff Expansion
Ex-director of the Dutch Council on Tall Buildings, Jan Klerks, joined the CTBUH in January as the new Manager of Research & Communications, completing the recent expansion of staff at the expanded Council Headquarters in Chicago. Jan’s appointment compliments the recent staff additions of Katharina Holzapfel as Development Coordinator and Steven Henry as Publications Coordinator. Housed in the newly CTBUH Headquarters office at the Illinois Institute of Technology alongside Executive Director Antony Wood, the staff compliment is now up to a dozen people, including long-time Manager of Operations Geri Kery and seven members of part-time / contributory staff. The CTBUH is now in an excellent position to continue its existing initiatives for the benefit of its members, and push new projects and ambitions in order to accomplish its tasks and goals.
New CTBUH Headquarters Office, located within the Illinois Institute of Technology, Chicago, USA
Jan Klerks
Research and Communications Manager


  New Research and Communications Manager Jan Klerks has a proven track record in both tall buildings and not-for-profit organizations. A Dutchman by nationality,  Jan was executive director of the Dutch Council on Tall Buildings for eight years. The Dutch CTBUH is one of the regional sister organizations based in Rotterdam, the Netherlands. In this position he organized conferences, published newsletters, conducted study projects on high-rise zoning policy and high-rise living, supported high-rise related activities and maintained the professional network in the Netherlands. He also chaired the Rotterdam Skyscraper Foundation, through which local publications and activities for the general public are organized. He initiated the first Rotterdam Skyscraper Festival in 2007 and is the founder and leader of, the world's largest online forum on skyscrapers and urban related topics. His first projects for the CTBUH include the preparation of high-rise research funding proposals and implementing an information database on tall buildings for the Council’s website.

Katharina Holzapfel
Development Coordinator
Katharina Holzapfel


CTBUH Development coordinator Katharina Holzapfel moved from her home town of Munich, Germany to Chicago in 2005 when she received the Illinois Institute of Technology Graduate Tuition Scholarship. After her graduation with a First Class architectural masters degree she became active in the CTBUH from spring 2007, working on publications for the CTBUH 2007 Awards Dinner, the CTBUH Journal, the CTBUH Info Archive initiative and Membership support. She was also the creative force behind all the publications produced for the CTBUH 8th World Congress in Dubai, such as the 875-page congress proceedings, the pocket guide, and the post congress review. Since October of 2008, after working as an architect in Munich for one year, Katharina joined the full-time team of the Council. Currently she is working on the CTBUH Journal Issue I/2009, maintaining the CTBUH website, newsletter, updating the CTBUH membership database, assisting with new membership solicitations and driving forward other development initiatives.

Steven Henry
Publications Coordinator
Californian-born Steven Henry received his degree in architecture in May 2008 from the College of Architecture of the Illinois Institute of Technology. In his final years he studied new programmatic uses for high-rise buildings as well as research on how to incorporate sustainable features as an inherent part of the design. The focus of his design research project was on the Chicago Water Tower, which utilizes on-site natural water recycling and façade rainwater capture. Involved with the CTBUH since January 2008, he took on the job as Publications Coordinator in October of that same year. As such, he has designed and produced the Council’s inaugural awards book titled, “Best Tall Buildings 2008: CTBUH International Awards Winning Projects.” Among other tasks, he continues to coordinate the council’s book publications, including the Info Archives and upcoming publications such as the expected first product of the CTBUH Sustainability working group: “The CTBUH Guide to Sustainability for Tall Buildings in Urban Environments”, “New Paradigms in High Rise Design”, and the “2009 CTBUH Awards Book”.