Reckson Associates Realty Corp. Scott Rechler has been promoted from president and COO to president and co-CEO of this Melville, N.Y.-based commercial real estate firm. Rechler will share the co-CEO position with Donald Rechler, who is also chairman. The company has also promoted Mitchell Rechler and Gregg Rechler to co-COOs. Prior to their promotions, both were executive vice presidents. Jason Barnett has been promoted from general counsel and senior vice president to executive vice president.

General Growth Properties John Bucksbaum has been promoted from executive vice president to CEO of this Chicago-based shopping center owner and development company. He succeeds his father, Matthew Bucksbaum, who will remain chairman of the board.

Zamias Services Inc. Don Borkland has been promoted from CFO to executive vice president of this Johnstown, Pa.-based commercial real estate firm. His responsibilities include asset management, finance, property management and marketing. Colliers Cauble & Co.

Caldwell Zimmerman has joined this Atlanta-based commercial real estate firm as president of its retail and land divisions. He will be responsible for land acquisition and for growing the company's retail division. Prior to joining Colliers Cauble, Zimmerman has held positions at CB Richard Ellis, Portman Barry and Ackerman & Co. Most recently, Zimmerman served as president of the brokerage division for Atlanta-based Ackerman & Co.

Golub & Co. Lee Golub has been promoted from senior vice president to executive vice president of this Chicago-based real estate developer. His duties include office and residential development and acquisitions for the company's U.S. division. RTKL Associates Inc.

David C. Hudson has been promoted from associate to president of this Baltimore-based architecture, engineering and planning firm. He succeeds Harold L. Adams who will continue as chairman and CEO. Hudson has been with RTKL since 1977.

Jones Lang LaSalle John G. Wallerius has been promoted to the newly created position of global CIO of this Chicago-based commercial real estate firm. Wallerius' new responsibilities include development and implementation of the company's global information technology infrastructure and systems. Previously, he was president of facility services for Compass Management and Leasing.

Lee & Associates Jedd Zaun has joined this Tustin, Calif.-based commercial real estate brokerage firm as senior vice president and member of its board of directors. Previously, Zaun was senior marketing consultant for Northbrook, Ill.-based Grubb & Ellis.

JDN Realty Corp. Philip G. Satre has been named to the board of directors of this Atlanta-based shopping center management firm. Satre is chairman and CEO of Memphis, Tenn.-based Harrah's Entertainment Inc. Previously, he was president and CEO of Memphis, Tenn.-based Promus Cos. Inc., which is now part of Harrah's Entertainment.

Winston Hotels Inc. Joseph V. Green has been promoted from executive vice president of acquisitions and finance to CFO of this Raleigh, N.C.-based REIT. Also, Brent V. West was promoted to vice president of finance and controller. Previously, West was with Coastal Physician Group as corporate controller.

Summit Properties Inc. James M. Allwin has been elected to the board of directors of this Charlotte, N.C.-based apartment development and management company. Allwin is advisory director of Morgan Stanley Dean Witter and previously was president of the institutional investment management businesses of Summit Properties.

Newmark & Co. Real Estate Inc. Jeffery A. Lichtenberg has been appointed vice chairman of this New York-based commercial real estate firm. His duties will include tenant representation and landlord agency assignments. Previously, he served as executive managing director of New York-based Insignia/ESG. o

Mack-Cali Realty Corp. Nathan Gantcher and Roy J. Zuckerberg have been elected to the board of directors of this Cranford, N.J.-based REIT. Gantcher is vice-chairman of New York-based CIBC Oppenheimer Corp. Zuckerberg is chairman of the executive committee of Goldman Sachs Bank in Zurich, and is chairman of the Securities Industry Association.