Both deals are for 15 years, according to the John Buck Co. While financial terms were not disclosed, asking net lease rates at the one-million-sf building range from $26.50 to $30 per sf, which would put the total value of Lord Bissell & Brook's deal in the $80-million neighborhood.

Lord Bissell & Brook creates a looming vacancy at the Harris Bank Building at 115 S. LaSalle St. in the summer of 2005, when 111 S. Wacker Dr. is scheduled to be completed. Meanwhile, Grippo & Elden will leave AT&T Corporate Center at 227 W. Monroe St.

Construction of 111 S. Wacker Dr. began after Deloitte & Touche was signed to a 424,192-sf deal.

"The speed at which the UBS Tower was leased up strengthens our belief that there is continued demand for A-plus buildings in this superior Wacker Drive location," says John Buck Co. principal John O'Donnell.

John Buck Co. principal Drew Neiman and leasing representative Kevin Morgan handled negotiations for the opportunity fund. US Equities Realty president and COO Nancy A. Pacher represented Lord Bissell & Brook, along with Ron Friedman and John Garbossa. CB Richard Ellis SVP Lisa Konieczka and VP Cal Wessman represented Grippo & Elden.