"Nearly a million sf of space has come off the market," JohnDerham, senior managing director of Cushman & Wakefield ofPennsylvania, tells GlobeSt.com. "Comcast Center will open morethan 90% leased, and Two Liberty took 328,000 sf off the market byconverting its top floors to residential condos. To us, it'sabsorption."

When Malvern-based Liberty Property Trust broke ground for thenearly 1.3-million-sf Comcast Center, the locally based cable TVgiant had committed to less than half of the space. It has nowcommitted to 87% of the building and also drawn new tenants, whichtake overall preleasing to above 91%. It will open by year'send.

"We also got some growth," Derham adds, pointing to theexpansion of some law firms and a few new businesses, which Derhamsuggests will compensate for Lincoln Financial's announced decisionto relocate significant staff from Centre Square to the suburbs. "Ayear ago, large tenants had a lot of options. Now, there arevirtually no large spaces left," he says.