The suburbs have already seen an exodus, of sorts, to downtown Chicago, such as United Airlines and The Warranty Group, says Andrew Davidson, EVP and managing director of corporate services for MB Real Estate. The mortgage crisis and economy have caused the Chicagoland markets to worsen and, with more mortgage and lending companies based in the suburbs than downtown, the suburban submarkets have fared the crisis much worse. The suburban submarkets saw nearly 1.2 million sf of negative absorption for the first quarter of the year, compared to 450,058 sf of positive absorption in the fourth quarter of 2007, according to MB Real Estate's market report. The Northwest submarket, where quite a few of the mortgage and lending companies were based, was the hardest hit with the highest increase in vacancy for the first quarter of the year, Davidson says. "I think a lot is going to depend on the economy and where it is going," he says.

Sublease opportunities are expected to increase in the next 18 to 24 months. Walgreens is subleasing the 321,320-sf Two Overlook Point in Lincolnshire, IL from human resources consulting firm Hewitt Associates Inc., Davidson says. Hewitt is also subleasing 290,000 sf in another building. "Another reason the suburbs are suffering more than downtown is that they have a larger call center component that is subject to outsourcing overseas, which is the case with Hewitt," Davidson says. About two blocks of sublease space with a total of more than 450,000 sf will roll over before July, according to MB's report.

Annual average Class A asking lease rates have increased 9% each year since 2005, according to a market report from UGL Equis. However, rates are expected to decrease this year.