Chicago’s central business district office market closed out 2017 with more than 700,000 square feet of positive absorption despite a 19 percent jump in direct vacancy.This discrepancy is largely attributable to new building deliveries and vacating shadow space.For the city’s large law firms, a similar trend is taking place. Looking to maximize efficiency and attract new talent with appealing and innovative layouts and designs, many firms are opting to consolidate space, according to a recent report from CBRE …