Chicago-based HSA Commercial Real Estate was named one of Chicago’s Top Leasing Firms for the fourth consecutive year in the Power Broker Awards by the CoStar Group. The CoStar Power Brokers Awards are given annually to companies that demonstrate the highest levels of leasing transaction volume in a specific geographic market, recognizing the most active firms and dealmakers in commercial real estate.

HSA Commercial had a particularly busy year in 2011, completing over 100 lease transactions totaling more than 1.6 million square feet. Since the firm’s inception in 1981, HSA Commercial has represented owners, investors and tenants in more than 10,000 transactions in 43 states. HSA Commercial provides brokerage services in the office, industrial, retail and medical office sectors, and HSA’s brokerage divisions have consistently ranked among the most active in the Chicago metropolitan area.

CoStar Group (Nasdaq: CSGP) is commercial real estate’s leading provider of information and analytic services. Founded in 1987, CoStar conducts expansive, ongoing research to produce and maintain the largest and most comprehensive database of commercial real estate information.