General Growth Properties, a Chicago-based publicly traded REIT, sold the 370,000-square-foot Westlake Center Office Tower located at 1601 5th Avenue in Seattle, WA to Pension Fund TIAA-CREF, for $119.4 million, or about $323 per square foot. Originally constructed in 1988, the 25-story office building was structurally engineered by KPFF, an international provider of structural and civil engineering services. KPFF is headquartered within the building. The Westlake Center Office Tower was fully renovated in 1992. CBRE’s team of Jesse Ottele and Scotta Ashcraft will be responsible for the leasing of the building for the new owners.