WASHINGTON, Jan. 16, 2020 /PRNewswire/ -- San Francisco-based real estate firm Hamilton Zanze (HZ) has acquired two apartment communities in Columbia, Maryland, including the Timbers at Long Reach apartments and the Chimneys of Cradlerock. The deal closed on December 31st with seller Aimco. HZ now owns and operates six residential apartment communities in the D.C. metro. "Closing 2019 with this major expansion of our East Coast presence meant a great deal to our team and our investors," said David Nelson, managing director of acquisitions for Hamilton Zanze.