The 400 unit Avana Westchase apartment community sold for $109 million. The transaction comes to $272,000 per unit. Avana was built in 2002 and consists of 28 buildings on 24 acres. The seller was Greystar and the buyer was Ivanhoe Cambridge. Greystar is the biggest multifamily operation in the US managing about 750,000 units. Avana is located at 12201 Lexington Park Dr.