WESTPORT, CONN. — The HK Group has orchestrated the $1.2 million sale of a two-building, 5,571-square-foot office property in Westport. The complex is fully leased to a tenant roster that includes luxury homes builder Milton Development, an Allstate Insurance Agency and Backspace Westport. The seller was Argentini Corp. of Sarasota, Florida, which acquired the property in 1982. Millennium Brothers LLC. purchased the property as part of a 1031 exchange.