LOS ANGELES — AZ Wellesley Plaza LLC has acquired an 82,258-square-foot office building, which is located at 12304 Santa Monica Blvd. in Los Angeles’ Westside, from Santa Monica-Wellesley, a joint venture, for $28.9 million. Completed in 1981, the three-story building was 98 percent occupied at the time of acquisition. T.C. Macker and Craig Newlands of Coldwell Banker Commercial WESTMAC represented both parties in the transaction.