Torrance, CA – May 21, 2012 – (RealEstateRama) — To meet the growing needs of Southern Arizona’s real estate market, Coldwell Banker Residential Brokerage has announced two management changes in Arizona: Les Boomer has been appointed regional vice president for the Southern Arizona region and Patty Erickson, longtime assistant branch manager of the Foothills office has been named branch manager of the same office.