After 43 years with the California Association of Realtors, including 32 years as CEO, Singer has announced he’s retiring at the end of the year. Singer led the nation’s largest state association with savvy and an aggressive, innovative bent. He played a key role in the development of popular real estate form software zipLogix, which CAR’s for-profit subsidiary Real Estate Business Services developed (Singer led REBS as CEO as well for many years). In the annual ranking of the industry’s most powerful leaders, the SP 200, ranked Singer among the most powerful association execs in the industry since it launched.