State Sen. Noreen Evans made it official Monday, announcing on her Facebook page that she will not seek a second term in 2014.

The Santa Rosa Democrat took credit for writing the nation's first Homeowner's Bill of Rights, improving the foster care system, protecting the coast, keeping state parks open and preserving California's environmental protection law, known mainly by its acronym, CEQA.

But the 58-year-old Evans, who was elected to the state Assembly in 2004 and before that served on the Santa Rosa City Council, noted that 2013 marks her 20th year in public office, and that "politics (is) not how I planned to spend my life."

She wrote that she plans to return to practicing private law once her term ends next year. She already has been earning extra income as a lawyer while serving in Sacramento, state financial disclosure forms show.

Evans' announcement has fueled speculation about who might replace her. Names bandied about include former Assembly members Michael Allen and Patty Berg; current Sonoma County Supervisor Mike McGuire; Marin County Supervisor Susan Adams; and San Rafael councilman Damon Connolly.