People magazine said Saturday that Grammer's representative confirmed the nuptials took place the previous day at city hall with Grammer and his own fiance, Kayte Walsh, in attendance.
Spencer Grammar, 27, is an actor herself with a role on ABC Family's "Greek."
Dad will soon join daughter on the roster of celebrity newlyweds. He and Walsh are set to get hitched at the end of the month.
Grammer's high-profile divorce from Beverly Hills "Real Housewife" Camille Grammer was recently finalized.