The blaze Thursday in Encino was doused in less than a half-hour.
Fire spokesman Erik Scott says two women - one of them in a wheelchair - and a man were hospitalized for possible smoke inhalation and are in good condition.
Their names weren't released, but Funicello's ex-husband, Jack Gilardi, says the 68-year-old actress was at home with her current husband and a nurse. Funicello has multiple sclerosis.
Gilardi says they were exposed to smoke but will recover.
Funicello was a Mouseketeer on TV's "Mickey Mouse Club" in the 1950s and had a singing and acting career that included a series of beach movies.
