Section 649: If other’s property managed voluntarily, not to be abandoned (negotiorum gestio)

If a person manages or operates a business or property of another person on his or her own without information to, or authority from, that other person, the person shall, so long as such business or property continues to exist, not abandon such business or property without handing it over to that other person, his or her successor or agent or until that other person removes him or her.