Cal. Penal Code § 346

Any person who, without the written permission of the owner or operator of the property on which an entertainment event is to be held or is being held, sells a ticket of admission to the entertainment event, which was obtained for the purpose of resale, at any price which is in excess of the price that is printed or endorsed upon the ticket, while on the grounds of or in the stadium, arena, theater, or other place where an event for which admission tickets are sold is to be held or is being held, is guilty of a misdemeanor.