YPT is conveniently located at Fort Mason Center which offers reasonably priced parking just outside the door!  There is also free parking a short distance from the theatre, outside the Fort Mason gate.  Please check the events schedule on the Fort Mason website, sometimes large events can limit parking.  An alternative place is the Upper Fort Mason area, accessible at Octavia Street.  On days when events are going on, please allow ample time to find parking or use public transportation.