This year’s free Rossmoor Home Show on Thursday, March 5, is so big, residents will need a map to find all of the 51 vendors situated around the Tahoe Room in the Event Center. They’ll also need a tote bag for all of the free handouts they’ll get. The fifth annual event, sponsored by Berkshire Hathaway HomeServices, is from 11 a.m. to 3 p.m. Lunch will be available for purchase so attendees