The Third Avenue Playhouse will be expanding into the former home of the Door County Advocate newspaper right next door.  The Advocate building at 235 North 3rd Avenue was purchased last month by the Shirley Weese Young Trust. According to a news release from Creative Business Services/ CBS-Global, plans call for a redesign of the interior layouts, which will allow the Third Avenue Playhouse to add more room for the arts.  There will also be other major upgrades including solar power.  Remodeling work is expected to begin this month.