For years, Artists Repertory Theatre shepherded its building in what was historically a gritty location, through remodels and hosting a number of other cultural offices and eventually to a new, vibrant artistic director, who has “set new standards for equity, onstage and off.” But now, ART is selling half its building, including one theatre. “The buyer is Wood Partners, a development firm that created the Pearl District high-rise Block 17. A pre-application permit filed in October shows a plan for a new 20-story mixed use building with 296 housing units, 4,000 square feet of retail and 206 below-grade parking spaces.”