Tonight, the design review board will check out early designs for the expanded Washington State Convention Center. If the $1.4 billion expansion goes through as planned, it will include not only 1.2 million square-feet of exhibition & meeting space but also a 30-story residential tower with 428 units, 16-story office building and new retail & public spaces all along the exterior. The plans even call out potential uses of the retail spaces such as restaurants, ice cream shops and a distillery/brewery. The main entrance would be located at Pine and Ninth across from the Paramount Theatre, surrounded by promenades lined with public seating and small-scale vendor storefronts. Pine Street Group and LMN Architects hope to start construction in two years and complete the new convention center space by 2020.