The $2 million Urban Showhouse will open in the South End next Thursday. The space will be decorated by top designers (these are undecorated photos of the space, obviously). On April 22, you can rub shoulders with the decorators at a party at J.E.M. (470 Shawmut Ave.). You can meet design stars Dennis Duffy, Peter Griglik from Jonathan Adler, Lisa Kreiling, Andrew Terrat, and Dee Elms. They are charged with transforming the blank home into a dream house. The party takes place from 6 to 9 p.m. and you can buy tickets to see the Urban Showhose at the event. The decorated space opens April 29.