Image courtesy Höweler + Yoon The new center will occupy a roughly 17,000-square-foot, two-story space in a new waterfront tower. In an effort to provide more services for its members and create a stronger public presence, the Boston Society of Architects (BSA) plans to move to a bigger, more visible spot this November. And after launching a competition to engage emerging architects and solicit the best ideas for the new center, the BSA has selected Höweler + Yoon Architecture’s attention-grabbing design. The new center will occupy a roughly 17,000-square-foot, two-story space the BSA is renting in a new waterfront tower.