According to EPOCH Senior Living, Waterstone at Wellesley, a new senior living community at 27 Washington St. under development since 2010, opened to residents on April 10th. The community, a joint venture by EPOCH Senior Living and National Development, has been under development since November 2010. A Grossman's Hardware store that stood empty for nearly 20 years was razed in June 2010 to make space for the project. The 207,742 s/f Waterstone at Wellesley includes 134 apartments for seniors 62 and older. It features independent and assisted living rental apartments, a fitness center, pool, theater, restaurant-style dining, designer kitchens, putting green, a riverfront walking trail and underground parking garage. The community is situated along the Charles River and behind a CVS pharmacy and a Newton-Wellesley Hospital ambulatory surgical center, which are located along Washington St. These tenants are part of the Waterstone at Wellesley development. The community will employ 50 full-time workers and is led by executive director Kristine Tilton. Residents of the new senior living community began moving in on April 10th and move-ins continued over the next several weeks. A formal opening ceremony will be held in May. Elkus Manfredi Architects is project architect, Wellesley Design Consultants provided interior design services, and Cranshaw Construction was general contractor.