$4.065 million Upper West Side Two bedrooms, 2½ bathrooms The roughly 100,000-square-foot amenity space at the under-construction Waterline Square—a three-tower, 263-condominium complex (model shown in rendering) developed by GID Development Group—includes a regulation-size hard court with spectator seating. A 30th-floor unit, priced above, is 1,497 square feet. Sales: Corcoran Sunshine Marketing Group