Nestled on a serene cul-de-sac in the coveted Rio Vista / Long valley enclave of Glenview, 515 Rio Vista Rd is a one-of-a-kind estate that lives like brand-new construction. Meticulously transformed through a full gut renovation, a second-story addition, and a rear frame expansion, this home offers approximately 6,400 square feet of luxurious living space on nearly an acre (.87 acres). The exceptional lot size and depth create a true estate setting, offering privacy, room for entertaining, and a sense of grandeur. Located within highly regarded Glenview schools, this home perfectly balances scale, comfort, and timeless style. From the moment you arrive, the property's sophisticated exterior commands attention with lime-washed brick, Hardie siding, black-framed windows, and a bluestone front stoop. Inside, every detail reflects thoughtful design and high-end craftsmanship. The main floor blends open-concept living with elegant, defined spaces. Sunlight floods the family room through expansive windows, highlighting a striking beam ceiling and a stunning stone gas fireplace, an inviting centerpiece for gatherings. The formal living room features its own beautiful stone gas fireplace, adding warmth and architectural interest, while the dining room is elevated by an elegant tray ceiling design that enhances its sense of scale and sophistication. A dedicated study offers a private retreat for work or reading. At the heart of the home, the gourmet kitchen is a showpiece. A dramatic waterfall island with seating anchors the space, complemented by quartz countertops, Amelia Mother of Pearl glass mosaic tile backsplash, and top-tier panel-ready appliances: a Sub-Zero 48" Classic Side-by-Side Refrigerator, a 48" six-burner gas range with infrared griddle, and Bosch dishwasher. A butler's pantry and breakfast nook complete the space, flowing seamlessly to the family room. The main floor also features a guest bedroom with a full bath, a powder room, and a mudroom with direct access to the attached 3-car garage. Upstairs, the second-story addition creates a private retreat. The primary suite is a sanctuary, with a spacious bedroom, a spa-inspired bath with radiant floors, freestanding tub, wall-mounted fixtures, and separate closets. The second bedroom has an en-suite bath. 3rd and 4th bedrooms share a Jack-and-Jill bath. A second-level laundry room adds everyday convenience. The expansive lower level offers a complete lifestyle experience. A large recreation room, dedicated gym, wine room, and two additional bedrooms are complemented by a full jack and jill bath, powder room, storage room, laundry room and utility area. Radiant heated floors in the basement. The basement is fully waterproofed for added peace of mind. Additional highlights include a new 400 Amp underground electrical service, Dual-zone HVAC provides comfort on every level, high-end millwork throughout, pocket doors, custom cabinetry, and designer finishes at every turn. From the beam-ceiling family room to the dual stone fireplaces, from the refined dining room to the serene primary suite and expansive lower level, 515 Rio Vista Rd invites you to experience modern luxury in a private, estate-like setting.