Welcome to 11 Sigma Place, a spectacular 4 bedroom, 3 bathroom single-family residence tucked away in one of Riverdale’s most private and sought after neighborhoods. This one of a kind modern home offers an exceptional blend of indoor comfort and outdoor luxury, with breathtaking views of the Hudson River and Palisades. As you arrive via the cobblestone driveway, the main entry welcomes you into a foyer, positioned next to the dining area featuring a pass through window connected to the kitchen, perfect for keeping an eye on kids or entertaining while cooking. The gourmet chef's kitchen features granite countertops, custom cabinetry with glass upper windows, a large center island with a built-in stovetop, and a matte black vent hood that adds architectural interest. A sunny breakfast nook and direct access to an outdoor terrace make this level ideal for everyday living and social gatherings. Upstairs, you'll find two well appointed bedrooms and a modern full bathroom. The highlight of this floor is the expansive second living room, filled with natural light from a wall of windows and enhanced by a statement column feature. On the top level, you’ll find the private primary suite with a dedicated loft workspace accessible via a charming spiral staircase, and access to a spa-like main bathroom located just outside the room. The bathroom is outfitted with marble tiling, a dual vanity, a jacuzzi tub, and a separate glass shower, gifting a luxurious escape at the end of your day. An additional fourth bedroom on this level adds to the home's flexibility for guests, family, or office use. The ground level includes a private garage, abundant storage space, a versatile open room perfect for a playroom, gym, or media den, and a full bathroom, ideal for guests. The home’s outdoor space is equally impressive. A large terrace from the living room overlooks the above ground swimming pool, while the wraparound deck offers space for summer gatherings, lounging, and enjoying sunsets. Multiple green areas invite gardening, play, or serene relaxation, while a private driveway provides access to the garage and extra parking. Don’t miss the chance to own this dream home tucked away in one of Riverdale’s most desirable and peaceful corners, whole close to NYC, Metro-North, local schools, parks, and shops. A rare opportunity to enjoy modern living with nature, space, and comfort all in one, schedule a visit today!