Introducing 151 Griffen Avenue, a meticulously renovated Colonial in Scarsdale's sought after Quaker Ridge neighborhood. Impeccably renovated to the highest standard, this stunning modern four-bedroom colonial has been thoughtfully reimagined with no detail overlooked, delivering timeless elegance and modern luxury. The gracious entrance hall opens to an expansive, sun-filled great room. A jewel box den detailed with Phillip Jeffries wallpaper and a marble-surround gas fireplace offers an intimate retreat with captivating views of the mature breathtaking landscaping, including a striking Japanese red maple. The formal dining room features a wall of windows and French doors connecting seamlessly to the bluestone patio and park-like grounds. The luxurious eat-in kitchen by JEM Kitchens showcases a center island, premium finishes including a marble backsplash, gorgeous glassos countertops, and a breakfast area with sliding doors opening to the expansive AZEK deck - featuring custom-designed, hand-cut railings and a large retractable awning. A guest bedroom with modern ensuite bathroom, a handsome office with custom built-ins and window seat, a new laundry room with mudroom, and a stylish powder room with designer wallpaper complete an exceptional main level. The entirely gut-renovated second floor is anchored by a heavenly primary suite. The dream oversized walk-in, wrap-around closet features windows, a built-in bench, custom storage, and a center island with drawers. The spa-inspired all white marble primary bathroom boasts radiant heated floors, a separate soaking tub beneath a large window, a generous double-sink vanity, and a glass-enclosed steam shower with bench, rain shower, wall-mounted shower, handheld, body jets, steam, and heated embedded mirror. Motorized shades and a motorized drop-down ceiling television elevate the experience. Two additional generously proportioned bedrooms and a beautifully renovated bathroom complete the second level. The spacious finished walkout lower level provides space for recreation, wall-to-wall carpeting with premium padding, a second laundry room with storage, and access to the attached two-car garage. Situated on over half an acre of flat professionally landscaped grounds, with ample room for a pool and the potential for future expansion, this property features a double-width circular driveway, new bluestone patio with stone steps, new AZEK deck, and meticulously redesigned front and rear facades. Geothermal heating and cooling and cellulose insulation ensure year-round efficiency. Hardwired WiFi connectivity, Lutron lighting, and Sonos sound system throughout deliver the thoughtful infrastructure a home of this caliber demands. This home exemplifies Quaker Ridge living at its finest, turn key and in mint condition this residence has been elevated in every way and is ready for the most discerning buyer!