Welcome to 46 Griffen Avenue: a one-of-a-kind stone Colonial where timeless craftsmanship meets 21st-century innovation. Set on a private, level .37-acre corner lot in a prime Scarsdale neighborhood, this charming home has undergone a transformative upgrade that blends modern luxury with state-of-the-art energy efficiency features. Central to this update is a new geothermal heating and cooling system with modern ductless fan coil units in 11 zones throughout the home. This innovative HVAC system features two heat pumps as a backup so you never lose heating or cooling; thermal storage tanks to shift when the heat pumps run; and a second domestic hot water tank for endless showers—rare and highly efficient upgrades typically found in homes priced far higher. New spray foam insulation blankets the interior of this home’s 18” thick stone walls to help keep a consistent, comfortable temperature year round without the drafts commonly found in old homes. This fully electrified home features all-electric kitchen appliances including an induction range, a heat pump clothes dryer, heat pump domestic water heater, two EV car chargers, and the only home in Scarsdale equipped with a SPAN smart electrical panel—a cutting-edge system that rebalances energy usage in real time. Tech-savvy buyers will appreciate the integrated smart home system complete with voice-command lighting, music, intercom, video doorbell, among others. Sleep safely behind a new, state-of-the-art security system coupled with motion-activated floodlight cameras, new wiring, and reinforced structural upgrades. The interior boasts an open-concept layout with sunlit living spaces, a renovated kitchen and updated bathrooms. On the first floor, a spacious and modern kitchen—complete with two sinks and a separate beverage fridge—leads into a living room perfect for family life. Also on the first floor, French doors lead to an expansive sunroom wrapped in windows, showcasing original stone details and custom window seating. Completing this floor is a wood-burning fireplace (working), another living room, and an elegant powder room. On the second level, the primary suite includes a spacious bedroom with another wood-burning fireplace (working), a sleek office (or nursery), a stylish bath with double vanity, skylit double shower, rich stone and wood accents, radiant heated floors, and a washer/dryer. Four additional bedrooms, including one with a full ensuite bath, and another full bathroom complete the second level. The lower level features thoughtful and ample storage, including a second pantry and multiple closets. Outdoors, enjoy a fully fenced in pool with upgraded pump, filter, and skimmer. The expansive property offers maximum privacy with plenty of space for the kids—or dog—to run around in a fully fenced in backyard. The recently redone patio is ready for entertaining. Enjoy the beautiful gardens—including lilac and peony bushes, a rose garden and other flowers throughout the season. The new, automated sprinkler system makes sure your yard and garden stay lush without you having to think about it. Located on the corner of Griffen Avenue and tranquil Normandy Lane, this home is a short walk to Quaker Ridge Elementary School and down the sidewalk from the free bus to Scarsdale Middle and High School. Surrounded by beautiful homes and just down the street from Winged Foot golf course (where the 2028 US Open will be held), 46 Griffen Avenue is an extraordinary blend of past and future. Don't miss a rare chance to own a classic home with cutting-edge performance and smart functionality while enjoying all Scarsdale has to offer—including a 32 minute express commute to Grand Central Station, award-winning, highly acclaimed public schools and fabulous amenities.