Welcome to 18 Filton Road, a custom-built executive home in the heart of Caledon East. This 4-bedroom residence showcases 7.5-inch engineered white oak hardwood floors, upgraded trim, and designer colours throughout. A dramatic 17'10" open-to-above ceiling soars over the foyer and living room, anchored by a wood-burning fireplace with a granite facade. The custom kitchen features Fox Woodwork cabinetry with pantry rollouts, a farmhouse apron sink, custom panel refrigerator, quartz counters, backsplash, and a Frigidaire 5-burner gas range, opening to a breakfast area with a walkout to an interlocking stone patio retreat. The main-floor office boasts a bay window, crown moulding, and custom built-ins, while the laundry room offers designer cabinetry and storage. The main-floor primary retreat impresses with its own wood-burning fireplace, a bay window with walkout to the back patio, a walk-through closet by Organized Interiors, and a spa-inspired 5-piece ensuite with a jacuzzi tub and separate glass shower. Two more bedrooms and a beautifully finished 4-piece bath complete the upper level. The finished basement adds a fourth bedroom, a spacious rec room with wired 5.1 surround sound, a home gym with a rough-in for a future kitchen, a 3-piece bath, and a Sauna Ray infrared sauna. Outside, enjoy your private backyard oasis: a heated saltwater pool (14'x28') with automatic cover and granite coping, a cedar post-and-beam covered patio with motorized Somfy screens and infrared heaters, and a custom cabana with change room and wireless pool controls. The landscaped grounds back onto protected conservation land, with full property irrigation, armour stone accents, and mature gardens. The oversized double garage offers epoxy flooring, slat-wall storage, a mezzanine, and raised ceilings. Additional highlights include a new 2022 York furnace with HRV, a 7-camera security system, Nest thermostat, and central vacuum. A rare opportunity to own a true turn-key luxury retreat.