Welcome to 4074 River Mill Way, a stunning luxury residence in Mississauga's prestigious Rathwood community, set on an exceptional 155-ft-deep lot with no sidewalk! A grand circular driveway accommodates up to 7 cars, plus a 2-car garage. Step inside to a dramatic 17-ft soaring foyer and elegant open-concept main level featuring solid hardwood floors, a private executive office, dedicated laundry/mudroom and striking see-through double-sided fireplace. The recently renovated custom chef's kitchen showcases integrated Bosch cooktop & built-in oven, elegant countertops, custom cabinetry and abundant storage. Upstairs offers 4 spacious bedrooms and beautifully upgraded bathrooms, highlighted by a luxurious primary retreat with a newly remodeled spa-inspired 5-pc ensuite and private balcony, while two additional bedrooms enjoy their own ensuite baths. The professionally finished basement features extra-high ceilings, an expansive recreation area, custom wet bar, full bathroom, separate guest/nanny bedroom and private sauna. Step outside to your own resort-style oasis with a modern tiered deck overlooking a sprawling inground pool, extensive interlocking stone and an exceptionally deep backyard-perfect for entertaining and family living. Nestled in a quiet, family-friendly enclave close to parks and top schools, including Glenforest SS with its renowned IB Program. Minutes to Hwy 403/401/QEW with easy access across the GTA. A rare combination of lot size, space, luxury and lifestyle in the heart of Rathwood!