Welcome to 510 4 Street in Stirling-an exceptional, fully developed home offering 3,800 sq ft of thoughtfully designed living space, complete with a fully finished walkout basement! This impressive 5-bedroom, 3.5-bathroom property features 2,275 sq ft above grade with 9-foot ceilings, engineered hardwood flooring, and a bright, open-concept layout built for both everyday living and entertaining. The main living area is warm and inviting, highlighted by a cozy gas fireplace and seamless flow between the living room, kitchen, and dining spaces. The kitchen is a true standout, showcasing quartz countertops, a built-in wall oven and microwave, and a functional walk-through pantry that connects directly to the garage mudroom for functional day-to-day living. The main floor offers two spacious bedrooms, complemented by a well-appointed 3-piece bathroom conveniently located between them, while an additional 2-piece bathroom and thoughtfully designed laundry space complete this level. Privately set above the garage, the primary suite is a true retreat-featuring its own den-style sitting area, a generous walk-in closet, and a luxurious 5-piece ensuite with quartz finishes and a tiled shower. The fully finished lower level expands the home's living space with two additional bedrooms, a 4-piece bathroom, a large family room with a second gas fireplace, and a fully soundproofed theatre room complete with a 100-inch screen and immersive 7.2 surround sound, along with an abundance of storage. The walkout basement is perfectly set up for entertaining, with a covered outdoor space wired for a TV and speakers-ideal for game days or relaxing evenings outdoors. Designed for modern living, the home includes Cat5e wiring throughout and integrated sound across key interior and exterior spaces. Situated on a beautifully landscaped 66 x 165 lot, the property also features a heated 3-car (960 sq ft) attached garage, central A/C, and a rear deck with a gas line for your BBQ-perfect for enjoying the outdoor space. A rare blend of size, upgrades, and functionality in the desirable Stirling community!