Looking for a family home with a pool, oversized lot, and walkout basement in Oshawa? Welcome to 173 Switzer Drive, a one-owner, beautifully maintained 4-bedroom, 4-bathroom home in the highly desirable Centennial neighbourhood of Oshawa. Situated on a rare 60 x 198-foot lot, this property offers nearly 1,800 sq. ft. above grade plus a finished walkout basement, creating exceptional space for growing families, multigenerational living, or entertaining. Inside, you'll find spacious principal rooms, a sunken living room with walkout access, a formal dining area, an eat-in kitchen, and a convenient mudroom/laundry room with garage and side-yard entry. Upstairs features four generous bedrooms, including a primary suite with a private ensuite. The finished walkout/up basement adds incredible versatility with a sunken family room, stone wood-burning fireplace, recreation space, cedar wet sauna/change room w/shower, additional bathroom, and separate entrance potential. Step outside to your private backyard retreat, professionally landscaped by OGS, featuring a large in-ground concrete pool with waterslide and diving board, expansive patio areas, covered composite deck and gazebo, mature trees, and beautifully manicured gardens. Additional highlights include a metal roof, attached garage, and parking for up to 9 vehicles on the double-stamped concrete driveway. Located close to top-rated schools, parks, shopping, public transit, and everyday amenities, this rare Centennial property offers the perfect blend of indoor comfort and outdoor lifestyle. A unique opportunity to own one of Oshawa's most desirable oversized lots.