Welcome to 107 Lake Street, an exceptional, fully renovated duplex for sale in the vibrant heart of downtown St. Catharines, offering a turn-key opportunity for investors or homebuyers seeking a beautiful property with a mortgage helper. The carpet-free main-floor suite features a bright, open-concept living area with a charming faux fireplace, two comfortable bedrooms, and exclusive access to a private covered side porch and a rare fully fenced backyard. Upstairs, the sun-filled upper suite boasts oversized windows, two generous bedrooms, a stylish 4-piece bath with a fully tiled tub surround, and a standout L-shaped kitchen. Both suites are built for easy living with beautifully updated kitchens showcasing custom cabinetry, quartz-style counters, subway-tile backsplashes, and full stainless-steel appliances. Situated in an unbeatable, highly walkable location, you are just steps from the shops, cafes, and restaurants of St. Paul Street, historic Montebello Park, and the Central Library. With Connaught Public School, St. Catharines Collegiate, and Brock University all nearby, plus quick commuter access to Highway 406 and the QEW, this move-in-ready property is the ultimate downtown investment.