Welcome to 40 Tremaine Terrace located in a prominent, exclusive Cobourg residential neighbourhood on a quiet cul-de-sac bordering Lake Ontario. The fully fenced yard with mature trees & perennials provides a private oasis offering peace and tranquility overlooking Cobourg Creek and Lake Ontario. This recently renovated 4 bedroom + den, 4 bathroom, 3600 sq ft (approx) professional & stylish home offers a sleek, modern kitchen and appliances with centre island, a bright, sun filled, open living area which walks out to a spacious rear deck, complete with BBQ gas line. Perfect for entertaining! Main floor and second floor, sophisticated Master bedrooms with private ensuites. The bonus room above the garage makes a great gym, or quiet private area for reading or reflection. New furnace 2025. The skylights, stained glass windows, fireplace, gas stove, crown mouldings, interlock driveway, second floor laundry, etc are additional details suggesting a grand, thoughtful floor plan and a stunning home with attention to detail! Great value here with an estimated $1.9 million insurance replacement value!