Welcome to 164 Baillie Avenue, a spacious, custom-built waterfront home in the heart of Constance Bay, offering year-round living and direct access to the Ottawa River. Set on nearly half an acre with a sandy shoreline and panoramic views, this thoughtfully designed two-storey home has been meticulously maintained by the original owners. Inside, the main level features 9-foot ceilings and generous principal rooms filled with natural light. The kitchen and adjoining family room open to a large deck-perfect for hosting or relaxing with coffee and a view. Formal living and dining rooms offer flexible space, while a cozy den and a central loft upstairs provide options for a home office or reading nook. Upstairs, the primary suite includes a walk-in closet and spacious ensuite, accompanied by three additional bedrooms and a full bath-ideal for family life or hosting guests. The full, unfinished basement offers excellent storage or potential for future development. Above the attached double garage, a private in-law suite with its own entrance, kitchen, bathroom, and two bedrooms adds exceptional versatility-suiting multigenerational living, guests, or potential rental income. With a total of six bedrooms and nearly 4,000 sq ft of finished living space, there's plenty of room to grow. This property is located in a welcoming waterfront community just 40 minutes from downtown Ottawa, close to local trails, beaches, restaurants, and an LCBO outlet. Whether you're paddling in the summer or snowshoeing in the winter, this is a place to enjoy nature without sacrificing convenience.