Welcome to Nine Mile Marina, a rare opportunity to own a thriving turnkey marina business and waterfront residence in the heart of Muskoka. Privately owned and operated for nearly 75 years, this exceptional 3.28-acre property offers 188 feet of shoreline on picturesque Nine Mile Lake, one of Muskoka's hidden gems known for its pristine waters, rugged Canadian Shield landscape, and approximately 75% protected Crown land shoreline. As the only marina on the lake, Nine Mile Marina serves a loyal and established customer base, providing essential services to both road-access and water-access cottagers. The marina features 95 fully occupied seasonal parking spaces, 74 dock slips, 7 shore slips, and an approved MNRF permit for 8 additional dock slips. The well-maintained residence offers 3 bedrooms and 2 bathrooms, with thoughtful updates including an expanded primary bedroom, renovated main bathroom, and added kitchen pantry. Enjoy peaceful lake views from the inviting Muskoka room or relax on the private deck surrounded by mature trees. A bachelor apartment on the main level provides flexible accommodation for guests, family members, staff, or additional rental income. The marina operation includes fuel sales, propane, ice, groceries, snacks, marine supplies, and Kawartha Dairy ice cream. Extensive infrastructure features three boat storage buildings, a large service and repair shop, workshop space, multiple storage compounds, and capacity to store over 160 boats annually. Whether you're looking to continue a successful marina operation, expand an established business, or enjoy the unique lifestyle of living and working on the waterfront, Nine Mile Marina presents an extraordinary legacy opportunity in one of Muskoka's most desirable recreational settings.