Tucked beneath majestic oak trees and set on nearly an acre of lakefront property, this custom-built estate offers a rare blend of privacy, space, and waterfront living on Lost Lake (also known as Coon Lake), part of the highly sought-after Alligator Chain of Lakes. Built in 2008, the property includes a beautifully designed main residence and a detached guest apartment, with a total of 5,297 square feet of living space and over 8,100 square feet under roof. The main home features four bedrooms, three and a half bathrooms, and a three-car garage, with thoughtfully designed living spaces and a private 2nd-floor balcony that captures peaceful lake views from multiple vantage points. Inside, the home balances comfort and function with generous gathering areas, a gas fireplace, a formal dining room with a coffered ceiling, and an updated kitchen completed in 2024 with new granite countertops, backsplash, Z-Tech cooktop, and double ovens with wireless controls. The spacious primary suite offers two large walk-in closets, one of which is constructed as a reinforced safe room, and a spa-style bath with a hydromassage tub, dual vanities, and a separate shower. Upstairs, the home offers additional flexibility with a large bonus/game room and a private home theater, complete with projector, screen, and sound system, all included with the sale. A standout feature of the property is the detached guest residence, located above a second three-car garage. This approximately 1,200-square-foot apartment includes a full kitchen, living room, dining area, oversized bedroom (with potential to convert to two bedrooms), and a full bathroom, along with a convenient half bath on the garage level. It provides an ideal space for extended family, guests, rental, or private workspace. Outdoor living is equally impressive. The expansive lanai and patio areas offer approximately 1,500 square feet of covered and open space, creating the perfect setting for relaxing or entertaining while enjoying tranquil lake views. The backyard also features a custom koi pond with waterfall and approximately 30 koi fish valued between $10,000 and $15,000, adding a unique and peaceful element to the landscape. For boating and water enthusiasts, the property includes a private dock with a boat lift and new lift motor, providing direct access to the Alligator Chain of Lakes for fishing, boating, and recreation. Major updates include a new roof in 2024, a new main HVAC system in 2024, a second Carrier Infiniti HVAC system, approximately six years old, and updated drain lines. With two separate three-car garages, no HOA, mature landscaping, fruit trees, and nearly an acre of lakefront land, this property offers a rare opportunity to enjoy expansive waterfront living while remaining conveniently close to Harmony, Melbourne, St. Cloud/Lake Nona regions.