505 Turnberry Ln Located in the highly sought-after gated Marsh Creek community on Anastasia Island, this lakefront pool home offers an exceptional combination of privacy, architectural elegance, durability, and resort-style Florida living. Enjoy peaceful water views and stunning sunsets from the heated, screened-in pool and spa-an inviting outdoor retreat designed for both relaxing and entertaining. The expansive lanai features a fully equipped summer kitchen, while a second-story balcony provides an elevated vantage point overlooking the pool and lake. Inside, soaring ceilings and a dramatic two-story foyer create an impressive, light-filled entry. The main living area is framed by large windows that capture the beautiful water views, while a second living area overlooks the pool and is anchored by a striking fireplace and built-ins. The spacious downstairs primary suite is a true retreat, featuring private access to the pool, a dedicated sitting area, and a luxurious en-suite bath with double vanities, jetted tub, walk-in shower, and two generously sized closets. Upstairs, each bedroom features its own private en-suite bathroom, offering exceptional comfort and privacy for family and guests, along with access to a balcony overlooking the pool and water. One of the home's most distinctive features is its ICF (Insulated Concrete Form) construction, engineered to deliver exceptional strength, energy efficiency, comfort, and storm resilience. Steel-reinforced concrete walls are surrounded by continuous insulation, creating a highly insulated building envelope designed to withstand Florida's demanding climate while helping maintain a remarkably quiet, climate-controlled interior. Combined with Andersen impact windows and doors and blown and spray foam insulation, the construction helps reduce outside noise, improve indoor comfort, minimize energy loss, and reduce the workload on HVAC systems. The concrete construction also provides exceptional resistance to fire, moisture, pests, termites, and rot-offering an added level of durability and peace of mind during severe weather. Located in Flood Zone X and high and dry, the property offers another important advantage for Florida living. Additional highlights include a Spanish tile roof, rare 3-car garage, paver driveway, well irrigation, and abundant storage-including a walk-in attic and additional attic space above the garage. Extensive recent updates enhance both comfort and convenience, including fresh interior and exterior paint, new KitchenAid appliances, updated HVAC components, a new pool heater and salt cell, water heaters replaced in 2022 and 2025, a whole-house water filtration and softening system, reverse osmosis in the kitchen, and updated lighting and fixtures throughout. Optional membership to Marsh Creek Country Club offers access to championship golf, tennis, fitness facilities, and fine dining. From its lakefront setting and resort-style outdoor spaces to its highly engineered construction, this home delivers the storm resilience, efficiency, quiet comfort, and peace of mind that redefine modern Florida living.