This property checks all the boxes for a fabulous Siesta Key residence: Close to the beach, boat lift in the back, newly raised seawall, and a quiet cul-de-sac. This exceptional waterfront homesite sits in the heart of Siesta Key, one of Florida's most sought-after coastal destinations. It offers a rare opportunity to build your custom dream home in a serene, prestigious setting where world-class beach access, effortless boating, and exceptional privacy come together perfectly. Nestled on a quiet, no-through-traffic cul-de-sac in the exclusive Siesta Isles enclave, the property enjoys a coveted island-within-an-island feel that delivers tranquility while remaining conveniently located. Just a 5-minute walk or drive away lies world-famous Siesta Key Beach with its renowned powdery quartz sand. Boating enthusiasts will love the direct deep-water access, complete with a private dock and a recently updated (2022) 10,000-pound boat lift. From here, you can cruise easily into the Intracoastal Waterway and the Gulf of Mexico, passing only one bridge at Midnight Pass. The lot features a substantially raised seawall recently elevated an additional 24 inches to an approximate elevation of 5-feet, which is significantly higher than most nearby seawalls. This provides enhanced protection and peace of mind for the new owner. Additional waterfront amenities include concrete steps, a spacious deck, and a convenient water access ladder. A capped freshwater irrigation well is also in place for easy landscaping maintenance. This build-ready property comes with submitted architectural plans for a stunning nearly 4,000 square foot 4-bedroom, 4-bath custom home featuring an impressive master suite, private elevator, and pool. Buyers can choose to use these existing plans and continue working with the current architect, or create something entirely their own. The generous lot offers approximately over 15,000 square feet (per architectural calculations), providing ample space for your vision. You'll also enjoy convenient proximity to world-class shopping, dining, and cultural attractions in nearby Sarasota.This is a rare blend of luxury, lifestyle, and long-term value. Build your dream coastal retreat where every day feels like a vacation - in one of the most desirable waterfront locations on Siesta Key.