An exceptional opportunity to build a custom estate on approximately 5 acres of land in Keystone Ranchettes Unit One, located along Ranch Rd in unincorporated Tarpon Springs. This parcel, comprising the northern half of Lot 15, offers a generous footprint ideal for a private residence with additional space for a pool, guest house, equestrian features, or other luxury amenities—subject to county approval. Surrounded by large-lot homes and custom builds, this location supports high-end development with a blend of privacy and open space. The property is zoned for residential use and is outside of any HOA, allowing for design flexibility while maintaining the integrity of the estate-style surroundings. With direct paved road access via Ranch Rd, the lot is ready for site planning, with well and septic systems permitted in the area. The absence of deed restrictions offers added freedom for architectural customization and long-term planning. Positioned just minutes from Lake Tarpon, Brooker Creek Preserve, and local golf courses, as well as access to Tarpon Springs' historic downtown and the Gulf of Mexico coastline, this parcel offers both tranquility and proximity. For buyers seeking to develop a distinguished homestead in a location known for its estate properties and acreage homesites, this lot provides a rare blend of space, flexibility, and upscale potential.