Set in Colonia's most prestigious neighborhood, this exceptional property offers a rare opportunity to create a bespoke luxury residence with professionally designed expansion plans already in place. The offering includes the existing home along with detailed architectural plans for a refined, multi-level transformation that elevates both style and functionality. The proposed design showcases a grand gourmet kitchen with a dedicated pantry, seamlessly flowing into expansive open-concept living and dining spacesideal for upscale entertaining and elegant everyday living. Thoughtful layout enhancements maximize natural light, improve circulation, and create a sophisticated atmosphere throughout the main level. The upper floor is designed with generously proportioned bedrooms, ample closet storage, a private laundry room, and beautifully appointed full bathrooms, delivering comfort, privacy, and convenience. Additional unconditioned storage areas provide discreet space for seasonal and long-term needs. The finished basement adds a versatile living environment suitable for a private lounge, media retreat, or entertaining suite, while also incorporating a reinforced safe room structure for enhanced peace of mind. Structural upgrades, including professional underpinning, ensure lasting integrity and support the expanded footprint. Multiple design concept options allow the future owner to tailor finishes and details to their personal vision while benefiting from a professionally planned foundation. This is a rare chance to bypass the design phase and move directly toward crafting a custom estate-quality home. Located in the most desirable section of Colonia, 21 Windsor Lane offers close proximity to major transportation, fine dining, shopping, and top-tier amenitiescombining luxury living with everyday convenience. This elegant private residence presents an extraordinary opportunity to create a timeless luxury home in one of the area's most sought-after locations.