Nestled just one block from the serene, constant-level Lake LBJ, 405 Rio offers an unparalleled blend of modern luxury and thoughtful functionality. Located in the prestigious Horseshoe Bay community, this 2022-built single-family residence is perfectly suited as your primary sanctuary, a vacation escape, or a lucrative investment opportunity. Spanning 2,742 sq. ft., this sophisticated home features 4 spacious bedrooms, a versatile bonus 5th bedroom/flex space, 3 full baths, and a 3-car garage equipped for EV charging with additional parking for 9+ vehicles. This home boasts smart features including GE Cafe appliances, Google Nest smoke and carbon monoxide detectors, and Amazon Alexa-enabled Smart TVs. Security elements such as 4 cameras, coded front & garage doors, and lockable Owner's Closets ensure peace of mind. A vast, fenced backyard offers an entertainer's dream with a covered patio, an expansive Tigerwood and cedar deck complete with massive cedar tables, a BBQ area, fire pit, and vibrant container gardens. Situated on a generous lot, the home offers the rare option to expand your estate by acquiring the adjacent lot. Horseshoe Bay's renowned resort amenities include multiple golf courses, a marina, fine dining, scenic hiking trails, a private airport, and one of Texas's coveted Dark Sky community designations for stunning star-gazing experiences. Buyer to verify all MLS information. Conveniently located just 45 minutes from Austin, 30 minutes from Bee Cave.