104 Running Brook Trl Situated on 6.5 flat, usable acres in the gated Double Horn community, this property offers exceptional privacy, an attached private casita, an expansive screened-in porch, and a rare 3-car air-conditioned garage. Ideally positioned on a quiet cul-de-sac corner lot, the home is surrounded by natural Hill Country landscape, creating a peaceful and private setting. The open-concept interior features travertine and wood flooring throughout the main living areas and primary suite. Large windows invite abundant natural light while framing views of the acreage. The gourmet kitchen flows seamlessly into the dining and living spaces, providing an ideal layout for both everyday living and entertaining. The private primary suite includes coffered ceilings, wood flooring, dual vanities, soaking tub, walk-in shower, and a spacious walk-in closet. The attached casita features a private entrance, kitchenette, living room, bedroom, full bath, and two closets (one with laundry hookups), offering flexible space for guests or multigenerational living. Outdoor living is a standout feature, with a generous screened-in patio shaded by mature oak trees, additional covered porches, and open areas to enjoy the surrounding landscape. The climate-controlled 3-car garage provides valuable space for vehicles, hobbies, fitness equipment, or storage and is complemented by an extended driveway. The home also features a dedicated office with custom built-ins, a spacious laundry room with a sink, and a secondary bedroom currently set up as a home gym, providing versatile space for fitness, guests, or everyday living. Additional improvements include a new roof (2023), fresh interior paint, updated ceiling fans, lighting, and more. Double Horn residents enjoy a low tax rate and access to community amenities, including a pool, pavilion, playground, basketball court, and scenic walking trails, all conveniently located near Marble Falls, Bee Cave, Lake Travis, and Lakeway.