Discover a pinnacle of modern Hill Country living at 144 Lilly Lane, a 2021 custom-built estate in the gated community of Trinity Oaks Preserve. Situated on over three acres studded with majestic trophy oaks and backed by a 70-foot greenbelt, this 3,526 sq ft single-story home is a masterclass in design. The thoughtful floor plan features five bedrooms and a dedicated office, brilliantly highlighted by a dual primary suite layout perfect for multi-generational living or distinguished guests. The open-concept living area is anchored by a floor-to-ceiling stone fireplace and Pella windows. The entertainer's kitchen showcases a ten-foot marble island, induction cooktop, and locally milled custom cabinetry. Its secret is a truly hidden butler's pantry, fully equipped with a wet bar, wine fridge, ice maker, and deep freeze—the ultimate hub for seamless hosting. The main primary suite is a secluded retreat, featuring a spa-like bath with a fireplace poised over a freestanding slipper tub, an oversized walk-in shower, and a heated towel warmer. The grounds are a private resort. An infinity-edge pool and heated spa serve as the centerpiece, complemented by an expansive covered patio and a 20x20 pavilion with a full outdoor kitchen. Engineered for comfort and self-sufficiency, peace of mind is built-in: a whole-house generator, a full spray foam envelope, a 30,000-gallon rainwater collection system, a proactive French drain system, a Class 4 metal roof, dual HVAC units, and two tankless water heaters. The oversized 3.5-car garage includes a dedicated workshop and exercise area. Enjoy this serene sanctuary just minutes from Marble Falls and Lake LBJ, with an easy commute to Austin and proximity to the future Flat Rock Creek retail center. This is a rare opportunity to own a meticulously engineered retreat where every detail ensures luxury and comfort.