This home offers nearly 6700 SF under a heated and cooled roof! Keep the home as-is for the Auto Aficionado or Convert the 2007 SF heated and cooled space into additional living while still retaining an oversized 4-car garage. This exceptional estate features a rare, climate-controlled 12+ car garage--custom-designed to integrate with the home's refined architecture. Located in the prestigious, gated waterfront community of Costa Bella, this stunning residence by renowned designer Jauregui and esteemed builder C&A Builders sits on a private 1-acre cul-de-sac lot that conveys with a coveted 30' boat slip in the marina. Inside, beamed ceilings, wood flooring, and elegant architectural details elevate the floor plan, which flows effortlessly through formal living and dining spaces, a dedicated office, and a cozy media room with a bar. The gourmet kitchen features Wolf/SubZero appliances, custom cabinetry, a generous island, and a well-equipped butler's pantry for seamless entertaining. The private owner's suite is complete with patio access, a spa-style bath with an oversized shower, luxurious jacuzzi tub. A main-level guest suite offers ideal privacy for visitors. Energy-efficient foam insulation, tankless water heaters, Andersen windows/doors, and a fully automated AV system for integrated sound, WiFi, and media ensure modern comfort and control. Step outside to a backyard oasis with a cascading waterfall pool, wet-edge spa, putting green, outdoor kitchen with refrigerated wine tap, fireplace, and covered patio. Full-yard turf, mature oak trees, and lush landscaping create year-round beauty and low-maintenance luxury. The 30' boat slip with lift and touchless cover allows quick access to Lake Travis. Costa Bella's world-class amenities include a clubhouse with lake views, resort-style pool, tennis courts, pickleball, basketball, and private marina--all just 7 minutes to Hill Country Galleria and 30 to downtown Austin, within acclaimed Lake Travis ISD.