16019 Fontaine Ave One of Lake Travis's only estates with a transferable private marina slip lease, a pool, and over an acre estate homesite. In Vineyard Bay, a fully gated lakeside community, 16019 Fontaine Ave delivers what few addresses in 78734 can: boat access 90 seconds from your front door, resort-style community amenities, and 4, 867 sq ft of custom-designed living set against Hill Country views. Vineyard Bay's private marina is exclusive to residents, with only 60 of the homes having slips. The community wraps it in a full resort lifestyle: a recently renovated pool and cabana complex, a clubhouse with gym and sauna, tennis and pickleball courts, and secure boat storage, all within a gated enclave minutes from Lake Travis ISD's top-ranked schools. Inside, Elliot Johnson, AIA, and C&A Builders left their mark in every detail. A grand entry gallery opens to formal dining with a dramatic arched brick ceiling and a 500-bottle climate-controlled wine cellar. The kitchen is anchored by Thermador Professional appliances, dual islands, a wine bar, and a walk-in pantry. The main-floor primary suite is its own private oasis: white oak floors, direct pool access, a spa bath with soaking tub and oversized shower, dual vanities, and a custom walk-in closet with built-in dressers and a dedicated packing island. A second main-floor ensuite, a private study, and a powder room complete the ground level. Upstairs: two additional ensuite bedrooms, a game room, and a flexible living area for families or guests. Outside, a large stone patio and a fully equipped outdoor kitchen with professional grill, refrigerator, ice maker, and sink frame the pool and flat lawn perfect for playing or entertaining. Wired for sound and data throughout. Lake Travis ISD. No state income tax.