Exquisite custom Mediterranean-style estate w/stunning architectural design in desirable Castlewood Community. Nestled on substantial hillside lot w/spectacular views of rolling hills, affording huge potential for private vineyard, ADU or pool site. Grand entrance features split-level foyer surrounded w/ornate medallions thoughtfully placed throughout. Sunken living room with a cathedral open beam ceiling, towering windows offering prime views and double-sided fireplace w/marble façade. Gourmet kitchen w/high-end appliances, grand-scaled master suite complete w/loft retreat, spa bath & spiral staircase leading to backyard. Bathrooms feature opulent ceramic/glass washbowls w/luxurious finishes. Lush, tiered expansive backyard to entertain friends & family. 4 car attached garage w/addl space for storage. Enjoy all amenities of Castlewood Country Club/Golf Course! Near top Pleasanton schools w/easy access to Historic Downtown, 680 Fwy & Livermore Wineries.