Rare offering! Atop Silicon Valley shines this magnificent 4100+ sq ft gated home on 12+ acres with sweeping views of western hills, vineyards, the valley, and the bay. Architecturally striking home bathed in natural light has 7 BR or office, library, gym, yoga/art/music studio, playroom - 4 BA - 3 fireplaces - 2 kitchens - 2 laundries. Parking for 20+ cars. Create your dream estate. Add 2 ADUs and also a pool, pool house, s/he shed, workshop, greenhouse, and more on flat expanses. Plant multiple gardens and/or vines. Sink into the hot tub with gazebo and lounge on many decks for the ultimate indoor/outdoor lifestyle. Toast your 350-bottle wine cellar. Main kitchen is open, airy, and perfect for entertaining. Extra kitchen is ideal for catering, parties, and guests or ensuite apartment. High end tile, granite, marble, stone, hardwood floors. Sub-Zero refrigerators and Thermador/Miele stoves/ovens. Enjoy the privacy and proximity of this spectacular Portola Valley property!