Set on more than an acre of private, south-facing grounds, this exceptional Thompson Brooks–designed residence pairs architectural clarity and impressive scale with unobstructed, bridge-to-bridge panoramas across San Francisco Bay. Clean lines, walls of glass, and thoughtfully framed sightlines maximize sunlight, privacy, and the home’s extraordinary connection to its setting.The main level is designed for sophisticated entertaining and effortless everyday living, with grand-scale living and dining rooms, a family room, private office, den, powder room, and expansive eat-in kitchen. Just beyond, a glass-wrapped solarium creates a striking architectural moment, capturing direct Golden Gate Bridge views and drawing natural light deep into the home.Indoor and outdoor spaces flow seamlessly. An expansive Ipe deck invites al fresco dining and entertaining, while terraces, manicured gardens, and sun-drenched lawns offer distinct places to gather or retreat. Hummingbirds animate the gardens, and the calls of eagles underscore the home’s peaceful, secluded atmosphere. From sunrise coffee to sunsets over the water, the setting is both dramatic and serene.The bedroom level features four bedrooms and three bathrooms, including an expansive primary suite conceived as a private retreat. Large windows frame the gardens, lawn, and Bay, while a sitting area, fitted walk-in closet, dual vanities, glass-enclosed shower, and water-facing soaking tub create a beautifully composed sanctuary. An intimate garden seating area with a fountain deepens the connection to the landscape. Three additional bedrooms and well-appointed baths offer flexibility for guests, work, or creative pursuits.A two-car garage, laundry room, abundant storage, expansive lawns, and beautifully maintained grounds complete the property.Architecturally distinctive yet understated, 139 Hacienda offers a rare combination of scale, privacy, natural light, and spectacular Bay views. Its secluded setting feels worlds away, yet downtown Tiburon’s waterfront, yacht clubs, San Francisco ferry, restaurants, shops, and hiking trails are only minutes away.