At the very edge of Belvedere Island on an exclusive, near-private cul-de-sac, the Belvedere Sanctuary at 4 Blanding Lane is a rare, world-class estate set within one of the most coveted enclaves on San Francisco Bay. Positioned on what is known as “Billionaires Point,” and surrounded by only a handful of residences, this extraordinary two-building compound offers a level of privacy and prestige that is nearly impossible to replicate. From this remarkable vantage point, sweeping panoramic views unfold in every direction—from the iconic Golden Gate Bridge to the Bay Bridge, across Sausalito and beyond—creating the sensation of a private retreat suspended above the water. Here, the landscape is ever-changing, with light, weather, and time painting a new masterpiece each day. Designed with bespoke finishes and timeless craftsmanship, the residence seamlessly blends Old World elegance with modern sophistication. Teak-framed windows, bronze railings, and hand-hewn wide-plank walnut floors anchor the home in warmth and quality, while soaring ceilings and curated designer lighting enhance the natural light and dramatic scale. The indoor-outdoor flow is effortless, opening to a stunning infinity-edge pool, outdoor fireplace, expansive stone terraces, and lush, manicured gardens—perfectly suited for both grand-scale entertaining and serene seclusion. The primary suite is a sanctuary unto itself, offering a private sitting area, custom-designed closets, integrated surround sound, and breathtaking views of the Golden Gate Bridge—even from the shower—transforming everyday living into an extraordinary experience. A separate studio guest house, complete with full amenities and its own garage, mirrors the elevated design of the main residence, creating a versatile and private compound with dual entrances—ideal for guests, extended stays, or a refined work-from-home environment. Set at the coveted tip of Belvedere Island, just across the Bay from San Francisco, this distinguished location offers one of California’s most exclusive lifestyles. Residents enjoy access to world-class yachting culture, including the renowned San Francisco Yacht Club and Corinthian Yacht Club, along with charming waterfront shops, fine dining, and convenient ferry service. 4 Blanding Lane is more than a home—it is a rare and irreplaceable offering. A place where privacy, presence, and perspective converge… and where the beauty of the Bay becomes part of everyday life.