Perched on a steep hillside on the quiet and coveted Tiburon Peninsula, a striking glass-and-steel residence hovers above the San Francisco Bay, making the sweeping waterfront feel like one vast private backyard.

The modern home is owned by former AOL executive Jan Brandt, who acquired the Marin County property through a trust in 2022 for $17.5 million, according to ownership records. During her tenure as America Online’s longtime chief marketing officer, she spearheaded the company’s groundbreaking direct-mail strategy—famously distributing installation CDs directly to consumers—which helped propel AOL to more than 22 million users at the height of the dial-up internet boom.

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The roughly 4,470-square-foot residence in the exclusive Haven Hill neighborhood is engineered with a steel structure that cantilevers over the hillside without visible corner supports. Retractable glass walls open completely to sweeping views of the Golden Gate Bridge, the San Francisco skyline, and the surrounding bay, while expansive terraces blur the line between indoor and outdoor living.

Originally built in 1959 as a modest ranch house, the property was transformed into a sleek architectural showpiece by David Kotzebue Architecture and builders Lowell and Jacquie Strauss of Amalfi West. When the redesigned residence sold in 2016 for $13 million after just two weeks on the market, it reportedly became one of the biggest residential sales in Tiburon while also setting a local record for the highest price per square foot.

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Despite all the engineering bravado and the sleek lines, the interior spaces feel surprisingly warm. Book-matched olivewood paneling, Pacific red cedar ceilings, Venetian plaster walls, French limestone, Statuario marble, and white oak floors run throughout the two-level home. An all-glass fireplace stands between the living and dining areas, while the eat-in kitchen comes outfitted with top-tier appliances and a separate catering kitchen for larger gatherings.

The property takes on a truly cinematic quality in the backyard. An infinity-edge pool stretches toward the horizon, while expansive Ipe wood decks, flamed granite terraces, and an outdoor kitchen frame sweeping bay views. Perhaps most surprising for a home perched on such a steep hillside, the property also includes a large flat lawn. The four-bedroom retreat is co-listed for $19.9 million by Alexander Fromm Lurie of City Real Estate and Joshua Deitch of Coldwell Banker Realty.

Click here to see more photos of the Marin County home.