On the leeward side of Belvedere.
45 Bella Vista Avenue · Belvedere Island
Designed by Charles Warren Callister in 1961. Reimagined by Moso Design across every system and surface, with the original architectural vocabulary preserved.
The architecture has been honored, not overwritten.
45 Bella Vista was designed by Charles Warren Callister, one of the defining voices of mid-century California architecture and the preeminent practitioner of the Second Bay Area Tradition. In 2026 it underwent a meticulous, design-forward transformation by Moso Design Inc. that stands as one of the most thoughtfully executed renovations on Belvedere Island in recent memory.
The scope is comprehensive. Four bedrooms. Three bathrooms. An entirely new gourmet kitchen. All new baths. New plumbing and electrical throughout. New walls, new doors, new floors. A ground-up reimagining of every system and surface in the home.
And yet what makes this renovation extraordinary is not what was changed, but what was preserved. The clean structural lines. The warm natural materials. The floor-to-ceiling windows that dissolve the boundary between interior and landscape. The seamless integration with the leeward Belvedere setting that made Callister's homes so enduring.
The result is a home that offers what the market rarely produces: the soul of a landmark mid-century design, and the full refinements of contemporary living, in the same address, at the same moment.
A defining figure of the Second Bay Area Tradition. His residential work is the standard for warm, structural Northern California modernism.
A Bay Area design firm known for slow, considered renovations of architecturally significant homes. Faithful, never costumed.
On Belvedere Island, leeward orientation buys long afternoons of light and shelter from the Bay's prevailing wind. Rare on the rock.
The deck reads northwest across the lagoon to the Tiburon yacht club and the marin hills beyond. A view that does not need staging.
Original Callister glazing carries the room into the canopy. Moso preserved the rhythm of the mullions while replacing every pane with high-performance glass, so the architecture reads but the house performs.
Built ground-up. Stone, wood, and integrated appliances chosen so the kitchen reads as if Callister had designed it last week. The discipline is in the restraint.
Stripped and rebuilt from the studs. Natural stone, warm timber, ribbed glazing where privacy is asked of it. No theatrics. The bath is a quiet room.
Plumbing, electrical, walls, doors. Replaced wholesale. The infrastructure of a 2026 house. The face of a 1961 one.
Mature oaks. Deck. Hill. Lagoon. The setting that made Callister's drawings work in the first place was the one piece of the house no one was willing to redesign.
A working number. Not a quote. Adjust the down, the rate, the term, and the monthly figure runs alongside.
A small island connected by causeway to Tiburon, about thirty minutes by water from the Ferry Building. Three hundred acres, walkable end to end, and one of the most coveted addresses in Marin County.
45 Bella Vista sits on the leeward slope, where the wind quiets and the afternoon light lingers. Ten minutes to the Tiburon ferry. Six minutes to Sam's Anchor Cafe. Two minutes to the Belvedere yacht club.
Send a note. We will reach out within twenty-four hours to arrange your visit on the leeward side.
Tour requests reach Olivia directly. Expect a personal reply within twenty-four hours.