Belvedere Island bayfront villa heads to auction with yacht and private pier

A Venetian-style waterfront estate at 125 Belvedere Avenue in Belvedere, California, will go to auction through Concierge Auctions, with bidding set for Aug. 25-31. The sale bundles rare Bay Area marine amenities, including a private pier, boathouse, dock and a 51-foot yacht, and could signal where ultra-luxury waterfront pricing is headed.

Why it matters: - The Belvedere Island estate combines architectural pedigree, rare waterfront access and a yacht in one auction offering. - The sale tests demand for trophy Bay Area homes as starting bids are expected well below the current $19.8 million list price. - The closing will also trigger funding through Concierge Auctions' Key For Key® program for families in need.

What happened: - Concierge Auctions will sell 125 Belvedere Avenue, a Venetian-style bayfront villa on the southwestern shores of Belvedere Island. - Bidding opens Aug. 25 and ends Aug. 31 on the company's online marketplace. - The auction is being handled in cooperation with Steven Mavromihalis and John Fitzgerald of Compass. - The property is currently listed for $19.8 million. - Starting bids are expected between $8 million and $12 million.

The details: - Architect Andrew Skurman designed the home to frame views of the San Francisco skyline, Golden Gate Bridge, Sausalito and Mount Tamalpais. - The estate includes a private pier, boat dock with lift, boathouse and direct beach access. - Interior finishes include patterned oak floors, hand-hewn cobblestone, terra cotta details and artisanal craftsmanship throughout. - A Swiss-engineered inclined elevator connects the gated street entrance to the front door. - The full-floor primary suite has bay views, dual bathrooms and an adjoining flexible room for a nursery, office or fitness studio. - The home also includes two ensuite guest bedrooms, an entertainment room with a dry bar, a detached guest casita, and an adjacent office and business center. - Outdoor amenities include a seaside deck, tidal beach and waterfront entertaining spaces. - The sale includes a 51-foot Sea Ray 510 Fly motor yacht with a dedicated slip at San Francisco's Pier 39. - Belvedere is across the Golden Gate Bridge from San Francisco and offers access to the Golden Gate Ferry, Corinthian Yacht Club, Ark Row shops and cafes, waterfront dining and shoreline trails. - Wine Country is about an hour away. - Property images are available here with credit to Zach Bruce and Lunghi Studio. - More information is available at ConciergeAuctions.com or by calling +1.212.202.2940.

Between the lines: - The marketing pitch leans on scarcity: the seller is offering a legacy waterfront property that cannot be replicated. - Concierge Auctions is positioning the process as time-certain and transparent for sellers while using global buyer access to drive competition. - Bundling a yacht and Pier 39 slip broadens the appeal beyond the house itself and underscores the property's boating lifestyle.

What's next: - Bidding opens Aug. 25 and the property will sell Aug. 31 through Concierge Auctions' online platform. - The closing is expected to support the company's Key For Key® partnership with Giveback Homes. - Agents will be compensated under the listing agreement terms.