Mill Valley estate offered in trade for Anthropic equity amid share frenzy

A 13-acre Mill Valley estate with sweeping views of San Francisco, an infinity-edge pool and a spa is being offered for a different kind of currency: Anthropic equity. The unusual ask turns a luxury-home listing into a test of how far AI paper wealth is reaching into Northern California’s top-tier housing market.

Storm Duncan, an investment banker who lives primarily in Jackson Hole, Wyoming, said he created a LinkedIn page for the fully furnished home because he would “like to exchange” it for Anthropic stock. He described the move as a “diversification play,” signaling that he sees the private company’s shares as a useful asset to hold alongside real estate. Duncan also owns other properties, and said he chose the Mill Valley house in part because it would appeal to Anthropic employees.

Location is part of the pitch. Duncan said the property is about a 20-minute commute to Anthropic’s offices in San Francisco, a detail that makes the deal feel tailored to a narrow class of potential buyers with both the right stock and the right job. He has also said he would cover closing costs if a buyer trades Anthropic equity for the home.

The response has been immediate. Multiple offers from Anthropic employees have reportedly come in since Duncan posted the deal, a sign of how coveted the company’s shares have become in the private market. Anthropic’s secondary-market valuation has been reported at roughly $1 trillion, giving added weight to any attempt by employees to turn stock into real-world assets, whether through a sale, a loan or, in this case, a house swap.

That valuation frenzy helps explain why the Mill Valley listing stands out well beyond Marin County. In one version of the listing, the estate has been described at about $4.8 million; in another, it has been placed around $8 million. Either way, the offer highlights a market where access to prime property is increasingly shaped by who can trade private-company equity, not just who can write a check.

The broader effect is a new kind of exclusivity. As AI companies mint paper fortunes on the back of secondary-market demand, those gains are starting to leak into high-end housing, where sellers are experimenting with stock-based barter and buyers with prized shares can compete in ways cash buyers cannot. In Mill Valley, the home on the hill is not just for sale. It is a window into how AI wealth is reshaping the rules of luxury real estate.