What's Driving Hillsborough's Luxury Market in 2026
By Phil Chen, Broker Associate, Christie's International Real Estate Sereno, serving Hillsborough and the PeninsulaThe question I get most often right now is some version of: is the AI thing actually showing up in Hillsborough? My answer, watching this market every week, is yes, but not in the way the headlines suggest. The deals look different than they did two years ago, and so does the buyer pool. The specific reasons people choose Hillsborough over Atherton, Menlo Park, or Pacific Heights have shifted in ways worth understanding before you list or write an offer.
I am a Broker Associate with Christie's International Real Estate Sereno, and through Christie's global affiliate network I see how Peninsula luxury connects to capital coming from the Bay Area, New York, and Asia. That cross-border view, plus working in Mandarin with a meaningful share of my clients, is the lens I bring to the question of what AI wealth is doing to a town like Hillsborough.
The data underneath the noise
Start with what the numbers actually say. In the first quarter of 2025, sales of homes priced above $5 million rose 82 percent across the Bay Area, with Santa Clara County up 115 percent year over year in March. The Peninsula's upper end is moving on its own dynamic, separate from the rate-sensitive middle of the market.
Hillsborough sits right inside that luxury band. The 2025 average home price in Hillsborough was $6,493,465, an 11 percent year-over-year increase, even as broader Bay Area inventory stayed tight.The mechanism is straightforward. OpenAI's valuation jumped from $300 billion to $500 billion last fall, and Anthropic recently reached $183 billion. Neither company has gone public, but both have run employee secondary sales. In one OpenAI deal alone, employees sold $6.6 billion in shares to outside investors. That is a generation's worth of liquidity moving without an IPO, and one longtime Bay Area market analyst has called this cycle an "economic tsunami" that could dwarf the Facebook and Uber IPO cycles combined.
Why Hillsborough specifically absorbs this money
Hillsborough is uniquely set up to be a destination for new AI-tier wealth, and the reasons are structural, not aspirational.
Town zoning under Title 17 of the municipal code is single-family residential only, with no commercial uses and substantial minimum lot sizes across most districts. That produces the thing buyers at this tier are actually paying for: large parcels, mature landscaping, no through-traffic, and a quiet that you cannot manufacture in San Francisco or even Burlingame's flats. For a founder who has spent three years inside an open-plan office in SoMa, that quiet is a feature, not a preference.
Hillsborough also offers a price step-down from Atherton. The town's 2025 average sat in the $6.5 million range. Comparable Atherton inventory is now resetting at a $30 million-plus ceiling, with three separate $30 million-plus new-construction sales recorded between late 2024 and early 2025. Buyers who would have gone to Atherton five years ago are increasingly choosing Hillsborough because the equity check is roughly a third the size for a home that delivers a similar lifestyle, and the inventory is broader.
The third factor is global connectivity. Peninsula luxury agents have reported a "dramatic uptick" in international buyer activity at the ultra-high end, with notable inflows from Hong Kong and mainland China. Hillsborough has been a long-standing destination for that buyer pool, and the AI cycle is bringing a new generation of cross-border buyers, some of whom are Mandarin-speaking and want representation that can move comfortably between English-language escrow documents and Mandarin-language family conversations.
What this changes about how deals happen
For sellers, the practical implication is that the buyer most likely to write your strongest offer in 2026 is not the buyer your agent profiled in 2022. The new pool is younger on average, more likely to be paying with proceeds from a secondary stock sale rather than a public-company exit, and more likely to be working through a trust or LLC for privacy reasons. A meaningful share is all-cash. Nationally, about 32.8 percent of home purchases in the first half of 2025 were all cash, and the share is materially higher in premium tiers.
That changes how I price, how I stage, and how I market. Off-market and quiet listings matter more than they did a cycle ago, because privacy-focused buyers will pay a premium for a transaction that does not generate a public price comp tied to their family name. At the same time, public listings with strong global syndication, which the Christie's affiliate network provides, reach the international buyer who is shopping the Peninsula from Hong Kong, Shanghai, or Singapore at the same time they are shopping Manhattan and Vancouver.
For buyers, the implication is the opposite. You are competing against a buyer pool with cash speed and cross-border breadth. The Hillsborough listings that stay on the market are the ones with a flaw the AI-money buyer cannot live with, like a busy road, a difficult floor plan, or a remodel project they do not have the appetite for. The clean listings move fast, often before they hit MLS.
What I'd tell you over coffee
If you are thinking about selling in Hillsborough in the next twelve months, the question I would want to talk through first is whether you go on-market or off-market, and specifically which slice of the global buyer pool I would target on your behalf. If you are buying, the conversation I want to have is about which streets and lot configurations will hold value through the next part of the cycle, because not every Hillsborough address is equally insulated from a correction.
Either way, the AI wave is real, and it is restructuring this market in ways that reward sellers and buyers who understand the new buyer pool. I am always happy to walk through what I am seeing on your specific block.Phil Chen is a Broker Associate with Christie's International Real Estate Sereno, serving Hillsborough, Burlingame, San Mateo, Atherton, Menlo Park, and the broader Peninsula. He speaks both English and Mandarin and operates under his personal brand, Sybarite Realty. DRE 01715177. Reach him at phil@sybariterealty.com or (415) 271-1920.