Walk the six blocks between Gough and Fillmore and you pass a farmhouse built in 1874, a saloon whose interior has not been touched since 1913, and a boutique run by an artificial intelligence that signed a lease in April. Union Street has always been a corridor where the old and the new share a block wall, but 2026 has widened that gap in a way worth paying attention to if you live here.
This is not a "best of Cow Hollow" list. It is a resident's read on the corridor as it stands right now, ordered roughly west to east so you can do the walk on a Saturday.
At the corner of Union and Webster, a small storefront at 2102 Union St. has become one of the most-watched retail experiments in the city. Andon Market opened on April 1, and an AI system named Luna is in charge, developed by Andon Labs and given a three-year lease, a $100,000 budget and access to a company credit card, then told to build and operate a profitable store.
The mechanics are unusual enough that they are worth spelling out. Andon Market is being built, stocked, and managed largely by an AI system named Luna, which even posted the job ad that brought a human worker into the mix. Customers call a phone number, place an order with Luna, and get charged for their purchase, turning an ordinary corner shop into a live experiment in automated retail. Felix Johnson responded to that listing, interviewed over Zoom, and now works at the shop.
What is actually on the shelves is calmer than the premise suggests. Andon Market is a curated lifestyle boutique at the heart of Cow Hollow, carrying art prints, books, games, candles, stationery, and artisan food. Hours are Tuesday through Saturday 10 to 7, Sunday 10 to 6, and closed Mondays. If you have been walking past out of skepticism, the free Sightglass pour on offer inside makes the visit low-stakes.
The story to tell out-of-town guests is not that a robot is running a store. It is that a Cow Hollow landlord signed a three-year lease on the premise, and that the resulting shop looks and feels like a normal Union Street boutique.
Two doors down from the AI store sits a building that predates the electric streetlight. Union Street's oldest structures are hiding in plain sight behind retail signage, and knowing which is which changes the walk.
| Address | Year / Era | What It Is Now |
|---|---|---|
| 2040 Union St. | 1874 | Cudworth Mansion farmhouse, now shops and restaurants |
| 1980 Union St. | 19th century | The Twin Wedding Houses, now shops and restaurants |
| 3199 Fillmore St. | 1913 interior | Balboa Café, saloon interior largely unchanged |
The Cudworth and the Twin Wedding Houses are documented in local guides: the 1874 Cudworth Mansion farmhouse at #2040 and the Twin Wedding Houses at #1980 are both now occupied by shops and restaurants. The reason the corridor still reads as a village rather than a strip mall is that a surprising number of tenants are operating inside these Victorian and Edwardian shells rather than replacing them.
Balboa Café is one of the oldest saloons in the city, and its bar and interior décor remain untouched since 1913. Order the martini and you are drinking in a room that has watched more than a century of Cow Hollow evolve.
The context is worth sitting with. The area is called Cow Hollow in reference to the fact that it was once the city's dairy community, and in the 1800s the section consisted of 30 dairies. The farmhouse at 2040 is a physical trace of that.
Ask ten Cow Hollow residents where they eat on a Wednesday night and you will get ten answers, but the pattern behind those answers is legible. The corridor has stopped trying to be a destination dining strip and settled into something more useful: a mix of counter-service standbys, wine bars built for the second date and the two-hundredth, and one or two rooms designed for a birthday.
A walking-order sample, west to east:
None of this is a discovery. All of it is orientation. The point of living on a corridor like this is knowing which door to open on a Tuesday at 7:15 PM when you have not planned anything.
If you have been in Cow Hollow for even a year, you have already lost a Saturday to it. The Union Street Festival is now in its fifth decade, and 2026 marked the 48th anniversary of The Union Street Festival. This year it ran Saturday, June 6, 2026, with the festival held on Union Street between Gough and Fillmore, running 11 am to 7 pm and free to attend.
The through-line since 1976 has been the Waiter Relay Race, and it still runs the same way. Competing servers must open a bottle of wine, pour two glasses, and carry them intact on their tray to the top of Green Street and back again. The 2026 race took place on June 7th at 12 pm.
If you are new to the neighborhood, put the first weekend of June on a repeating calendar entry. If you are not new, you already know to book brunch reservations that Saturday for the following weekend instead.
Union Street is not reinventing itself. It is doing something rarer: absorbing a genuinely strange new tenant, an AI-run boutique tested by every major national outlet, without losing the martini at Balboa or the wine list at Roaming Goat or the Sunday morning at Rooster & Rice. A corridor that can hold a farmhouse from 1874 and a storefront leased to a language model in the same block, and let both operate as normal businesses, is doing something the rest of the city is not.
That is the argument for staying. The corridor is old enough to have proved it can survive change, and it is new enough this year to be worth walking again.
If you have been thinking about the value of your home on one of the streets that feeds into Union, or you would like a read on how the corridor's mix of long-tenured and brand-new tenants is shaping demand on your block, the team at Gail and Brad would be glad to talk. Request a complimentary home valuation whenever the timing feels right.