What's Actually New on Union Street This Summer, from Someone Who Walks It
Cow Hollow has a long-running rhythm: a coffee on the way to a workout, a boutique window on the way back, brunch that stretches until it isn't brunch anymore. If you have lived here more than a year or two, that pattern is muscle memory. The interesting thing about the summer of 2026 is that three of the newest arrivals on and just off Union Street are quietly rewriting what a Saturday errand looks like, and the shift is worth knowing before your next walk.
Here is the pattern: the tenants moving in this year are not designed for casual foot traffic. They want you to book, reserve, or arrive on purpose. That is a departure from the browse-and-drift Union Street of the last two decades, and it changes which blocks reward slowing down.
The clearest example sits at 2102 Union. Andon Market opened as San Francisco's first AI-owned retail boutique, carrying curated books, candles, games, stationery and artisan goods. The store's inventory decisions, hires, and space design were made by an AI operator that introduces itself as Luna, and the shop landed on the front page of The New York Times in April 2026. What matters for a local is not the novelty press. It is that a shop this specific, this narrow, has replaced the more generic tenants that used to occupy prime Union frontage. You walk in for a reason, not because the window pulled you.
"A store built for the slowest, most human pleasures."
That is how the operator frames it, and it reads as a mission statement for what Union Street is becoming.
A block west, 1906 Union is under conversion. The Yard Strength Training signed a lease for a roughly 4,300-square-foot facility at 1906 Union Street, scheduled to open in September 2026. The model is not a drop-in gym. The new location will feature 8 to 12 dedicated squat rack "pods," allowing individual members and independent personal trainers to reserve private training spaces by the hour. The founder's own read on the location is straightforward: the Cow Hollow site was chosen to bridge The Yard's existing San Francisco and Mill Valley studios, in one of the city's most active fitness and residential corridors. Reservation-only pods are a very different animal from the walk-in Equinox and SoulCycle that trained the neighborhood to expect crowded lobbies. It is another shop, in effect, that only rewards intent.
The third piece opened at the start of the year and has had time to bed in. Turtle Tower now has a second location in Cow Hollow at 3145 Fillmore Street, in the former Ricco Mediterranean space, with the dining room soft-opening on Saturday, January 17. Turtle Tower is a destination pho, not a neighborhood noodle stop. People come to Fillmore for it. The block responds accordingly: quieter mid-week lunch, denser evening walk-ups from Green and Filbert.
Read across the three and the thesis lands. The tenants earning square footage in 2026 are the ones you plan around, not the ones you stumble into.
If you want to actually feel the shift, here is a walk that threads it together without doubling back:
The route uses about six blocks and three of the seven stops did not exist in this form eighteen months ago.
None of this works without the older places that give the street its ballast. Balboa Café is one of the oldest saloons in the city, with a bar and interior décor untouched since 1913. Atelier Crenn and Bar Crenn on Fillmore hold the fine-dining ceiling. Perry's at 1944 Union has been serving the same cafe menu long enough to be a landmark. Plumpjack Wine & Spirits at 3201 Fillmore is still the neighborhood bottle shop, and The Caviar Co. at 1954 Union remains the reason you can walk out of a Union Street errand with something you did not know existed that morning.
The reason to name them together is that the new pattern only makes sense against the older one. Balboa runs on walk-ins. Andon does not. Perry's does not need you to reserve anything. The Yard will not let you skip the reservation. Both models are now living on the same six blocks, and the mix is what makes the current version of Union Street specific to 2026.
While you are walking, the buildings themselves have not stood still either. The 1874 Cudworth Mansion farmhouse at #2040 and the Twin Wedding Houses at #1980 are both now occupied by shops and restaurants, with flower stands adding a seasonal burst of color on the four blocks running between Fillmore and Octavia streets. The Union Street stretch that draws the highest concentration of visitors sits inside vintage Victorian and Edwardian buildings, which is part of why a store like Andon reads as a modern object placed inside a very old frame. Worth pausing on if you have out-of-town guests who assume Cow Hollow is only a shopping street.
For anyone who wants to look at the neighborhood with a guide instead of a phone, the San Francisco Public Library and San Francisco City Guides are running a Cow Hollow walking tour on Sunday, August 30, 2026, from 1 to 3 p.m., meeting at the Golden Gate Valley branch at 1801 Green Street. Because Cow Hollow was spared destruction from the 1906 disaster, it contains structures from nearly every decade since the 1860s, and the tour traces the district's transformation from a rural suburb to a full city neighborhood. Registration through the library shows the August 30 slot filled quickly, but a waitlist runs through SF City Guides, and the same tour repeats. The reason to mention it is not the tour itself. It is that the volume of interest in a two-hour walking tour of your own street is a fair proxy for how much has changed and how much people want to place it in context.
If Union Street has been on autopilot for you, this is the summer to reset the mental map. The block between Buchanan and Webster is different than it was in January. Fillmore between Filbert and Greenwich reads differently in the evening than it did last fall. A neighborhood that rewards intent is a neighborhood that rewards residents. Tourists tend to keep drifting.
That shift also matters if you are thinking further ahead. Retail turnover on a corridor like Union Street tends to lead residential interest by a few quarters. When the shops start narrowing their audience and asking for reservations, the buyers who follow tend to be more specific about which block they want, not just which neighborhood.
If you want to talk through what a particular block feels like right now, or what the shift in Union Street's tenant mix means for a home you already own here, Janeen Anderson works Cow Hollow building by building and would welcome the conversation. Let's connect.