1099 23rd Street, the 20-unit 2000 loft building in Dogpatch: one closing this year, a bi-level one-bedroom listed at $760,000 and sold at $850,000 in nine days, $1,169 a foot, the top of the building's record

1099 23rd Street's one sale this year is the highest per-foot figure in its record, on its smallest unit. One condominium closed between January 1 and October 15, 2026, against one in the same window of 2025; $850,000 of volume against $1,250,000. The price per square foot is $1,169, against $690 on last year's sale of #18, an 1,812-square-foot unit, $883 in 2021, $871 across two sales in 2020 and $930 across two in 2015; no year in the record holds more than two closings.

#1, a 727-square-foot bi-level one-bedroom loft facing north with an assigned covered garage space, was listed on September 2 at $760,000, went pending on September 11 and closed at $850,000 on October 5 after nine days, 12 percent over the ask; its dues run $806 a month and cover the gym, the roof deck, the elevator and structural insurance; it was bought in December 2015 for $801,000, up 6.1 percent, and it is the year's one paired resale; the listing record shows it sold new in April 2000 for $395,000 (Redfin; RubyHome). The 2025 sale, #18, closed at $1,250,000 with dues of $1,090 (MLSListings).

The building dates from 2000, 20 units with a gym, a view roof deck, an elevator and a secured garage; the street index numbers them 1 to 21 with no 13 (Redfin street index).

2026 so far, against the same window in 2025

Closings at 1099 23rd St between January 1 and October 15, 2026, set against January 1 to October 15, 2025. Days on market is median days from listing to contract on MLS-listed sales; "under 15 days" counts how many of those went into contract inside two weeks.

Year by year

Every recorded closing at 1099 23rd St since March 2001, by calendar year. 2026 runs through October 15, 2026. Days on market is available for MLS-listed sales from 2020 onward.

No year in the building's record holds five or more closings. 2026 year to date stands at $1,169 a square foot.

By bedroom count, 2025 against 2026

Every closing in 2026

All 1 closings through October 15, 2026, highest price first. Square footage and days on market are as recorded on the MLS; county-recorded transfers that never listed show no days.

Paired resales

Units that closed in 2026 and had a prior recorded sale in the same building. The change is gross, before any improvements, fees or carrying costs.

1 of these resold above the prior price, 0 below.

23rd Street, Dogpatch

The Minnesota Street Grove, the block of trees between 24th and 25th a block south, reopened in summer 2025 after a community-led rebuild, and Esprit Park at 19th and Minnesota reopened in February 2025 after an $8.5 million renovation with $5 million from UCSF (Potrero View; UCSF). Three blocks north at 600 20th Street, Stephen Curry's Thirty Ink sold the two-story building for about $11 million in September 2026 to Dane Reinsurance, run by executives of the AI insurance startup Corgi, after the plan for a Curry headquarters collapsed in 2025 (SF Standard). Across I-280 at 1053 to 1055 Texas, a 25-unit plan was cut to six apartments in March 2026 (SF YIMBY).

No AI office sits in Dogpatch; OpenAI's Mission Bay buildings, 550 Terry Francois and 1800 Owens, are a mile north up Third (Bisnow; CompStak).

The timetable that every South of Market building now sits inside is the public-offering calendar. Anthropic filed a confidential draft registration with the SEC on June 1, 2026, a week after a funding round that set its valuation at $965 billion (TechCrunch). As of this week the Standard reports the Anthropic listing has been pushed to November, after the midterms, that OpenAI's has moved to 2027, and that Anthropic is weighing a lockup longer than the usual six months (SF Standard). The same piece carries a Redfin estimate that current and former OpenAI and Anthropic employees could in theory buy close to a third of the metro area's homes with their proceeds, and the counter-argument from UC Berkeley's Enrico Moretti and the Bay Area Council's Jeff Bellisario that the money is concentrated in fewer hands than past booms and that these firms create fewer jobs per dollar because so much goes to data centers rather than headcount. The record in this report ends on October 15. None of it reflects a single share that has been sold.

Two citywide facts frame every building figure here. First, the office recovery is lopsided: CBRE put Q3 2026 vacancy at 27.7 percent citywide, down 6.6 points in a year, but Avison Young splits that into roughly 12 percent for Class A and north of 31 percent for Class B, and a Presidio Bay executive told Bisnow the headline number is misleading for that reason (Bisnow). Second, the condo market is still digging out: the Chronicle's May analysis found that only eight Bay Area ZIP codes showed inflation-adjusted condo gains over the year, all of them in San Francisco, and that Noe Valley's typical condo remained close to $400,000 below its 2019 level in real terms (SF Chronicle).

How this was counted

Two records feed this review. The MLS layer is one row per listing and carries days on market and square footage. The county layer reaches back further and catches transfers that never listed, but records the same closing once per data source, so the two were merged on unit, date and price and each closing kept once. Below-market-rate units and transfers under $300,000 are listed but excluded from every median. "Same window" means January 1 to October 15 of each year. Nothing here is a valuation of any unit, and nothing here is advice.

Tim McMullen · CA DRE #02016832
[email protected] · (415) 691-9272