1880 Jackson, a block from Lafayette Park: three closings this year at $1,390 a foot, including a top-floor two-bedroom listed at $2,395,000 that closed at $3,010,000

1880 Jackson is a ten-unit building, so three closings in a year is nearly a third of it changing hands. Three condominiums closed between January 1 and October 15, 2026, on $6,260,000 of volume; nothing closed in 2025, and the record on this site, which begins in 2020, has never held more than two sales in a year. The median sale is $1,700,000 and the median price per square foot is $1,390, the highest annual figure in that record, against $1,285 for the two 2025 sales and $1,008 in 2024.

The sale that defines the year is #601, the 1,752-square-foot top-floor two-bedroom with a wood-burning fireplace and Golden Gate views: it was listed at $2,395,000 and closed at $3,010,000 on April 24, after nine days, 26 percent over the asking price, at $1,718 a foot (listing, #601). The other two are one-bedrooms and both are resales by buyers from 2024. #602, 1,309 square feet, was bought in June 2024 for $1,120,000 and sold on October 14 for $1,700,000, up 51.8 percent. #505, 1,115 square feet, was bought in April 2024 for $1,310,000 and sold on August 17 for $1,550,000, up 18.3 percent, without listing. The median listed sale took nine days to contract, and two of three went inside two weeks.

The building is a 1930s Mediterranean-style walk-up with two elevators, one of them for freight, an on-site manager, a 360-degree roof deck and a side garden, with dues that cover water, garbage and steam heat (listing, #601). Its earlier record runs the same way as this year's: #403, about 2,000 square feet, went from $1,850,000 in 2011 to $2,527,000 in 2016 and $2,550,000 in July 2020 (SocketSite).

2026 so far, against the same window in 2025

Closings at 1880 Jackson 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 1880 Jackson St since July 2020, 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 $1,390 a square foot.

By bedroom count, 2025 against 2026

Every closing in 2026

All 3 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.

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

Jackson Street, between Lafayette Park and Polk

The building is one block from Lafayette Park, the 12.5-acre hilltop park with two tennis courts, a playground and an off-leash dog area, and a few blocks from the Polk Street corridor, with the Pacific Market around the corner on Pacific Avenue and the Haas-Lilienthal House on Franklin (listing, #601; Wikipedia)). Polk Street turned over in 2025: Lord Stanley at 2065 Polk and Broadway closed in March, with the Jupiter Room under construction in its place for a fall 2026 opening, and the Peet's at 2193 Polk closed with Bageletto announced for the space in April 2026 (SF Standard; Warrin).

No AI office of any size is within walking distance of this block; the office figures in the paragraphs below describe SoMa, two miles east.

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