611 Washington, the condominiums atop the Montgomery Washington Tower: two closings this year at $906 a foot, across the street from the Transamerica Pyramid, with a $68,000-per-unit assessment starting in January

611 Washington is the residential entrance of an office tower, and this year the two sides of the building made news at the same time. Two condominiums closed between January 1 and October 15, 2026, against one in the same window of 2025; $2,975,000 of volume against $1,800,000. The median price per square foot is $906, against $943 last year and the $1,422 of 2021, when two units closed at a median of $3,187,500; the record on this site has never held five sales in a year.

#2505, a 1,908-square-foot two-bedroom, closed at $2,075,000 on January 3 after 67 days, $1,088 a foot. #2306, a 1,241-square-foot one-bedroom, closed at $900,000 on March 4 after 33 days, $725 a foot. The median listed sale took 50 days to contract, and neither went inside two weeks. No unit that closed in 2026 has a prior recorded sale on this site, so there is no paired-resale table.

The cost of owning here changed this year. A current listing for #2305, 1,685 square feet at $1,549,000, discloses a temporary special assessment of about $68,000 per unit payable over 36 months from January 1, 2026, with regular dues expected to return to about $2,445 a month afterward; the building has a 24-hour door attendant, a heated rooftop pool and health-club access (Homefront, #2305). The condominiums occupy the top seven floors of the 1984 Montgomery Washington Tower at 655 Montgomery, above three floors of retail and garage, office floors and a fitness floor; a building page counts 32 residences of 1,241 to 5,163 square feet, and the building record on this site lists 15 (JLL; RubyHome).

2026 so far, against the same window in 2025

Closings at 611 Washington 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 611 Washington St since December 2002, 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 $906 a square foot.

By bedroom count, 2025 against 2026

Every closing in 2026

All 2 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.

Montgomery and Washington, across from the Pyramid

The tower stands directly across from the Transamerica Pyramid, where the Financial District meets Jackson Square and North Beach, with a Hilton next door and a Proper Foods and a Coffee Cultures in its base (Hoodline; CBRE). In August 2026 Beacon Capital put the office portion of 655 Montgomery, 273,272 square feet and 87 percent leased, on the market at about $150 million, having paid $191.5 million in 2019; the condominiums are excluded from the sale (Hoodline). Across the street, the Pyramid complex sold in March 2026 to Cyprus-based Yoda Plc for $691.6 million, and by September 30 the campus had signed about 126,000 square feet of 2026 leases, a New York venture firm among them (Axios; CRE Daily).

Two blocks north in Jackson Square, Jony Ive's LoveFrom holds 807, 809, 831 and 845 Montgomery and 112 Columbus, about $78 million of buildings since 2020, and OpenAI gained its foothold in the district through its merger with Ive's io (SF Examiner; The Real Deal). Databricks' 150,000 square feet at One Sansome is four blocks south (Bisnow).

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