640 West End AvenueRecorded sales & closing prices
640 West End Avenue, at West 91st Street · Upper West Side
36 recorded closings, 2003–2026. Sortable and searchable below.
- Recorded closings
- 36
- Date range
- 2003–2026
- Median $/sf
- $1,178
- Listing discount
- 3.6%
- Monthly carry/sf
- $2.57
- Price range
- $499K – $3.98M
Change in the building’s median $/sf over each window, on a floor-adjusted basis — standardized to the building’s average floor, so it reflects price rather than which floors happened to sell. This is a different method from The Roebling Index, which publishes plain medians and applies no floor adjustment; the two are not interchangeable. Floor adjustment standardizes for floor only. It does not control for condition, size, exposure, renovation or the mix of what happened to trade. (2022 marks the rate-shock inflection.) Like-for-like repeat-sale figures to follow.
The complete recorded-sale history for 640 West End Avenue, compiled from NYC Department of Finance transfer records, with apartment-by-apartment detail from The Roebling Research Library. Across sales with a public asking price, the building carries a median listing discount of 3.6% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy here.
Price per square foot over time
28 sales with a known square footage, by closing date.
Premium by line
What each line’s exposure is worth — its light, outlook, and orientation — measured against the building’s average sale.
Recent closings
The building’s 10 most recent market sales.
| Date | Unit | Apartment | Price | $/sf | vs. Ask |
|---|---|---|---|---|---|
| May 19, 2026 | 12C | 2 BR · 1 BA · 900 sf | $950,000 | $1,056 | -3.6% |
| Jul 20, 2022 | 1B | 4 BR · 3 BA · 1,945 sf | $1,800,000 | $925 | +0.0% |
| Feb 4, 2022 | 1C | 1 BR · 1 BA · 549 sf | $650,000 | $1,184 | -10.3% |
| Apr 2, 2021 | 2B | 3 BR · 2.5 BA · 2,049 sf | $2,400,000 | $1,171 | -17.2% |
| Dec 29, 2020 | 12B | 1 BR · 1 BA · 800 sf | $885,000 | $1,106 | +7.3% |
| Aug 9, 2019 | 5D | 2 BR · 1.5 BA · 1,098 sf | $1,575,000 | $1,434 | -7.1% |
| Feb 20, 2019 | 11A | 3 BR · 2 BA · 1,712 sf | $3,000,000 | $1,752 | -17.7% |
| Mar 1, 2018 | 8A | 3 BR · 2 BA · 1,729 sf | $2,400,000 | $1,388 | -19.9% |
| Sep 13, 2017 | 3B | 738 sf | $800,000 | $1,084 | — |
| Nov 9, 2016 | 5D | 2 BR · 1.5 BA · 1,098 sf | $1,590,000 | $1,448 | +2.6% |
The retrade record
Lines that have changed hands more than once in the public record — the building’s appreciation arc, apartment by apartment.
Every recorded sale
Sort any column; filter by unit or keyword. Prices are the recorded transfer amount at the NYC Department of Finance. Every sale sits in one of three states: counted in the building’s medians and trend; shown but excluded as a non-arms-length or nominal transfer; or shown and ⚑ flagged for review — a possible duplicate filing or an extreme $/sf outlier, held out of the statistics pending manual verification rather than allowed to move them.
| Apartment | ||||||
|---|---|---|---|---|---|---|
| May 19, 2026 | 12C | 2 BR · 1 BA | 900 | $950,000 | $1,056 | -3.6% |
| Jul 20, 2022 | 1B | 4 BR · 3 BA | 1,945 | $1,800,000 | $925 | +0.0% |
| Feb 4, 2022 | 1C | 1 BR · 1 BA | 549 | $650,000 | $1,184 | -10.3% |
| Apr 2, 2021 | 2B | 3 BR · 2.5 BA | 2,049 | $2,400,000 | $1,171 | -17.2% |
| Dec 29, 2020 | 12B | 1 BR · 1 BA | 800 | $885,000 | $1,106 | +7.3% |
| Aug 9, 2019 | 5D | 2 BR · 1.5 BA | 1,098 | $1,575,000 | $1,434 | -7.1% |
| Feb 20, 2019 | 11A | 3 BR · 2 BA | 1,712 | $3,000,000 | $1,752 | -17.7% |
| Mar 1, 2018 | 8A | 3 BR · 2 BA | 1,729 | $2,400,000 | $1,388 | -19.9% |
| Sep 13, 2017 | 3B | 738 | $800,000 | $1,084 | — | |
| Nov 9, 2016 | 5D | 2 BR · 1.5 BA | 1,098 | $1,590,000 | $1,448 | +2.6% |
| May 19, 2016 | 9B | 3 BR | 2,049 | $3,750,000 | $1,830 | -6.0% |
| Aug 27, 2015 | 10BD | 3 BR · 3 BA | 1,850 | $3,400,000 | $1,838 | -7.9% |
| Aug 25, 2015 | 10B | 1 BR | 753 | $1,402,500 | $1,863 | — |
| Aug 25, 2015 | 10B | 1 BRnon-market transfer (excluded from $/sf & trends) | — | $100,000 | — | — |
| Aug 25, 2015 | 10D | 2 BR | 1,133 | $1,997,500 | $1,763 | — |
| Jul 16, 2015 | 11B | 3 BR | — | $4,500,000 | — | -4.2% |
| May 19, 2015 | 7B | 3 BR | 2,049 | $3,650,000 | $1,781 | — |
| Sep 8, 2014 | 2B | 3 BR | 2,049 | $3,985,000 | $1,945 | +0.0% |
| Jun 2, 2014 | 9A | 3 BR · 2 BA | 1,800 | $2,920,000 | $1,622 | +4.3% |
| Sep 25, 2013 | 3D | 2 BR | — | $1,365,000 | — | -2.2% |
| Apr 25, 2013 | 10D | 2 BR | — | $1,325,000 | — | +2.3% |
| Jun 1, 2011 | 2B | 3 BR | 2,049 | $2,701,417 | $1,318 | +12.6% |
| Feb 16, 2011 | 7B | 3 BR | — | $2,100,000 | — | -9.7% |
| Sep 20, 2010 | 5A | 3 BR | 1,750 | $1,950,000 | $1,114 | +0.0% |
| Apr 23, 2010 | 1C | 1 BR · 1 BA | 504 | $540,000 | $1,071 | — |
| Mar 15, 2010 | 4C | 1 BR | 850 | $726,000 | $854 | +4.5% |
| Jun 2, 2009 | 12B | 1 BR | 800 | $775,000 | $969 | -3.0% |
| Feb 6, 2009 | 6B | 2,049 | $1,950,000 | $952 | — | |
| Jun 26, 2008 | 10A | — | $1,325,000 | — | — | |
| Feb 15, 2007 | 10B | 1 BRnon-market transfer (excluded from $/sf & trends) | — | $120,000 | — | — |
| Jan 15, 2007 | 10B | 1 BR | 750 | $767,500 | $1,023 | -3.9% |
| Nov 28, 2005 | 1C | 1 BR · 1 BA | 504 | $499,000 | $990 | — |
| Aug 26, 2005 | 9A | 3 BR | 1,800 | $2,495,000 | $1,386 | +0.0% |
| Aug 19, 2005 | 3D | 2 BR | 1,098 | $999,000 | $910 | -4.8% |
| Jan 20, 2005 | 12A | 814 | $825,000 | $1,014 | — | |
| Oct 15, 2003 | 4A | 2 BR | — | $645,000 | — | -7.2% |
Sources, exclusions and how these figures are computed
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01239-7501). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage from recorded condo declarations and offering plans. Storage, parking, and commercial units are excluded from all figures. Floor- and line-level $/sf are time-controlled (each sale measured against the building’s going rate at the time of sale) and expressed at today’s pricing, so they isolate the floor or line premium rather than blend two decades of market movement.
Put this data to work.
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