Back to 817 Fifth Avenue building profile
817 Fifth AvenueRecorded sales & closing prices
817 Fifth Avenue, New York, NY 10065
6 recorded transfers, 2005–2023. Sortable and searchable below.
Co-ops are normally measured by price per room, since square footage is not officially recorded for them. This building is shown in price per square foot because most of its sales carry documented footage, which makes the sharper measure the honest one here.
- Recorded transfers
- 6
- Date range
- 2005–2023
- Median $/sf
- $3,180
- Listing discount
- 10.7%
- Monthly carry/sf
- $2.77
- Price range
- $10M – $18M
Change in the building’s median $/sf over each window, from the raw yearly medians — too few standardized single-line units here to adjust to an average-floor basis, so which apartments happened to trade moves these alongside price. (2022 marks the rate-shock inflection.) Like-for-like repeat-sale figures to follow.
As a cooperative, 817 Fifth Avenue prices on a price-per-room basis rather than strictly per square foot, with floor, Central Park frontage, layout, ceiling height, and condition driving value. Turnover is exceptionally light — full-floor Fifth Avenue apartments in a 16-unit building trade rarely, and each sale is an event. Apartment-level context matters far more than any building average, and the George B. Post & Sons pedigree, the full-floor plans, and the Park views support pricing at the top of the market for residences that present well. Buyers should expect a demanding board process to accompany any purchase.
The complete recorded-sale history for 817 Fifth 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 10.7% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy here.
Price per square foot over time
4 sales with a known square footage, by closing date.
Recent closings
The building’s 6 most recent market sales.
| Date | Unit | Apartment | Price | $/sf | vs. Ask |
|---|---|---|---|---|---|
| Jun 15, 2023 | 9 | 3,450 sf | $12,000,000 | $3,478 | — |
| Jan 12, 2023 | 5 | 5 BR · 4.5 BA · 3,800 sf | $10,950,000 | $2,882 | -12.4% |
| Oct 16, 2020 | 5 | 4 BR · 4 BA · 3,800 sf | $9,999,000 | $2,631 | -28.3% |
| Apr 13, 2015 | MAIS12 | 5 BR · 5 BA · 5,500 sf | $18,000,000 | $3,273 | -9.1% |
| Oct 6, 2010 | 7 | 3 BR · 3,450 sf | $17,155,125 | $4,973 | — |
| Apr 8, 2005 | 6 | 4 BR | $8,600,000 | -3.4% |
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 | ||||||
|---|---|---|---|---|---|---|
| Jun 15, 2023 | 9 | 3,450 | $12,000,000 | $3,478 | — | |
| Jan 12, 2023 | 5 | 5 BR · 4.5 BA | 3,800 | $10,950,000 | $2,882 | -12.4% |
| Oct 16, 2020 | 5 | 4 BR · 4 BA | 3,800 | $9,999,000 | $2,631 | -28.3% |
| Apr 13, 2015 | MAIS12 | 5 BR · 5 BA | 5,500 | $18,000,000 | $3,273 | -9.1% |
| Oct 6, 2010 | 7 | 3 BR | 3,450 | $17,155,125 | $4,973 | — |
| Apr 8, 2005 | 6 | 4 BR | — | $8,600,000 | — | -3.4% |
The most recent eligible transfer recorded at this building is from 2023. Our records run through September 2026; no later qualifying sale has been recorded here, which for a small or tightly held building is common rather than a gap in the data.
Sources, exclusions and how these figures are computed
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01377-7501). 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 on co-ops is not officially recorded, figures shown are approximate. 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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