Back to 21 East 66th Street building profile
21 East 66th StreetRecorded sales & closing prices
21 East 66th Street, New York, NY 10065
20 recorded closings, 2004–2026. Sortable and searchable below.
- Recorded closings
- 20
- Date range
- 2004–2026
- Median $/sf
- $2,416
- Listing discount
- 8.5%
- Monthly carry/sf
- $3.69
- Price range
- $2.72M – $11.3M
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.
Condominium pricing is read on a price-per-square-foot basis, and 21 East 66th trades as a strong pre-war condominium, with partial-floor two-bedrooms at the entry end and full-floor homes at the top. With only 19 residences and one to two apartments per floor, resale volume is thin and each closing carries weight. When underwriting a purchase or a list price, capture the square footage, the room count, the floor, the exposure, and renovation condition rather than relying on a neighborhood average.
Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
The complete recorded-sale history for 21 East 66th Street, 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 8.5% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy here.
Price per square foot over time
18 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 |
|---|---|---|---|---|---|
| Aug 18, 2026 | 8W | 3 BR · 3.5 BA · 2,000 sf | $5,200,000 | $2,600 | -8.0% |
| Dec 11, 2024 | 6E | 2 BR · 2 BA · 1,400 sf | $3,150,000 | $2,250 | -1.6% |
| Dec 1, 2023 | 2W | 3 BR · 3 BA · 1,906 sf | $3,100,000 | $1,626 | -19.7% |
| Nov 30, 2022 | 3E | 3 BR · 2.5 BA · 1,700 sf | $3,215,362 | $1,891 | -1.1% |
| May 20, 2021 | 8E | 3 BR · 1,700 sf | $3,200,000 | $1,882 | -8.4% |
| Nov 14, 2019 | 2W | 2 BR · 1,903 sf | $2,952,925 | $1,552 | -19.1% |
| Mar 6, 2019 | 5W | 3 BR · 3 BA · 1,906 sf | $4,850,000 | $2,545 | -17.8% |
| Nov 27, 2017 | 7 | 3 BR · 4.5 BA · 3,600 sf | $11,250,000 | $3,125 | -13.1% |
| Oct 30, 2016 | 4W | 1,902 sf | $2,719,400 | $1,430 | — |
| Oct 20, 2016 | 11 | 4 BR · 4.5 BA · 3,675 sf | $9,450,000 | $2,571 | -5.0% |
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 | ||||||
|---|---|---|---|---|---|---|
| Aug 18, 2026 | 8W | 3 BR · 3.5 BA | 2,000 | $5,200,000 | $2,600 | -8.0% |
| Feb 25, 2026 | 6W | non-market transfer (excluded from $/sf & trends) | 2,205 | $1,527,375 | — | — |
| Dec 11, 2024 | 6E | 2 BR · 2 BA | 1,400 | $3,150,000 | $2,250 | -1.6% |
| Dec 1, 2023 | 2W | 3 BR · 3 BA | 1,906 | $3,100,000 | $1,626 | -19.7% |
| Nov 30, 2022 | 3E | 3 BR · 2.5 BA | 1,700 | $3,215,362 | $1,891 | -1.1% |
| May 20, 2021 | 8E | 3 BR | 1,700 | $3,200,000 | $1,882 | -8.4% |
| Nov 14, 2019 | 2W | 2 BR | 1,903 | $2,952,925 | $1,552 | -19.1% |
| Mar 6, 2019 | 5W | 3 BR · 3 BA | 1,906 | $4,850,000 | $2,545 | -17.8% |
| Nov 27, 2017 | 7 | 3 BR · 4.5 BA | 3,600 | $11,250,000 | $3,125 | -13.1% |
| Oct 30, 2016 | 4W | 1,902 | $2,719,400 | $1,430 | — | |
| Oct 20, 2016 | 11 | 4 BR · 4.5 BA | 3,675 | $9,450,000 | $2,571 | -5.0% |
| Nov 30, 2015 | 7EW | 5 BR · 6 BA | 3,600 | $8,330,000 | $2,314 | +0.0% |
| Jun 30, 2015 | 5W | 3 BR · 3 BA | 1,906 | $5,600,000 | $2,938 | -4.8% |
| May 15, 2015 | 8W | 2 BR | 2,000 | $4,900,000 | $2,450 | -1.9% |
| Oct 30, 2014 | 11 | 5 BR | 3,668 | $9,520,637 | $2,596 | -9.3% |
| Apr 10, 2014 | 7E | 5 BR | 3,600 | $8,330,000 | $2,314 | -14.6% |
| Apr 3, 2013 | 5W | 3 BR | 1,902 | $3,900,000 | $2,050 | — |
| Dec 14, 2012 | 9 | 3,667 | $4,500,000 | $1,227 | — | |
| Jun 11, 2012 | 5W | 3 BR | 1,906 | $3,650,000 | $1,915 | -8.6% |
| Apr 26, 2004 | 3W | 2 BR | — | $2,700,000 | — | -10.0% |
Sources, exclusions and how these figures are computed
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01381-7504). 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.
Know what’s fair before you offer — we’ll show you where each line trades, the building’s discount-to-ask pattern, and where the value sits right now.
Price to the building’s real trajectory, not a guess — we’ll position your line against its true comps to maximize the outcome.