Back to The Hardenbrook House Condominium building profile
404 East 66th StreetRecorded sales & closing prices
404 East 66th Street, New York, NY 10065
111 recorded closings, 2004–2026. Sortable and searchable below.
- Recorded closings
- 111
- Date range
- 2004–2026
- Median $/sf
- $891
- Listing discount
- 3.2%
- Monthly carry/sf
- $1.88
- Price range
- $250K – $2.13M
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.
As a condominium, 404 East 66th Street trades on a price-per-square-foot basis rather than the price-per-room framing used for co-ops. Pricing here reflects three durable factors: the far-east Lenox Hill location, which sits at a discount to the Park-and-Fifth blocks; the condominium tenure, which typically commands a premium over comparable co-op stock because of financing and subletting flexibility; and the building's postwar layouts, which favor efficient studio-through-two-bedroom configurations over grand prewar proportions.
Buyers should expect per-square-foot values below the trophy condominium corridor and generally in line with, or modestly above, the full-service co-op inventory nearby — with the condo structure and permissive subletting supporting resale liquidity and investor demand. Specific closed prices move with unit line, floor, light, and condition, and should be underwritten against current recorded transfers rather than headline averages.
The complete recorded-sale history for The Hardenbrook House Condominium, 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 3.2% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy here.
Price per square foot over time
95 sales with a known square footage, by closing date.
The vertical premium
The climb in price per square foot as you rise through the building — light and views included, time-adjusted to today’s market.
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 |
|---|---|---|---|---|---|
| Mar 16, 2026 | 1G | 1 BR · 1 BA · 877 sf | $770,000 | $878 | -3.1% |
| May 21, 2025 | 7C | 500 sf | $620,000 | $1,240 | -4.5% |
| Mar 11, 2025 | 2B | 1 BA · 560 sf | $560,000 | $1,000 | +0.0% |
| Feb 28, 2025 | 3H | 874 sf | $650,000 | $744 | — |
| Dec 18, 2024 | 2A | 1 BR · 1 BA · 721 sf | $690,000 | $957 | -5.3% |
| Oct 21, 2024 | 6H | 1 BR · 1 BA · 875 sf | $795,000 | $909 | -11.2% |
| Sep 20, 2024 | 4D | $3,702,534 | — | ||
| Jun 28, 2024 | 4N | 1 BR · 1 BA · 700 sf | $700,000 | $1,000 | -7.9% |
| Jun 26, 2024 | 4E | 2 BR · 2 BA · 1,200 sf | $1,300,000 | $1,083 | -13.0% |
| Jun 25, 2024 | 1F | 1 BA · 551 sf | $499,000 | $906 | +0.0% |
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 | ||||||
|---|---|---|---|---|---|---|
| Mar 16, 2026 | 1G | 1 BR · 1 BA | 877 | $770,000 | $878 | -3.1% |
| May 21, 2025 | 7C | 500 | $620,000 | $1,240 | -4.5% | |
| Mar 11, 2025 | 2B | 1 BA | 560 | $560,000 | $1,000 | +0.0% |
| Feb 28, 2025 | 3H | 874 | $650,000 | $744 | — | |
| Dec 18, 2024 | 2A | 1 BR · 1 BA | 721 | $690,000 | $957 | -5.3% |
| Oct 21, 2024 | 6H | 1 BR · 1 BA | 875 | $795,000 | $909 | -11.2% |
| Sep 20, 2024 | 4D | — | $3,702,534 | — | — | |
| Jun 28, 2024 | 4N | 1 BR · 1 BA | 700 | $700,000 | $1,000 | -7.9% |
| Jun 26, 2024 | 4E | 2 BR · 2 BA | 1,200 | $1,300,000 | $1,083 | -13.0% |
| Jun 25, 2024 | 1F | 1 BA | 551 | $499,000 | $906 | +0.0% |
| May 28, 2024 | 10E | 2 BR · 2 BA | 1,180 | $1,515,000 | $1,284 | -2.3% |
| Oct 31, 2023 | 8D | 1 BR | 880 | $873,000 | $992 | -8.1% |
| Sep 15, 2023 | 6R | 1 BA | 500 | $528,000 | $1,056 | -11.9% |
| Mar 20, 2023 | 3P | 1 BR · 1 BA | 720 | $725,000 | $1,007 | -3.2% |
| Mar 16, 2023 | 10E | 2 BR | — | $1,140,000 | — | -8.8% |
| Feb 24, 2023 | 1B | 560 | $515,000 | $920 | — | |
| Dec 16, 2022 | 7E | 2 BR · 2 BA | 1,180 | $1,225,000 | $1,038 | -2.0% |
| Dec 7, 2022 | 4G | 3 BR · 2 BA | 1,196 | $1,475,000 | $1,233 | -6.3% |
| Aug 17, 2022 | 2G | 2 BRnon-market transfer (excluded from $/sf & trends) | 1,196 | $299,000 | — | — |
| Jul 19, 2022 | 12H | 1 BA | 600 | $610,000 | $1,017 | -2.4% |
| May 26, 2022 | 5H | 1 BR · 1 BA | 875 | $820,000 | $937 | -3.5% |
| Apr 11, 2022 | 12J | 1 BR · 1 BA | 732 | $890,000 | $1,216 | -1.1% |
| Mar 16, 2022 | 6D | 1 BR · 1 BA | 888 | $839,900 | $946 | +0.0% |
| Feb 9, 2022 | 6D | 1 BR · 1 BA | 888 | $832,500 | $938 | — |
| Dec 23, 2021 | 11GH | 2 BR · 2 BA | 1,360 | $2,125,000 | $1,563 | -5.6% |
| Oct 12, 2021 | 12J | 1 BR · 1 BA | 732 | $670,000 | $915 | — |
| Sep 17, 2021 | 6P | 1 BR · 1 BA | 720 | $720,000 | $1,000 | -9.9% |
| May 12, 2021 | 9F | 1 BR · 1 BA | 914 | $950,000 | $1,039 | -4.5% |
| May 10, 2021 | J7 | 1 BA | 537 | $580,000 | $1,080 | -2.5% |
| Mar 25, 2021 | 6E | 2 BR · 2 BA | 1,180 | $1,375,000 | $1,165 | -12.7% |
| May 18, 2020 | 6A | 1 BR | — | $850,000 | — | -2.9% |
| May 6, 2020 | 9G | 1,196 | $1,450,000 | $1,212 | — | |
| Jan 25, 2020 | 6D | 1 BR · 1 BAnon-market transfer (excluded from $/sf & trends) | 888 | $560,064 | — | — |
| Jan 23, 2020 | 1M | 1 BA | — | $465,000 | — | -3.1% |
| Dec 10, 2019 | 6E | 2 BR · 2 BA | 1,180 | $1,400,000 | $1,186 | — |
| Oct 25, 2019 | 6F | 1 BR · 1 BA | — | $950,000 | — | -2.0% |
| Aug 2, 2019 | 7J | 1 BA | 537 | $580,000 | $1,080 | -16.5% |
| Jul 24, 2019 | 5J | 1 BA | — | $639,000 | — | -1.7% |
| Apr 9, 2019 | 2E | 2 BR · 2 BA | 1,180 | $1,450,000 | $1,229 | -3.0% |
| Aug 17, 2018 | 11A | 1 BR | 750 | $855,000 | $1,140 | -4.9% |
| May 23, 2018 | 3K | 550 | $665,000 | $1,209 | -2.1% | |
| Jan 18, 2018 | 2E | 2 BR · 2 BA | 275 | $950,000 | $3,455 | — |
| Oct 11, 2017 | 10J | 1 BA | — | $685,000 | — | -2.0% |
| Jul 6, 2017 | 10D | 1 BR | 888 | $861,000 | $970 | -1.6% |
| Jun 28, 2017 | 10F | 1 BR · 1 BA | 914 | $980,000 | $1,072 | -1.5% |
| May 11, 2017 | 12B | 518 | $653,000 | $1,261 | -1.8% | |
| Jan 11, 2017 | 6M | 1 BA | 458 | $510,000 | $1,114 | -8.6% |
| Sep 27, 2016 | 4G | 3 BR · 2 BA | 1,196 | $1,232,082 | $1,030 | — |
| May 31, 2016 | PHA | 850 | $1,058,980 | $1,246 | — | |
| May 2, 2016 | 12D | 1,127 | $1,300,000 | $1,154 | — | |
| Nov 23, 2015 | 2G | 2 BR | 1,200 | $1,325,000 | $1,104 | -8.6% |
| May 4, 2015 | 2N | 1 BR | 700 | $699,000 | $999 | +0.0% |
| Apr 3, 2015 | 12B | 1 BA | 518 | $575,000 | $1,110 | -5.7% |
| Dec 9, 2014 | 5F | 1 BR · 1 BA | 914 | $950,000 | $1,039 | -4.5% |
| Nov 12, 2014 | 4R | 450 | $350,000 | $778 | — | |
| Oct 30, 2014 | 12G | 1 BR · 1 BA | — | $725,000 | — | -3.2% |
| Jun 5, 2014 | 12H | — | $575,000 | — | -5.7% | |
| Apr 30, 2014 | 12A | 1 BR · 1 BA | 720 | $717,000 | $996 | +0.3% |
| Mar 13, 2014 | 10L | 1 BR | 750 | $730,000 | $973 | -2.5% |
| Jan 28, 2014 | 5N | 1 BR · 1 BA | 700 | $650,000 | $929 | -6.5% |
| Jul 31, 2013 | 3K | 550 | $540,000 | $982 | +0.0% | |
| Apr 17, 2013 | 2J | 536 | $470,000 | $877 | — | |
| Jul 20, 2012 | 10K | 1 BR | 553 | $535,000 | $967 | +0.0% |
| Jun 8, 2012 | 3J | 537 | $460,000 | $857 | -2.1% | |
| Feb 10, 2012 | 6B | 560 | $404,586 | $722 | — | |
| Dec 13, 2011 | 7H | 2 BR | 875 | $740,000 | $846 | -6.9% |
| Aug 18, 2011 | 7E | 2 BR · 2 BA | 1,180 | $950,000 | $805 | — |
| Aug 10, 2011 | 7F | 914 | $500,000 | $547 | — | |
| Mar 24, 2011 | 2N | 1 BR | 700 | $530,000 | $757 | -6.2% |
| Mar 18, 2011 | 5P | 711 | $450,000 | $633 | — | |
| Feb 3, 2011 | 9D | 1 BR | 900 | $720,000 | $800 | -2.6% |
| Jan 28, 2011 | 9H | 1 BR | 875 | $715,000 | $817 | -4.5% |
| Jun 17, 2010 | 5R | 500 | $380,000 | $760 | -3.8% | |
| Jun 7, 2010 | 3P | 1 BR | 700 | $460,000 | $657 | -1.9% |
| May 12, 2010 | 10H | 1 BR | 900 | $675,000 | $750 | -2.9% |
| Apr 9, 2010 | 6N | 702 | $250,000 | $356 | — | |
| Feb 22, 2010 | 7D | 888 | $650,000 | $732 | — | |
| Oct 19, 2009 | 6H | 1 BR | 900 | $700,000 | $778 | -6.0% |
| Jul 8, 2009 | 10C | 537 | $425,000 | $791 | — | |
| Feb 5, 2009 | 10J | 1 BA | 536 | $420,000 | $784 | — |
| Oct 7, 2008 | 11A | 1 BR | 721 | $765,000 | $1,061 | — |
| Jun 5, 2008 | 3M | 460 | $470,000 | $1,022 | -5.8% | |
| Feb 19, 2008 | 5A | 1 BR | 730 | $640,000 | $877 | -5.7% |
| Feb 6, 2008 | 12H | — | $535,000 | — | -1.8% | |
| Jan 28, 2008 | 11D | 2 BR | 1,200 | $1,345,000 | $1,121 | -3.6% |
| Oct 24, 2007 | 7R | 450 | $460,000 | $1,022 | — | |
| Aug 28, 2007 | 3K | 550 | $560,000 | $1,018 | -4.3% | |
| Jun 29, 2007 | 10L | 1 BR | 735 | $625,000 | $850 | — |
| Jun 28, 2007 | 5F | 1 BR | 914 | $875,000 | $957 | -0.5% |
| Feb 7, 2007 | 7H | 2 BR | 875 | $770,000 | $880 | -3.6% |
| Jan 17, 2007 | 10K | 1 BR | 553 | $512,000 | $926 | -3.2% |
| Sep 5, 2006 | 7H | 2 BR | 874 | $770,000 | $881 | — |
| Aug 16, 2006 | 2A | 1 BR | 750 | $629,000 | $839 | -4.6% |
| Jul 6, 2006 | 1M | 500 | $440,000 | $880 | -2.2% | |
| Jun 28, 2006 | 5F | 1 BRnon-market transfer (excluded from $/sf & trends) | 914 | $227,500 | — | — |
| May 24, 2006 | 11GH | 2 BR | 1,550 | $1,995,000 | $1,287 | +0.0% |
| Apr 25, 2006 | 11G | — | $1,875,000 | — | — | |
| Jul 29, 2005 | 4C | 1 BA | 500 | $450,000 | $900 | +20.0% |
| Jul 7, 2005 | 3J | 536 | $500,000 | $933 | — | |
| Jul 6, 2005 | 2N | 1 BR | 702 | $612,500 | $873 | — |
| Jun 30, 2005 | 11B | 1 BA | 518 | $545,000 | $1,052 | — |
| Jun 27, 2005 | 3D | 2 BR | 900 | $725,000 | $806 | +3.7% |
| May 5, 2005 | 11C | 1 BR | 823 | $750,000 | $911 | -2.5% |
| Apr 15, 2005 | 7R | — | $357,000 | — | -3.3% | |
| Nov 10, 2004 | 3D | 2 BR | 900 | $650,000 | $722 | -1.4% |
| Nov 3, 2004 | 7A | 1 BR | 750 | $549,000 | $732 | -3.5% |
| Oct 29, 2004 | 11B | 1 BA | 518 | $450,000 | $869 | — |
| Sep 21, 2004 | 6H | 1 BR | 874 | $550,000 | $629 | — |
| Aug 31, 2004 | 6M | 458 | $340,000 | $742 | -2.9% | |
| Apr 7, 2004 | 1N | 1 BR | 703 | $410,000 | $583 | +2.8% |
| Apr 5, 2004 | 12B | 1 BA | 518 | $333,000 | $643 | -11.2% |
Sources, exclusions and how these figures are computed
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01460-7501). 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.
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.