Back to Island House building profile
551 Main Street (Island House)Recorded sales & closing prices
551 Main Street, New York, NY 10044
133 recorded transfers, 2015–2026. 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
- 133
- Date range
- 2015–2026
- Median $/sf
- $841
- Listing discount
- 0.0%
- Monthly carry/sf
- $1.21
- Price range
- $354K – $1.7M
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.
Island House is the deepest resale market on Roosevelt Island. ACRIS records several hundred share transfers on the residential unit since the 2015 conversion — a heavy first-year wave of insider closings followed by a steady annual resale flow that continues through the current year. That gives the building something rare in a small submarket: real comparable evidence.
Pricing here reflects a set of adjustments that do not exist on the mainland. Apartments trade at a discount to comparable Upper East Side stock across the channel, and the discount reflects the ground lease term, the PILOT structure, the two-track affordability regime, and the island's single-line transit and tram dependence — not the quality of the apartments, which is often better than the price implies. Within the building, the largest value drivers are exposure, renovation condition, and Affordability Plan status. The pending master lease extension is the most consequential open variable in the building's pricing, and buyers and sellers should both be tracking it. Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.
The complete recorded-sale history for Island House, compiled from NYC Department of Finance transfer records, with apartment-by-apartment detail from The Roebling Research Library.
Price per square foot over time
98 sales with a known square footage, by closing date.
Recent closings
The building’s 10 most recent market sales.
| Date | Unit | Apartment | Price | $/sf | vs. Ask |
|---|---|---|---|---|---|
| Sep 28, 2026 | 1315 | 3 BR · 2.5 BA · 1,600 sf | $1,280,000 | $800 | -12.2% |
| Sep 19, 2026 | 411 | 1 BA | $420,000 | -4.5% | |
| Sep 17, 2026 | 1204 | 2 BR · 1.5 BA · 1,050 sf | $850,000 | $810 | -4.5% |
| Jul 29, 2026 | 1310 | 3 BR · 3 BA · 1,595 sf | $1,395,000 | $875 | +0.0% |
| Jun 2, 2026 | 1002 | 2 BR · 1.5 BA · 1,050 sf | $975,000 | $929 | -2.0% |
| May 4, 2026 | 806 | 1 BR · 1 BA · 803 sf | $675,000 | $841 | +0.0% |
| Mar 9, 2026 | 208 | 2 BR · 2 BA · 1,181 sf | $820,000 | $694 | -14.6% |
| Mar 4, 2026 | 903 | $915,000 | — | ||
| Feb 26, 2026 | 1713 | 3 BR · 2 BA · 1,595 sf | $1,350,000 | $846 | +0.0% |
| Nov 25, 2025 | 909 | 3 BR · 2.5 BA · 1,656 sf | $1,490,000 | $900 | +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. Showing the 24 strongest of 27 repeat-trade lines; sort the table below by Unit to see every line’s full history.
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 | ||||||
|---|---|---|---|---|---|---|
| Sep 28, 2026 | 1315 | 3 BR · 2.5 BA | 1,600 | $1,280,000 | $800 | -12.2% |
| Sep 19, 2026 | 411 | 1 BA | — | $420,000 | — | -4.5% |
| Sep 17, 2026 | 1204 | 2 BR · 1.5 BA | 1,050 | $850,000 | $810 | -4.5% |
| Jul 29, 2026 | 1310 | 3 BR · 3 BA | 1,595 | $1,395,000 | $875 | +0.0% |
| Jun 2, 2026 | 1002 | 2 BR · 1.5 BA | 1,050 | $975,000 | $929 | -2.0% |
| May 4, 2026 | 806 | 1 BR · 1 BA | 803 | $675,000 | $841 | +0.0% |
| Mar 9, 2026 | 208 | 2 BR · 2 BA | 1,181 | $820,000 | $694 | -14.6% |
| Mar 4, 2026 | 903 | — | $915,000 | — | — | |
| Feb 26, 2026 | 1713 | 3 BR · 2 BA | 1,595 | $1,350,000 | $846 | +0.0% |
| Nov 25, 2025 | 909 | 3 BR · 2.5 BA | 1,656 | $1,490,000 | $900 | +0.0% |
| Nov 18, 2025 | 605 | 2 BR · 2 BA | 1,137 | $970,000 | $853 | -7.5% |
| Oct 27, 2025 | 602 | 2 BR · 2 BA | 1,053 | $770,000 | $731 | -9.4% |
| Oct 22, 2025 | 1707 | 2 BR · 1.5 BA | 1,053 | $875,000 | $831 | -11.7% |
| Jul 30, 2025 | 509 | 3 BR · 3 BA | 1,656 | $1,395,000 | $842 | +0.0% |
| Jul 24, 2025 | 1701 | 1 BR · 1 BA | 803 | $675,000 | $841 | +0.0% |
| Jul 8, 2025 | 1101 | 1 BR · 1 BA | 803 | $610,000 | $760 | -2.4% |
| Jun 4, 2025 | 1114 | 3 BR · 2.5 BA | 1,656 | $1,375,528 | $831 | +0.0% |
| May 15, 2025 | 604 | 2 BR · 2 BA | 1,137 | $1,012,000 | $890 | +0.0% |
| May 1, 2025 | 1312 | 3 BR · 2.5 BA | 1,603 | $1,250,000 | $780 | -7.4% |
| Mar 13, 2025 | RES | — | $600,000 | — | — | |
| Oct 15, 2024 | 218 | 4 BR · 2.5 BA | 1,700 | $1,330,216 | $782 | — |
| Aug 6, 2024 | 1602 | 2 BR · 1.5 BA | — | $887,870 | — | +0.0% |
| May 8, 2024 | 1607 | 2 BR · 1.5 BA | — | $850,595 | — | +0.0% |
| Jun 13, 2023 | 502 | 2 BR · 1.5 BA | — | $715,653 | — | +0.0% |
| Jan 18, 2023 | 1111 | 1 BA | — | $430,000 | — | -4.2% |
| Oct 12, 2022 | 314 | 3 BR · 3 BA | 1,500 | $1,449,000 | $966 | +0.0% |
| Sep 28, 2022 | 1507 | — | $784,433 | — | — | |
| Sep 14, 2022 | 1311 | 1 BA | — | $449,000 | — | -2.2% |
| Jun 28, 2022 | 301 | — | $615,000 | — | — | |
| Jun 13, 2022 | 608 | 1 BR · 1 BA | 803 | $467,961 | $583 | +0.0% |
| Apr 24, 2022 | 208 | 2 BR · 2 BA | 1,181 | $899,000 | $761 | +0.0% |
| Apr 18, 2022 | 1401 | 1 BR · 1 BA | — | $551,507 | — | +0.0% |
| Apr 14, 2022 | 603 | 1 BR · 1 BA | 803 | $617,500 | $769 | -2.8% |
| Apr 4, 2022 | 1314 | 3 BR · 2.5 BA | 1,656 | $1,127,337 | $681 | +0.0% |
| Mar 29, 2022 | 712A | 3 BR · 2.5 BA | — | $1,125,000 | — | -10.0% |
| Mar 28, 2022 | 1115 | 3 BR · 2.5 BA | 1,603 | $1,295,000 | $808 | +0.0% |
| Nov 16, 2021 | 506 | 1 BR · 1 BA | 803 | $630,000 | $785 | +0.0% |
| Oct 14, 2021 | 801 | 1 BR · 1 BA | 803 | $522,424 | $651 | +0.0% |
| Sep 24, 2021 | 1107 | 2 BR · 1.5 BA | 950 | $642,984 | $677 | +0.0% |
| Sep 20, 2021 | 401 | 1 BR · 1 BA | 803 | $437,292 | $545 | +0.0% |
| Sep 9, 2021 | 1103 | — | $704,321 | — | — | |
| Aug 12, 2021 | 714 | 3 BR · 3 BA | 1,656 | $1,310,000 | $791 | -9.3% |
| Jul 28, 2021 | 1511 | 1 BA | 596 | $460,000 | $772 | +0.0% |
| Jun 23, 2021 | 1113 | 3 BR · 2.5 BA | — | $1,100,000 | — | -8.3% |
| Jun 14, 2021 | 1514 | 3 BR | 1,656 | $1,375,000 | $830 | +0.0% |
| Jun 2, 2021 | 509 | 3 BR · 3 BA | 1,656 | $1,275,000 | $770 | +0.0% |
| Apr 27, 2021 | 1411 | 1 BA | 596 | $425,000 | $713 | -10.3% |
| Mar 29, 2021 | 908 | 1 BR · 1 BA | 803 | $448,102 | $558 | +0.0% |
| Jan 22, 2021 | 501 | 1 BR · 1 BA | 803 | $431,378 | $537 | +0.0% |
| Nov 10, 2020 | 1313 | 3 BR · 2.5 BA | 1,595 | $1,285,000 | $806 | +0.0% |
| Oct 20, 2020 | 1106 | 1 BR · 1 BA | 803 | $499,750 | $622 | +0.0% |
| Apr 5, 2020 | 1312 | 3 BR · 2.5 BA | — | $1,275,000 | — | — |
| Mar 23, 2020 | 912 | 3 BR · 2.5 BA | — | $1,199,000 | — | +0.0% |
| Mar 23, 2020 | 314 | 3 BR · 3 BA | 1,656 | $1,325,000 | $800 | +0.0% |
| Mar 2, 2020 | 710 | 3 BR · 2.5 BA | — | $1,250,000 | — | +0.0% |
| Nov 9, 2019 | 203 | 4 BR · 2.5 BA | — | $1,700,000 | — | +0.0% |
| Sep 28, 2019 | 703 | 1 BR · 1 BA | 803 | $620,000 | $772 | -0.8% |
| Jul 10, 2019 | 1110 | 3 BR · 2.5 BA | — | $1,265,000 | — | +0.0% |
| Jun 16, 2019 | 411 | 1 BA | — | $430,000 | — | +0.0% |
| Mar 1, 2019 | 1811 | — | $420,000 | — | — | |
| Mar 1, 2019 | 1811 | 1 BA | 596 | $430,000 | $721 | -13.8% |
| Jan 18, 2019 | 408 | 1 BR · 1 BA | 803 | $369,456 | $460 | -0.1% |
| Jul 9, 2018 | 1914 | 3 BR · 3 BA | 1,656 | $1,595,000 | $963 | +0.0% |
| May 18, 2018 | 804 | 2 BR · 2 BA | — | $1,100,000 | — | +0.0% |
| May 4, 2018 | 715 | 3 BR · 2.5 BA | 1,603 | $1,350,000 | $842 | +0.0% |
| May 2, 2018 | 513 | 3 BR · 2.5 BA | 1,603 | $1,175,000 | $733 | -8.0% |
| Mar 6, 2018 | 1711 | 1 BA | — | $456,000 | — | -6.7% |
| Jan 25, 2018 | 1807 | 2 BR · 2 BA | — | $895,000 | — | -8.5% |
| Jan 11, 2018 | 1004 | 2 BR · 2 BA | 1,137 | $1,124,129 | $989 | +8.6% |
| Oct 24, 2017 | 204 | 4 BR · 2.5 BA | 1,782 | $1,675,000 | $940 | -4.3% |
| Oct 6, 2017 | 602 | 2 BR · 2 BA | 1,053 | $799,000 | $759 | +0.0% |
| Aug 1, 2017 | 604 | 2 BR · 2 BA | 1,137 | $1,020,000 | $897 | +0.0% |
| Jul 31, 2017 | 1802 | 2 BR · 2 BA | 1,053 | $980,000 | $931 | +0.5% |
| Jul 24, 2017 | 1202 | 2 BR · 2 BA | 1,053 | $845,000 | $802 | +0.0% |
| Jul 6, 2017 | 804 | 2 BR · 2 BA | 1,107 | $1,020,000 | $921 | -1.0% |
| Jun 27, 2017 | 1508 | 1 BR · 1 BA | 803 | $615,000 | $766 | +0.0% |
| Jun 19, 2017 | 1208 | 1 BR · 1 BA | 803 | $660,225 | $822 | +9.1% |
| May 30, 2017 | 712 | 3 BR · 2.5 BA | 1,603 | $1,165,000 | $727 | +0.0% |
| Apr 18, 2017 | 102 | 2 BR · 2 BA | 1,053 | $715,000 | $679 | +0.0% |
| Apr 18, 2017 | 102 | 2 BR · 2 BA | 1,053 | $787,938 | $748 | +10.2% |
| Apr 13, 2017 | 1701 | 1 BR · 1 BA | 803 | $655,000 | $816 | +0.0% |
| Apr 7, 2017 | 107 | 2 BR · 2 BA | — | $720,000 | — | +0.0% |
| Apr 5, 2017 | 106 | 1 BR · 1 BA | — | $528,600 | — | +0.0% |
| Mar 30, 2017 | 606 | 2 BR · 2 BA | — | $835,000 | — | +0.0% |
| Mar 29, 2017 | 1608 | 1 BR · 1 BA | 803 | $652,000 | $812 | +0.3% |
| Mar 24, 2017 | 202 | 2 BR · 2 BA | — | $750,000 | — | +0.0% |
| Mar 21, 2017 | 107 | 2 BR · 2 BA | — | $720,000 | — | — |
| Mar 15, 2017 | 207 | 2 BR · 2 BA | 1,053 | $735,000 | $698 | +0.0% |
| Feb 27, 2017 | 1811 | 1 BA | 596 | $465,000 | $780 | +0.0% |
| Feb 27, 2017 | 1811 | 1 BA | 596 | $420,000 | $705 | -9.7% |
| Feb 9, 2017 | 1511 | 1 BA | 596 | $445,000 | $747 | +0.0% |
| Feb 1, 2017 | 1101 | 1 BR · 1 BA | 803 | $670,825 | $835 | +9.1% |
| Jan 18, 2017 | 1108 | 1 BR · 1 BA | 803 | $595,000 | $741 | +0.0% |
| Jan 5, 2017 | 1402 | 2 BR · 2 BA | 1,053 | $850,000 | $807 | +0.0% |
| Jan 4, 2017 | 702 | 2 BR · 2 BA | 1,053 | $765,000 | $726 | +1.3% |
| Dec 29, 2016 | 1002 | 2 BR · 1 BA | — | $785,000 | — | — |
| Dec 14, 2016 | 602 | 2 BR · 2 BA | 1,053 | $755,000 | $717 | +2.7% |
| Dec 12, 2016 | 103 | 2 BR · 2 BA | 1,053 | $715,000 | $679 | +0.0% |
| Dec 8, 2016 | 1002 | 2 BR · 1 BA | — | $785,000 | — | — |
| Dec 5, 2016 | 311 | 1 BA | 596 | $389,000 | $653 | +0.0% |
| Nov 28, 2016 | 714 | 3 BR · 3 BA | 1,656 | $1,395,000 | $842 | +0.0% |
| Nov 21, 2016 | 701 | 1 BR · 1 BA | 803 | $575,000 | $716 | +19.9% |
| Nov 17, 2016 | 1003 | 1 BR · 1 BA | 803 | $575,000 | $716 | +0.0% |
| Nov 10, 2016 | 910 | 3 BR · 2 BA | 1,595 | $1,245,000 | $781 | +0.0% |
| Oct 24, 2016 | 1101 | 1 BR · 1 BA | 803 | $549,000 | $684 | +0.0% |
| Oct 5, 2016 | 1111 | 1 BA | 596 | $410,000 | $688 | +0.0% |
| Oct 4, 2016 | 1411 | 1 BA | 596 | $440,000 | $738 | +0.0% |
| Sep 21, 2016 | 1611 | 1 BA | — | $440,000 | — | +0.0% |
| Sep 7, 2016 | 1105 | 2 BR · 2 BA | 1,107 | $1,040,000 | $939 | +0.0% |
| Aug 21, 2016 | 1910 | 3 BR · 2 BA | 1,595 | $1,300,000 | $815 | +0.0% |
| Jul 28, 2016 | 1611 | 1 BA | — | $440,000 | — | — |
| Jul 19, 2016 | 1711 | 1 BA | 596 | $459,000 | $770 | +0.0% |
| Jul 18, 2016 | 1103 | 1 BR · 1 BA | 803 | $585,000 | $729 | +0.0% |
| Jul 18, 2016 | 605 | 2 BR · 2 BA | 1,137 | $995,000 | $875 | +14.5% |
| Jul 18, 2016 | 911 | 1 BA | 596 | $354,000 | $594 | +0.0% |
| May 26, 2016 | 1113 | 3 BR · 2 BA | 1,595 | $1,125,000 | $705 | +0.0% |
| May 19, 2016 | 1311 | 1 BA | 596 | $415,000 | $696 | +0.0% |
| Apr 28, 2016 | 602 | 2 BR · 2 BA | 1,053 | $785,000 | $745 | -0.5% |
| Apr 27, 2016 | 901 | 1 BR · 1 BA | 803 | $540,000 | $672 | +4.9% |
| Apr 27, 2016 | 1307 | 2 BR · 2 BA | 1,053 | $795,000 | $755 | +0.0% |
| Apr 25, 2016 | 306 | 1 BR · 1 BA | 803 | $479,000 | $597 | +0.0% |
| Apr 25, 2016 | 306 | 1 BR · 1 BA | 803 | $527,147 | $656 | +10.1% |
| Apr 21, 2016 | 301 | 1 BR · 1 BA | 813 | $469,000 | $577 | +0.0% |
| Apr 19, 2016 | 703 | 1 BR · 1 BA | 803 | $541,000 | $674 | +1.1% |
| Apr 7, 2016 | 905 | 2 BR · 2 BA | — | $899,000 | — | +0.0% |
| Mar 30, 2016 | 708 | 1 BR · 1 BA | 803 | $558,000 | $695 | +0.0% |
| Mar 28, 2016 | 515 | 3 BR · 2 BA | 1,603 | $1,150,000 | $717 | +0.0% |
| Mar 10, 2016 | 1811 | 1 BA | 596 | $392,900 | $659 | +0.0% |
| Mar 8, 2016 | 909 | 3 BR · 2 BA | 1,656 | $1,007,000 | $608 | +0.0% |
| Mar 7, 2016 | 804 | 2 BR · 2 BA | 1,137 | $823,000 | $724 | +5.0% |
| Mar 3, 2016 | 903 | 2 BR · 2 BA | 1,053 | $780,000 | $741 | +11.2% |
| Feb 25, 2016 | 406 | 2 BR · 2 BA | 1,053 | $699,000 | $664 | +0.0% |
| Jul 20, 2015 | 603 | 1 BR · 1 BA | 803 | $530,000 | $660 | +0.0% |
Sources, exclusions and how these figures are computed
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01373-7505). 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.
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