Gemstone CondominiumRecorded sales & closing prices
348 East 89th Street, between First and Second avenues · Upper East Side
17 recorded closings, 2003–2026. Sortable and searchable below.
- Recorded closings
- 17
- Date range
- 2003–2026
- Median $/sf
- $1,101
- Listing discount
- 0.0%
- Monthly carry/sf
- $2.51
- Price range
- $240K – $1.16M
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. This standardized trend is a separate series from the latest median above, which is the raw recorded sales. (2022 marks the rate-shock inflection.) Like-for-like repeat-sale figures to follow.
The complete recorded-sale history for Gemstone Condominium, compiled from NYC Department of Finance transfer records, with apartment-by-apartment detail from The Roebling Research Library.
Price per square foot over time
13 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 |
|---|---|---|---|---|---|
| Jan 28, 2026 | 6 | 1 BR · 636 sf | $700,000 | $1,101 | — |
| Jan 22, 2026 | 9W | 2 BR · 2 BA | $860,000 | -6.0% | |
| Dec 27, 2021 | 9E | 1 BR · 1 BA · 533 sf | $713,000 | $1,338 | +0.0% |
| Feb 6, 2018 | 1E | 2 BR · 2 BA · 666 sf | $1,162,500 | $1,745 | -10.6% |
| Oct 3, 2017 | 9E | 1 BR · 533 sf | $649,000 | $1,218 | -7.2% |
| Sep 26, 2016 | 1E | 2 BR · 2 BA · 655 sf | $650,000 | $992 | — |
| Jun 13, 2016 | 4 | 1 BR · 1 BA | $690,000 | +0.0% | |
| Jun 21, 2013 | 10 | 1 BR | $480,000 | -3.8% | |
| Oct 15, 2012 | 9W | 2 BR · 623 sf | $625,000 | $1,003 | — |
| Dec 4, 2009 | PH9E | 1 BR · 533 sf | $569,000 | $1,068 | — |
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 | ||||||
|---|---|---|---|---|---|---|
| Jan 28, 2026 | 6 | 1 BR | 636 | $700,000 | $1,101 | — |
| Jan 22, 2026 | 9W | 2 BR · 2 BA | — | $860,000 | — | -6.0% |
| Dec 27, 2021 | 9E | 1 BR · 1 BA | 533 | $713,000 | $1,338 | +0.0% |
| Feb 6, 2018 | 1E | 2 BR · 2 BA | 666 | $1,162,500 | $1,745 | -10.6% |
| Oct 3, 2017 | 9E | 1 BR | 533 | $649,000 | $1,218 | -7.2% |
| Sep 26, 2016 | 1E | 2 BR · 2 BA | 655 | $650,000 | $992 | — |
| Jun 13, 2016 | 4 | 1 BR · 1 BA | — | $690,000 | — | +0.0% |
| Jun 21, 2013 | 10 | 1 BR | — | $480,000 | — | -3.8% |
| Oct 15, 2012 | 9W | 2 BR | 623 | $625,000 | $1,003 | — |
| Dec 4, 2009 | PH9E | 1 BR | 533 | $569,000 | $1,068 | — |
| Dec 4, 2009 | 9E | 1 BR⚑ Flagged for review — recorded 675 sf disagrees with this line's 533 sf across other sales — the square footage looks mis-recorded; pending manual review | 675 | $569,000 | $843 | — |
| Dec 1, 2008 | 6 | 1 BR | 636 | $500,000 | $786 | +0.0% |
| Mar 16, 2007 | 10 | 1 BR | 565 | $508,000 | $899 | +1.8% |
| Dec 18, 2006 | 9E | 1 BR | 533 | $589,000 | $1,105 | — |
| Dec 30, 2004 | 3W | 380 | $299,000 | $787 | +0.0% | |
| Sep 14, 2004 | 9W | 2 BR | 700 | $605,000 | $864 | +1.7% |
| Nov 5, 2003 | 3W | 380 | $240,000 | $632 | — |
Sources, exclusions and how these figures are computed
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01551-7501). 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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