- Recorded closings
- 58
- Date range
- 2006–2026
- Median $/sf
- $1,584
- Listing discount
- 0.0%
- Monthly carry/sf
- $2.27
- Price range
- $3.11M – $9.8M
Change in the building’s median $/sf over each window, adjusted to a constant-quality (average-floor) unit so it reflects price — not which floors happened to sell. (2022 marks the rate-shock inflection.) Like-for-like repeat-sale figures to follow.
Sales at Altair 18 are best read on a condominium basis — on price per square foot and on apartment-specific configuration. The building sits in the upper tier of Flatiron / Ladies' Mile boutique loft condo pricing, reflecting the size and quality of the loft homes, the full-service amenity package, the historic-district location, and the developer pedigree of the conversion. The building's larger loft homes have transacted in the mid-to-high seven figures, and its penthouse tier has reached into eight figures.
Value tracks the usual condo variables — floor, exposure, light, ceiling height, square footage, layout, and finish condition — with the loft-and-historic-district premium attaching to the larger, better-lit, well-finished homes. Because the building is small, in-building comparable sales are episodic; pricing any individual apartment requires reading both in-building history and the broader Flatiron loft condo market. Recent specific transactions should be confirmed against current public records at the time of any inquiry.
The complete recorded-sale history for Altair 18, compiled from NYC Department of Finance transfer records and verified listing data, then enriched apartment-by-apartment by The Roebling Team research desk.
Price per square foot over time
56 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 |
|---|---|---|---|---|---|
| Jun 30, 2026 | 9B | 4 BR · 3.5 BA · 3,300 sf | $5,300,000 | $1,606 | -1.8% |
| Feb 8, 2023 | 6A | 3 BR · 3 BA · 3,007 sf | $3,950,000 | $1,314 | -14.0% |
| Nov 10, 2022 | 2A | 3 BR · 3 BA · 2,794 sf | $3,550,000 | $1,271 | — |
| Jul 6, 2021 | A | 3 BR · 3 BA · 3,007 sf | $5,300,000 | $1,763 | -3.6% |
| Jul 1, 2021 | 11A | 3 BR · 3 BA · 3,007 sf | $5,300,000 | $1,763 | -3.6% |
| Jul 1, 2021 | 9A | 3 BR · 3 BA · 3,007 sf | $4,725,000 | $1,571 | -5.4% |
| Jun 17, 2021 | 7A | 3 BR · 3 BA · 3,007 sf | $4,550,000 | $1,513 | -7.0% |
| Jun 7, 2021 | 2B | 4 BR · 3.5 BA · 3,292 sf | $4,455,000 | $1,353 | -6.2% |
| May 5, 2021 | 3A | 3 BR · 2.5 BA · 3,007 sf | $3,850,000 | $1,280 | -8.9% |
| Feb 26, 2021 | PH12AB | 5 BR · 5.5 BA · 6,733 sf | $9,800,000 | $1,456 | -2.0% |
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 | ||||||
|---|---|---|---|---|---|---|
| Jun 30, 2026 | 9B | 4 BR · 3.5 BA | 3,300 | $5,300,000 | $1,606 | -1.8% |
| Feb 8, 2023 | 6A | 3 BR · 3 BA | 3,007 | $3,950,000 | $1,314 | -14.0% |
| Nov 10, 2022 | 2A | 3 BR · 3 BA | 2,794 | $3,550,000 | $1,271 | — |
| Jul 6, 2021 | A | 3 BR · 3 BA | 3,007 | $5,300,000 | $1,763 | -3.6% |
| Jul 1, 2021 | 11A | 3 BR · 3 BA | 3,007 | $5,300,000 | $1,763 | -3.6% |
| Jul 1, 2021 | 9A | 3 BR · 3 BA | 3,007 | $4,725,000 | $1,571 | -5.4% |
| Jun 17, 2021 | 7A | 3 BR · 3 BA | 3,007 | $4,550,000 | $1,513 | -7.0% |
| Jun 7, 2021 | 2B | 4 BR · 3.5 BA | 3,292 | $4,455,000 | $1,353 | -6.2% |
| May 5, 2021 | 3A | 3 BR · 2.5 BA | 3,007 | $3,850,000 | $1,280 | -8.9% |
| Feb 26, 2021 | PH12AB | 5 BR · 5.5 BA | 6,733 | $9,800,000 | $1,456 | -2.0% |
| Aug 20, 2019 | 711A | 3 BR · 3 BA | 3,007 | $4,650,000 | $1,546 | -2.1% |
| Dec 10, 2018 | 8A | 3 BR · 3 BA | 2,794 | $5,100,000 | $1,825 | -1.8% |
| Oct 13, 2017 | 4A | 3 BR | 3,007 | $4,283,333 | $1,424 | +0.8% |
| Feb 14, 2017 | 7A | 3 BR | 2,794 | $4,600,000 | $1,646 | — |
| Dec 28, 2016 | 5B | 3 BR | 3,292 | $4,725,000 | $1,435 | +0.0% |
| Mar 24, 2016 | 7B | 3 BR | 3,079 | $5,562,160 | $1,806 | — |
| Dec 16, 2015 | 10B | 3 BR | 3,079 | $5,700,000 | $1,851 | — |
| Oct 2, 2015 | 2B | 3 BR | 3,292 | $5,250,000 | $1,595 | +5.1% |
| Sep 15, 2015 | 11B | 3 BR | 3,079 | $6,500,000 | $2,111 | — |
| Aug 19, 2015 | 9B | 3 BR | 3,292 | $5,400,000 | $1,640 | -3.5% |
| Aug 15, 2013 | 8A | 3 BR | — | $4,500,000 | — | -4.3% |
| Aug 8, 2013 | 9A | 3 BR | — | $4,750,000 | — | -10.3% |
| Jul 2, 2012 | 2A | 3 BR | 3,007 | $4,000,000 | $1,330 | +0.1% |
| May 1, 2012 | 2B | 3 BR | 3,292 | $4,075,000 | $1,238 | -3.0% |
| Jun 30, 2011 | 3B | 3 BR | 3,292 | $4,200,000 | $1,276 | -6.7% |
| Apr 19, 2011 | 5A | 3 BR | 3,007 | $3,850,000 | $1,280 | -3.6% |
| Jan 19, 2010 | 7B | 3 BR | 3,200 | $4,000,000 | $1,250 | -5.9% |
| Sep 22, 2008 | 7A | 3 BR | 3,007 | $4,150,000 | $1,380 | -2.4% |
| Jul 31, 2008 | 11A | 3 BR · 3 BA | 3,007 | $4,600,000 | $1,530 | -20.7% |
| Jun 9, 2008 | 2B | 3 BR | 3,292 | $3,450,000 | $1,048 | -1.4% |
| Sep 20, 2007 | 7A | 3 BR | 3,007 | $3,589,331 | $1,194 | +1.8% |
| Sep 17, 2007 | 3B | 3 BR | 3,292 | $3,558,783 | $1,081 | +1.8% |
| Sep 17, 2007 | 3B | 3 BR | 3,292 | $3,558,784 | $1,081 | +1.8% |
| Sep 12, 2007 | 12AB | 5,873 | $9,418,812 | $1,604 | — | |
| Sep 12, 2007 | 12AB | 5,873 | $9,418,813 | $1,604 | — | |
| Sep 11, 2007 | 8B | 3 BR | 3,292 | $4,149,368 | $1,260 | +1.8% |
| Sep 11, 2007 | 8B | 3 BR | 3,292 | $4,149,369 | $1,260 | +1.8% |
| Sep 10, 2007 | 2A | 2 BR | 3,007 | $3,105,663 | $1,033 | -0.6% |
| Sep 10, 2007 | 2A | 2 BR | 3,007 | $3,105,662 | $1,033 | -0.6% |
| Sep 7, 2007 | 3A | 3 BR | 3,007 | $3,105,663 | $1,033 | +1.8% |
| Sep 6, 2007 | 10B | 3 BR | 3,292 | $4,353,018 | $1,322 | +1.8% |
| Sep 6, 2007 | 10B | 3 BR | 3,292 | $4,353,019 | $1,322 | +1.8% |
| Sep 5, 2007 | 6A | 3 BR | 3,007 | $3,436,594 | $1,143 | +1.8% |
| Aug 29, 2007 | 4B | 3 BR | 3,292 | $3,716,613 | $1,129 | +1.8% |
| Aug 28, 2007 | 2B | 3 BR | 3,292 | $3,512,963 | $1,067 | +1.8% |
| Aug 28, 2007 | 10A | 3 BR | 3,007 | $3,945,719 | $1,312 | +1.8% |
| Aug 27, 2007 | 9B | 3 BR | 3,292 | $4,251,194 | $1,291 | +1.8% |
| Aug 24, 2007 | 7B | 3 BR | 3,200 | $4,047,544 | $1,265 | +1.8% |
| Aug 23, 2007 | 9A | 3 BR | 3,007 | $3,843,894 | $1,278 | +1.8% |
| Aug 17, 2007 | 6B | 3 BR | 3,292 | $3,894,806 | $1,183 | +1.8% |
| Aug 16, 2007 | 11A | 3 BR | 3,007 | $4,073,000 | $1,355 | +1.8% |
| Aug 15, 2007 | 5B | 3 BR | 3,292 | $3,818,438 | $1,160 | +1.8% |
| Aug 15, 2007 | 8A | 3 BR | 3,007 | $3,869,350 | $1,287 | +1.8% |
| Aug 14, 2007 | 5A | 3 BR | 3,007 | $3,309,313 | $1,101 | +1.8% |
| Aug 2, 2007 | 11B | 3 BR | 3,292 | $4,378,475 | $1,330 | -0.5% |
| May 1, 2007 | 4A | 3 BR | 2,794 | $3,207,488 | $1,148 | — |
| May 1, 2007 | 4A | 3 BR | 2,794 | $3,207,487 | $1,148 | — |
| Aug 31, 2006 | 10B | 3 BR | 3,292 | $4,275,000 | $1,299 | +0.0% |
Sales sourced from NYC Department of Finance recorded transfers (BBL 1-00819-7503) and verified listing data. Apartment-level facts (line, condition, asking-price context) curated and cross-verified by The Roebling Team research desk. 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.
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