The Infinity Flats
Midtown South, New York · 24 East 21st Street, New York, NY
The Infinity Flats in Midtown South, New York has 16 recorded condominium sales dating back to 2007, a median sale price of $5.1M and an average of $1,222 per square foot. Every figure below is drawn from recorded deeds — not listings, not estimates.
The Infinity Flats is one of 99 condo buildings CURVE covers in Midtown South, where the median recorded price is $1,307 per square foot. By that measure it ranks #46 of 69 in the neighborhood.
The record
Sales activity
Recorded sales by year
Every deed recorded in The Infinity Flats, by year, with that year's median price.
Sales by price point
How 16 recorded sales distribute across the price ladder.
Unit mix sold
Bedroom count across recorded sales.
10 most recent sales
| Unit | Date | Beds | Type | Price | $/SF | Change |
|---|---|---|---|---|---|---|
| 2 | 8/3/2026 | 3 Beds | Resale 2 | $5.3M | $1,289 | +39% |
| PH | 5/26/2026 | 4 Beds | Resale 2 | $7.0M | $1,702 | +17% |
| 6 | 11/20/2018 | 3 Beds | Resale 1 | $5.1M | $1,241 | 0% |
| PH | 7/3/2012 | 4 Beds | Resale 1 | $6.0M | $1,460 | -2% |
| 3 | 6/24/2011 | 3 Beds | Resale 1 | $4.3M | $1,046 | -2% |
| 5 | 7/29/2010 | 3 Beds | Resale 1 | $4.0M | $967 | -19% |
| 4 | 7/22/2010 | 3 Beds | Resale 1 | $4.1M | $998 | -16% |
| 2 | 4/29/2010 | 3 Beds | Resale 1 | $3.8M | $928 | -25% |
| 8 | 9/7/2007 | 3 Beds | Developer Sale | $5.2M | $1,258 | — |
| 3 | 8/31/2007 | 3 Beds | Developer Sale | $4.4M | $1,069 | — |
The full Infinity Flats record
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About this record
Where does this data come from?
Every sale shown is a deed recorded with the New York registry — the legal record of the transaction, not a listing or an estimate. CURVE assembles, verifies and reconciles each one to the building and the unit.
How many sales are in The Infinity Flats?
16 recorded sales, going back to 2007, of which 8 are resales. This page shows the 10 most recent; members see all of them.
What has The Infinity Flats done over time?
Resales in the building have changed hands at an average of -1.1% against their prior recorded price, after an average hold of 7.3 years.
What do members see that I don't?
The complete sales table, each unit's full chain of title, buyer and seller names, financing detail, the deed book and page behind every figure, the condo documents, and reports you can send to a client.