---
title: "21 East 87th Street #7B, New York City, NY 10128"
description: "21 East 87th Street #7B, New York City, NY 10128 — Upper East Side, New York City, NY. Last Sold Price $5,400,000. Sold on 9/30/2026. 4 bed, 4 bath, 2,638 sqft"
url: "https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10128/21-east-87th-street-b-7B-ny-10128"
source: "Real Estate Rebate Team"
dateModified: "2026-09-30T19:49:10.205Z"
status: "Closed"
---

# 21 East 87th Street #7B, New York City, NY 10128

Upper East Side, New York City, NY

Courtesy of Sothebys International Realty

Last updated: September 30, 2026, 3:49 PM

## At a Glance

- **Last Sold Price**: $5,400,000
- **Status**: Sold on 9/30/2026
- **Beds**: 4
- **Baths**: 4
- **Sqft**: 2,638
- **Common Charges**: $6,416 / mo
- **Price per Sqft**: $2,047
- **Brokerage Fee**: Share Eligible

This listing was successfully closed and is no longer active on the market.

[Planning to sell? Contact Régis Roumila](https://realestaterebatesnewyork.com/contact)

## Photos (10)

![21 East 87th Street #7B, New York City, NY 10128 — photo 1 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/dc6b86f0-a5de-41e2-a7b7-f164312e5e93.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 2 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/604c2ef9-9872-4237-8990-abf451c81fff.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 3 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/a99e0647-dee9-42b7-b6a2-7d3012cfaeb0.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 4 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/3924fd32-356a-4d1c-859f-588b943946e3.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 5 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/b4fd2e3a-5538-46ea-b51d-140963bd2f4e.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 6 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/42d0291c-d75d-46ab-92b3-5d8c5d46443e.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 7 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/8dfb1baa-7330-4dd0-abb9-8b6259949bd0.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 8 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/79ca2f8e-f472-459a-a2b4-aab44ef0d89b.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 9 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/6541b437-1d52-4373-8ed1-2dc4e2512f29.jpg)
![21 East 87th Street #7B, New York City, NY 10128 — photo 10 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/35ae2789-0ec6-47b8-b4bd-fd96182cc1ce.jpg)

## Property Overview

21 East 87th Street, #7B

Spacious, light flooded, prewar, 9-room apartment in prime Carnegie Hill location, this gracious property has the original floorplan and has been beautifully maintained by the same family for about eighty years. It formerly housed a magnificent, world renowned collection of Old Master drawings.

One enters the apartment through an elevator vestibule, shared by one other tenant, into a large foyer leading into a grand, east-facing living room with decorative fireplace and two large, double-hung windows overlooking Madison Avenue.  The adjacent formal dining room, easily seating twelve, is linked to the kitchen by a butler’s pantry with sink, refrigerator and dishwasher. In the eat-in kitchen, there is a washer/dryer and, off it, two maid’s rooms with a connecting bath.

The four good-sized bedrooms, all accessed from corridors off the foyer, face south and have ample closet space.  The primary one, serviced by a large fitted dressing room closet, is situated on the corner and therefore also has a wonderful, additional eastern exposure and a view overlooking the Park Avenue Synagogue. It has an en suite bathroom with separate shower and bathtub. One of the three bedrooms also has a small bathroom en suite, while the other two (one now used as a library) have a larger connecting bathroom that also provides a powder room for the apartment

Apartments in the B-line of 21 East 87th Street rarely come on the market.  Designed by Emery Roth in 1927, this building, situated near some of the best schools, restaurant and museums in New York City, is one of the most sought-after on the upper Eastside.  It is a full-service building with resident super and full-time doormen, as well as such amenities as a gym, a central laundry, bike storage, and a private storage unit.

There is a 2% flip tax. 65% financing permitted. Current monthly assessment of $515.08 through 2026.

## Property Details

- **Property Type**: Co-op
- **Beds**: 4
- **Baths**: 4
- **Rooms**: 9
- **Sqft**: 2,638 sqft
- **Stories**: 13
- **Year Built**: 1927
- **Price per Sqft**: $2,047
- **Common Charges**: $6,416 / Monthly
- **Listed On**: Apr 7, 2026
- **Days on Market**: 179 Days

### Residence Features

- Building Washer Dryer Install Allowed
- Common On Floor
- Common Area
- In Unit
- Entrance Foyer
- Eat-in Kitchen
- High Ceilings
- Pantry
- Dryer
- Dishwasher
- Refrigerator
- Washer
- City
- Skyline

## Estimated Monthly Payment

**$33,721 / month**, assuming a 20% down payment ($1,080,000), a 6.5% interest rate and a 30-year term. The page's calculator lets a buyer change all three.

- **Principal & Interest**: $27,305
- **Common Charges**: $6,416

Estimates only. Actual payments may vary. Confirm terms with your lender.

## Sales and market data

### Recent sales

10 apartments at 21 East 87th Street have recorded sales since October 2021, the most recent for $5,400,000 in September 2026. Prices are the figures recorded with the City, not asking prices.

| Unit | Beds | Sq Ft | Sold Price | $/ft² | Sold | Source |
| --- | --- | --- | --- | --- | --- | --- |
| 7B (Apartment) | 4 | 2,638 | $5,400,000 | $2,047/ft² | September 30, 2026 | MLS |
| [8A](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10128/21-east-87th-street-a-8A-ny-10128) (Apartment) | 2 | 1,800 | $2,350,000 | $1,306/ft² | July 28, 2026 | City record · MLS |
| 2AB (Apartment) | 5 | 4,600 | $7,825,000 | $1,701/ft² | June 4, 2026 | City record · MLS |
| 11A (Apartment) | 2 | 1,800 | $2,250,000 | $1,250/ft² | June 2, 2026 | City record · MLS |
| 2C (Apartment) | 3 | 2,500 | $3,795,000 | $1,518/ft² | February 27, 2026 | City record · MLS |
| 6D (Apartment) | 3 | — | $4,495,000 | — | October 1, 2025 | City record · MLS |
| 10D (Apartment) | 3 | — | $4,200,000 | — | August 14, 2025 | City record · MLS |
| 9A (Apartment) | 2 | — | $2,195,000 | — | July 25, 2024 | City record · MLS |
| 5D (Apartment) | 3 | 2,500 | $2,995,000 | $1,198/ft² | April 27, 2023 | City record · MLS |
| 4C (Apartment) | — | — | $3,800,000 | — | October 5, 2021 | City record |

Every row is a recorded transaction, including ancillary spaces such as storage and staff rooms where they were sold separately. Those are excluded from the benchmark below.

### How this price compares

- **Last sold price**: $5,400,000
- **Median sold price**: $3,862,500
- **Difference**: +$1,537,500 (+39.8%)
- **Last sold, $/ft²**: $2,047
- **Comparable sales**: 31
- **Sales from**: October 2024 – August 2026
- **Middle half of those sales**: $2,800,000 – $5,175,000

Based on co-op four-bedroom sales in Upper East Side.

Square footage is recorded for only 13 of these 31 sales (42%), so no price per square foot is shown for this group. Co-op sales rarely carry a floor area, and a figure drawn from a handful of them would not describe the rest.

This building has not had enough comparable sales of its own in the period to support a median, so the benchmark is drawn from Upper East Side instead.

### How these sales were negotiated

- **Sale-to-list price**: 93.9% (28 sales)
- **Sold below asking**: 79% (28 sales)
- **Typical time to find a buyer**: 80 days (29 sales)
- **Typical time to close**: 112 days (29 sales)

Based on co-op four-bedroom sales in Upper East Side with the required listing and closing data. Sample sizes vary by metric.

These are two separate periods measured on different clocks — time to find a buyer, and time from agreed deal to closing. They are medians of different sets of sales and do not add together into a single "days on market" figure.

### Price trend

Median sale price, co-op four-bedroom sales in Upper East Side

| Year | Median sold price | Sales |
| --- | --- | --- |
| 2017 | $6,431,250 | 15 |
| 2018 | $5,600,000 | 13 |
| 2019 | $5,200,000 | 15 |
| 2021 | $3,238,500 | 19 |
| 2022 | $5,475,000 | 24 |
| 2024 | $3,200,000 | 19 |
| 2025 | $4,225,000 | 18 |
| 2026 YTD | $3,765,000 | 10 |

Based on recorded co-op four-bedroom sales in Upper East Side. 2026 is year-to-date.

Sales data through September 2026.

Sale prices are the consideration recorded with the City in ACRIS, and each sale is dated by the day the City recorded it. A closing date reported to the MLS typically falls one to two weeks earlier. Recorded sales describe what has already happened and are not an appraisal, a valuation, or an estimate of what this home will sell for.

[See every recorded sale at 21 East 87th Street](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/21-east-87th-street)

## Price and Property History for 21 East 87th Street, Unit 7B

Review the recorded listing activity for 21 East 87th Street, Unit 7B, including asking-price changes and prior market dates.

- **Latest price change**: Reduced by $350,000, or 6.1%, on September 30, 2026
- **Originally listed**: April 7, 2026 at $6,195,000
- **Last sold**: $5,400,000 on September 30, 2026

| Date | Price | Listing event |
| --- | --- | --- |
| September 30, 2026 | $5,400,000 | Sold |
| September 30, 2026 | $5,400,000 | Asking price reduced by $350,000, or 6.1% |
| July 7, 2026 | $5,750,000 | Listing removed from the market |
| May 1, 2026 | $5,750,000 | Entered contract |
| April 24, 2026 | $5,750,000 | Asking price reduced by $445,000, or 7.2% |
| April 7, 2026 | $6,195,000 | Listed for sale by Sothebys International Realty |

## Property Taxes

This apartment is part of a co-op that is taxed as one lot shared across 72 apartments. The corporation’s 2026 property tax bill was $3,412,934 for the whole building. Shareholders cover it through their monthly maintenance rather than a separate bill for this unit.

[See the full property tax history for 21 East 87th Street](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/21-east-87th-street)

[How we source and calculate NYC property tax data](https://realestaterebatesnewyork.com/nyc-property-tax-data-methodology)

## About The Building

### 21 East 87th Street

Carnegie Hill · Stock Cooperative

21 East 87th Street, New York, NY 10128

A building in Carnegie Hill, currently featuring 1 active listing.

- **Year Built**: 1927
- **Active Units**: 1
- **Floors**: 13

[View the building page](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/21-east-87th-street)

### Available Residences — For Sale (1)

| Unit | Beds | Baths | Size | Price / Ft² | Price | Listing Office | Listed Date | Days on Market |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [6B](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10128/21-east-87th-street-b-6B-ny-10128) | 4 | 4 | — | — | $5,495,000 (-3.6%) | Brown Harris Stevens Residential Sales LLC | Feb 5, 2026 | 240 days |

### Recently Sold (2)

| Unit | Beds | Baths | Size | Price / Ft² | Sold Price | Listing Office | Listed Date | Sold Date |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [7B](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10128/21-east-87th-street-b-7B-ny-10128) | 4 | 4 | 2,638 sqft | $2,047 | $5,400,000 | Sothebys International Realty | Apr 7, 2026 | Sep 30, 2026 |
| [8A](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10128/21-east-87th-street-a-8A-ny-10128) | 2 | 2 | 1,800 sqft | $1,306 | $2,350,000 | Compass | Apr 30, 2026 | Jul 28, 2026 |

## Upper East Side

Overview of Upper East Side

[Explore Upper East Side](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/upper-east-side) · [All Neighborhoods](https://realestaterebatesnewyork.com/neighborhoods)

### Nearby Upper East Side

- [Central Park real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/central-park)
- [Roosevelt Island real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/roosevelt-island)
- [Upper West Side real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/upper-west-side)
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- [East Harlem real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/east-harlem)

## Related Links

- [21 East 87th Street — building page](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/21-east-87th-street)
- [Upper East Side neighborhood guide](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/upper-east-side)
- [Estimate your Buyer Commission Share and closing costs](https://realestaterebatesnewyork.com/calculators/buyer-closing-cost-calculator)
- [Contact Régis Roumila](https://realestaterebatesnewyork.com/contact)

---

> RLS IDX Data display by Real Estate Rebate Team. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., All rights reserved. IDX information is provided exclusively for consumers’ personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

> All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and the number of bedrooms listed is for informational purposes and is not a legal conclusion. Please consult with your own architect or engineer for exact dimensions and legal specifications.