An exceptional offering of a majestic, sun-drenched, all exterior-facing corner classic 9-into-8-room home in one of Carnegie Hill's most sought-after Emery Roth pre-war full-service luxury cooperatives. The B-line residences at 21 East 87th Street seldom come to market and are prized for their unparalleled light, grand proportions and a perfectly balanced layout that lives as beautifully as it entertains, as demonstrated in Residence 6B. This is a once in a generation opportunity to create a uniquely glorious home on a coveted park block surrounded by the best that life on the Upper East Side has to offer.
Enter off of a semi-private landing and be welcomed into a gracious entry gallery from which both the entertaining spaces and private quarters seamlessly flow. Before you is a grand living room in which warm eastern sun pours through oversized double-hung windows overlooking Madison Avenue. At approximately 25 feet deep, the living room feels both expansive and inviting, anchored by a handsome decorative marble fireplace and framed by high beamed ceilings carried throughout the home. Immediately adjacent to the living room is the formal dining room, also grand in scale and adorned by the sunlight and views of Madison Avenue. Accessed through an elegant pair of French doors, it joins the living room in creating a flawless space for entertaining at scale.
Rare in pre-war design, the kitchen enjoys sun-filled exterior avenue exposures as well. Having absorbed a second service room, the double-windowed eat-in kitchen is massive, offering a space that's primed for a top-tier re-imagining of an enviable dining kitchen with ample room for every top-of-the-line appliance you might want, abundant counter space, vast storage, and a casual dining area as well. It has an adjacent pantry with a prep sink on one side and a sizable east-facing staff room/home office with an en-suite full bathroom on the other.
The private quarters are all ideally arranged on the south side of the apartment, crowned by a king-sized corner primary bedroom suite bathed in southeastern sun, with a windowed 4-fixtured primary bathroom and a large dressing room. The bedroom adjacent the primary suite faces south over 87th Street and is currently in use as a library serviced by an en-suite windowed full bathroom with a stall shower. There are two more sizable bedrooms with share a windowed full bathroom with a stall shower. Both bedrooms face south over East 87th Street, and each of them has its own large walk-in closet.
Built in 1927 and conceived by famed architect Emery Roth, 21 East 87th Street is one of Carnegie Hill's most beloved buildings. A full-time doorman and live-in resident manager provide polished and attentive service, and the building features a gym, central laundry, bicycle storage and private storage for each residence. Residents enjoy immediate access to Central Park, Museum Mile and the finest cultural and educational institutions, restaurants, entertainment and shopping that New York City has to offer. Pets are welcome. There is a flip tax of 2% of the purchase price, and financing is allowed up to 65%.
There is a monthly capital assessment in the amount of $500.64 through 2026.
Listed by Daniella Gross Schlisser
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Brown Harris Stevens Residential Sales LLC
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(917) 774-2800
Listed by Justin Pak Pak
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Brown Harris Stevens Residential Sales LLC
Last updated June 13, 2026
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Source: REBNY #RLS20070541
RLS Data display by Prevu Real Estate LLC
Listing Facts
TypeCo-op
NeighborhoodCarnegie Hill
Bedrooms4
Bathrooms4
Days on Prevu131
HOA/Maint. Fees$6,236/month
Amenities
Dishwasher
Private Outdoor Space
Concierge
Location
Mortgage Calculator
Listing History
05/12/2026
Price Decreased
$5,700,000
04/07/2026
Price Decreased
$5,995,000
02/05/2026
Listed by Brown Harris Stevens Residential Sales LLC
$6,195,000
Estimated Closing Costs
Total
$137,750
Attorney Fees
$4,000
NYC Mansion Tax
$128,250
Bank Attorney
$1,500
Other Closing Costs
$4,000
Estimated closing costs are based on the list price of $5,700,000 and a 50% downpayment. These estimates are for indicative purposes only. Actual closing costs may vary for each transaction. See the Closing Costs Calculator for calculations specific to your situation.
Property Details for 21 East 87th Street 6B
Association
Amenities
Pets Allowed: Building Yes, No
Concierge: Doorman Full Time, Concierge Part Time
Fees
Association Fee: $6,236.00 Monthly
Financial
Flip Tax: 2.0%
Flip Tax Remarks: Purchase Price
Exterior
Construction
Number Of Units Total: 72
Stories Total: 13
Structure Type: High Rise
Year Built: 1927
Building Name: 21 East 87th Street
Entry Level: 6
Features
View: City
Interior
Features
Appliances: Dishwasher, Washer Dryer Allowed
Fireplace Features: Decorative, Gas
Fireplace: Yes
Fireplaces Total: 1
Interior Features: Separate/Formal Dining Room, High Ceilings, Walk-In Closet(s)
Measurements
Living Area Units: SquareFeet
Rooms
Bathrooms Full: 4
Bathrooms Total Integer: 4
Bedrooms Total: 4
Rooms Total: 8
Other
Location
City Region: Manhattan
Subdivision Name: Carnegie Hill
Tax Block: 01499
Tax Lot: 0014
Utilities
Equipment
Laundry Features: In Unit
Frequently Asked Questions
How many bedrooms and bathrooms does this co-op have?
There are 4 bedrooms and 4 bathrooms in this co-op at 21 East 87th Street 6B.
How does 21 East 87th Street 6B compare to other co-ops in Carnegie Hill?
This co-op is listed 83% above the average price for co-ops in Carnegie Hill and has been on the market for 12 more days than the typical home in this area.
What building or home owners association is the co-op part of?
This co-op is in the 21 East 87th Street building.
21 East 87th Street 6B is a 4-bedroom, 4-bath co-op for sale in New York NY 10128. On Prevu for 131 days at $5,700,000. This includes a recent price decrease of $295,000. This residence is located in Carnegie Hill. The median listing price for co-ops in this area is $2,500,000. The home offers private outdoor space, dishwasher, and doorman. Browse more co-op listings in Manhattan.
RLS Data display by Prevu Real Estate LLC
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Based on information from the Real Estate Board of New York and/or other sources. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity. 2026 The Real Estate Board of New York, Inc., All rights reserved.
Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.