Cooperative · 1972
Carnegie Tower
115 East 87th Street, New York, NY 10128

Carnegie Tower (115 East 87th Street)

115 East 87th Street, New York, NY 10128

At a glance
Year built
1972
Type
Cooperative
Units
198
Floors
38
Landmark
No
Pets
Permitted
Financing
Up to 75 percent — confirm current maximum with the managing agent
Flip tax
1 percent of the gross sale price plus 2 percent of profit, seller-paid — confirm current terms at offer stage
The Data Room

Every recorded sale at this building, 1999–2026

Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.

Median $/sf
$1,599
Listing discount
3.0%
Recorded sales
151
On record
1999–2026

Carnegie Tower is the flexible full-service co-op of central Carnegie Hill — a 38-story beige-brick tower off Park Avenue, built in 1972 and converted to a cooperative in 1986, that pairs a full-service address two blocks from Central Park with a policy framework unusually accommodating for the neighborhood: pieds-à-terre are permitted, financing runs to roughly 75 percent, and pets are welcome. In a corridor of strict pre-war co-ops, that flexibility is the building's defining feature.

The building's value proposition is location plus livability at a co-op price. It sits mid-block between Park and Lexington, deep enough off the avenues to be quiet, with a large landscaped fifth-floor wraparound terrace that gives residents genuine outdoor common space — a rarity in the pre-war co-op stock nearby. The 38-story height delivers open Carnegie Hill and, on the upper floors, city and park-direction sightlines that the surrounding low-rise brownstone context cannot. Priced per room in the co-op tradition, it is a value entry into one of Manhattan's most sought-after residential neighborhoods, with maintenance that brokers consistently cite as a selling point.

The mixed-use structure is worth understanding plainly: the residential tower rises over a base that contains a public school, entered separately from East 88th Street. That is the reason for the building's mixed residential/commercial tax class, and it is a fact for buyers to note rather than a concern — the school and the residences operate independently.

Architecture and unit composition

Carnegie Tower is a beige-brick midblock tower of the early 1970s, set back deeply from the side streets and grounded by a landscaped, canopied entrance. Its most distinctive residential feature is the large landscaped wraparound terrace on the fifth floor — a full-service common amenity that most Carnegie Hill co-ops lack. We do not carry an architect or developer attribution for the building because public records do not firmly document one, and we decline to guess.

The 198 residences run from studios and one-bedrooms — which dominate the stock and, priced per room, are the building's currency — through two- and three-bedroom homes. Layouts are efficient early-1970s co-op plans: defined entries, separated kitchens, and generous closets that renovate well. The upper floors carry the widest light and the strongest exposures.

Building operations

Carnegie Tower operates as a full-service cooperative: a 24-hour doorman, a concierge, a live-in superintendent, the landscaped fifth-floor terrace, a laundry room, a bike room, private storage, an on-site valet parking garage, a package room, and an interior courtyard. Management runs the building on a moderate maintenance basis that brokers consistently credit — a function of disciplined operations rather than large commercial income. Buyers should review the financials, the reserve position, and any assessment during diligence, and confirm the current flip tax, sublet terms, financing maximum, and pied-à-terre policy with the managing agent — these are the building's most important transactional facts and can drift over time.

Recent sales

Carnegie Tower trades as an accessible, flexible full-service Carnegie Hill co-op, priced per room, where the moderate maintenance and the unusually permissive rules drive absorption. Studios and one-bedrooms are the most liquid stock; upper floors and the strongest exposures carry a premium. The pied-à-terre and roughly 75-percent-financing flexibility widen the buyer pool relative to the strict pre-war co-ops nearby. Recorded sales auto-populate from public records; unit-level history and current same-line comparables are maintained in The Roebling Research Library and shared with clients during diligence. Because the building is priced per room, same-room-count comparables — not blended per-foot figures — are the correct analytical unit.

Recent transfers at this building, curated by The Roebling Team research desk. Apartment-level facts are independently verified before publishing; sale prices reflect the recorded transfer amount at the NYC Department of Finance.

DateUnitApartmentPricePPSFvs. Ask
Apr 14, 202618A
3 BR · 2 BA · 1,400 sf
$2,150,000$1,536/sf-6.3%
Oct 14, 202511C
2 BR · 1,400 sf
$2,100,000$1,500/sf-5.6%
Aug 27, 202526B
1 BR · 1.5 BA · 1,000 sf
$1,310,000$1,310/sf-3.0%
Jan 14, 202515AB
5 BR · 3 BA · 2,400 sf
$3,385,000$1,410/sfoff-mkt
Jul 11, 202433E
2 BR · 1.5 BA · 1,000 sf
$1,325,000$1,325/sfoff-mkt
Jul 2, 202417BC
3 BR · 4 BA · 2,400 sf
$3,300,000$1,375/sf-2.8%
Feb 27, 202435C
3 BR · 2 BA · 1,400 sf
$2,500,000$1,786/sfoff-mkt
Feb 8, 20249A
3 BR · 2 BA · 1,400 sf
$1,900,000$1,357/sf-9.3%

Market read. Most recent trades (2026) cleared a median $1,599/sf across 1 sale. Median listing discount 3.0% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.

The retrade record

Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.

19B · 1,000 sf+214%
$1,100,000 ($1,100/sf) 2018$3,450,000 ($3,450/sf) 2021
38C+103%
$1,475,000 2005$3,000,000 2018
26B · 1,000 sf+75%
$750,000 ($750/sf) 2009$1,310,000 ($1,310/sf) 2025
14CD · 2,800 sf+68%
$3,100,000 2008$5,200,000 ($1,857/sf) 2022
38F · 1,400 sf+66%
$1,510,000 ($1,079/sf) 2011$2,500,000 ($1,786/sf) 2016

Other recent transfers

DateUnitPrice
Jan 29, 202620EF$3,525,000
Jul 22, 202510B$1,295,000
Dec 17, 2024RESID$2,469,256
Jun 15, 2023RESID$999,999
Jun 11, 202116D$2,100,000
May 3, 202121E$1,080,000
View all 151 recorded transfers, sortable

Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.

Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01516-7502) 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 on co-ops is not officially recorded, figures shown are approximate.

What to know if you’re buying

The flexibility is the reason to be here. Pieds-à-terre and roughly 75 percent financing are unusual for a Carnegie Hill co-op and widen your options materially. Confirm the current pied-à-terre policy, financing maximum, and sublet terms in writing — co-op postures drift. Run the Co-op Board Qualification Calculator before offering.

The flip tax shapes your basis. The seller-paid flip tax — 1 percent of the gross price plus 2 percent of profit — is a specific structure; confirm the current terms, as it affects both sides of a future trade.

Price per room, and buy the floor. As a per-room co-op, the studios and one-bedrooms are the currency; upper floors carry the light. Use same-room-count comparables. Run the True Monthly Carrying Cost Calculator on the unit.

Note the mixed-use base. The residential tower sits over a public school entered from 88th Street. The two operate independently; it explains the building's tax class and is a fact to understand, not a concern.

What to know if you’re selling

Sell the flexibility and the terrace. The pied-à-terre policy, the roughly 75 percent financing, and the landscaped fifth-floor terrace are the differentiators against the strict pre-war co-ops nearby. Market them directly.

Sell the carry. Moderate maintenance in central Carnegie Hill is a headline buyers respond to. Document it.

Position the flip tax honestly. The seller-paid 1-percent-plus-2-percent structure should be built into pricing strategy from the start. Run the Seller Closing Cost Calculator before listing.

Price per room and by floor. Studios and one-bedrooms are the liquid stock; upper floors carry premiums. Use the right comparable set.

Comparable buildings

If you're considering Carnegie Tower, also evaluate:

The Roebling Team at Carnegie Tower

The Roebling Team at Compass works Carnegie Hill and the broader Upper East Side as a core practice area. We publish this profile because a co-op's value lives in its rules — the flip-tax structure, the financing maximum, the pied-à-terre and sublet policies — and those are exactly the facts a generic building description misses.

If you're considering a purchase or sale at Carnegie Tower, a 30-minute consultation is the right starting point. We'll bring same-room comparables, the full carrying-cost picture, and a plain-language walk-through of the board framework and flip tax that define this building.

The neighborhood

For the full corridor — architecture, schools, transit, and pricing across Upper East Side — read The Roebling Team Guide to Upper East Side.

Considering a move at Carnegie Tower?

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Corey Cohen, Principal · The Roebling Team at Compass
646.939.7375 · c.cohen@compass.com