170 East 90th Street
170 East 90th Street, between Lexington and Third avenues · Upper East Side
Carnegie Hill, Upper East Side
BBL 1015180042 · BIN 1048128
- Year built
- 1920
- Type
- Cooperative
- Landmark
- No
- Amenities
- Shared planted roof deck; central laundry
Every recorded sale at this building, 2004–2025
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $1,375
- Listing discount
- 6.1%
- Recorded sales
- 17
- On record
- 2004–2025
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 170 East 90th Street would likely sell for today, what it costs to sell, and what you’d walk away with — reviewed personally against condition, exposures, renovation quality, and the competition actually on the market.
170 East 90th Street is the middle building in a three-property cooperative spanning 168–172 East 90th Street. Each entrance serves a five-story, ten-apartment walk-up, while the cooperative as a whole comprises 30 residences. The roof deck and laundry add shared facilities to a building whose apartment access remains by stairs.
The cooperative conversion dates to 1988. Its homes include broad two-bedroom layouts, some with two bathrooms, as well as ground-level duplex space and private outdoor areas. The address is just east of Lexington Avenue, on the Upper East Side's side-street grid.
Architecture and unit composition
The building has two apartments per floor. Many homes fall around 1,000–1,150 square feet, with high ceilings, exposed brick and fireplaces appearing in renovated interiors. Some layouts retain two bedrooms and a separate dining area; others have been reconfigured to add an additional room. Bathroom counts also vary within this compact inventory.
Upper apartments can have windows facing more than one direction, including north, south and west. The ground-level duplex configuration provides a separate outdoor terrace and interior space on two levels. Those arrangements have different circulation and daylight conditions from the single-level apartments above.
Five floors of stairs are a material part of the upper-floor homes. The shared roof deck provides outdoor space beyond the private terraces attached to individual apartments, but it adds another climb for residents on the lower floors.
Building operations
The three properties share a cooperative corporation while retaining separate tax parcels. At 170 East 90th Street, the property is assessed in Class 2C. Its ten-apartment parcel receives the assessment-growth caps associated with that class even though the corporation owns 30 apartments across the three addresses.
Central laundry serves residents, and some apartments also contain in-home washers and dryers. The planted roof deck is a common amenity. The cooperative's ownership spans all three buildings, so shared capital expenses and maintenance obligations should be understood at the corporation level.
Policy framework
Financing: Up to 80%, implying a minimum 20% down payment — confirm with the managing agent.
Pied-à-terre: Permitted — confirm with the managing agent.
Co-purchasing, gifts and guarantors: Permitted — confirm with the managing agent.
Subletting: Permitted subject to the cooperative's approval and terms — confirm with the managing agent.
Pets: Cats permitted; dogs not permitted — confirm with the managing agent.
Recent sales
Recent transfers at this building, curated by The Roebling Team research desk. Prices are the transfer amounts recorded with the NYC Department of Finance; apartment-level detail is checked against the building’s own file in The Roebling Research Library before publishing.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Jun 24, 2025 | 1W | 2 BR · 2 BA · 1,000 sf | $1,375,000 | $1,375/sf | -17.9% |
| Apr 15, 2025 | 5W | 2 BR · 2 BA | $875,000 | -7.9% | |
| May 18, 2022 | 4W | 2 BR · 1,100 sf | $975,000 | $886/sf | -2.4% |
| Oct 20, 2021 | 2E | 2 BR · 2 BA · 1,100 sf | $1,150,000 | $1,045/sf | -3.8% |
| Jun 3, 2021 | 1E | 2 BR · 2 BA · 1,100 sf | $900,000 | $818/sf | -5.3% |
| Oct 10, 2018 | 5E | 2 BR · 1 BA · 1,157 sf | $835,000 | $722/sf | -5.1% |
| Dec 20, 2017 | 4E | 3 BR | $830,000 | -9.3% | |
| Feb 10, 2014 | 3E | 2 BR · 1,100 sf | $840,000 | $764/sf | -4.0% |
Market read. Most recent trades (2025) cleared a median $1,375/sf across 1 sale. Median listing discount 6.1% 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.
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 1-01518-0042) 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.
Buying here? Co-op closing costs typically run 2 to 3% of the price. See NYC co-op and condo closing costs, line by line.
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Comparable buildings
- 170 East 92nd Street — A nearby prewar cooperative with a similar low-rise scale.
- Trafalgar Court — A taller prewar cooperative on the same street, useful for comparing building form and access.
- The DeKoven House — A small prewar cooperative for comparing a limited apartment inventory.
- Carnegie Hill Co-op — A larger prewar cooperative west of Lexington Avenue.
- 1261 Madison Avenue — A smaller prewar cooperative on an avenue, offering a different exposure and street setting.
- 120 East 86th Street — Another smaller prewar cooperative, with an address on a wider crosstown street.
More Upper East Side buildings
- 170 East 78th Street (The Morgan Studios) — 1927 co-op
- 170 East 79th Street — 1927 co-op by J.E.R. Carpenter
- 170 East 88th Street — 1980 co-op
- 170 East 92nd Street — 1920 co-op
- Evans Tower (171 East 84th Street) — 1987 condominium by Philip Birnbaum & Associates
- 173 East 79th Street — 1928 co-op
The neighborhood
For the full corridor — architecture, transit, and pricing across Upper East Side — read The Roebling Team Guide to Upper East Side.
The full playbook — what goes in the package, how boards read your financials, the interview, and the timeline — plus sample cover, reference, and personal letters you can adapt.
How to read the facts on this page. Items attributed to an offering plan describe the building as it was offered at that filing — unit mix, square footage, the amenity program as planned. They are not a statement about how the building operates today. Tax and compliance figures are sourced separately to current City records and carry their own dates. House rules, staffing and fee policy can change by board resolution without any public filing: treat every policy line here as a starting point for diligence and confirm it with the managing agent. Where this page compares one building or neighborhood to another, that is our analysis of the recorded record — it names the measure, the period and the sample it rests on, and it is an observation about medians rather than a prediction about any particular apartment.
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