640 West End Avenue
640 West End Avenue, at West 91st Street · Upper West Side
Upper West Side
BBL 1012397501 · BIN 1033580
- Year built
- 1912
- Type
- Condominium
- Landmark
- Designated
- Amenities
- Part-time doorman, resident superintendent, elevator, central laundry and bicycle storage
Every recorded sale at this building, 2003–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $1,178
- Listing discount
- 3.6%
- Recorded sales
- 36
- On record
- 2003–2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 640 West End Avenue 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.
640 West End Avenue is a prewar condominium designed by Townsend, Steinle & Haskell, with formal dining rooms, extensive original woodwork and large corner apartments among its principal layouts. The twelve-story building stands at West 91st Street inside the Riverside-West End Historic District. Its limestone base and copper cornice frame a buff-brick façade.
The original developer was Odell & Townsend Holding Company, formed by Adelaide Townsend and George W. Odell. The design belongs to the period when large apartment houses were replacing lower-scale development along West End Avenue.
Today the condominium includes both expansive prewar homes and much smaller apartments. Some large layouts preserve side-by-side living and dining rooms; the smaller inventory includes homes of roughly 550–900 square feet. The full building cannot be represented by a single classic-room configuration.
Architecture and unit composition
A rusticated limestone base rises through the lower stories, with balconies and decorative stonework marking transitions in the façade. Above it, buff-colored brick is relieved by limestone details, upper balconies and garlands. A copper cornice finishes the roofline. At the entrance, polished granite columns and a broken pediment give the doorway a formal composition.
The corner position provides West End Avenue and West 91st Street frontages. A separate side-street entry forms part of the building's circulation. The entrance has steps, an access detail relevant to the route from sidewalk to lobby.
Larger apartments retain ceilings around ten feet, parquet floors with decorative borders, paneled woodwork and long internal halls. Surviving details include carved wood, plaster ceiling ornament, leaded-glass cabinetry and pocket or French doors between public rooms. Several larger plans place the living room and formal dining room alongside one another, with bedrooms beyond.
Three-bedroom configurations may include a separate staff room or office and more than two bathrooms. Later renovations have introduced central air and in-unit laundry in some homes. Other apartments have been sold in estate condition, preserving more of the original arrangement and finishes.
The smaller homes occupy a different size category from the approximately 1,700–2,050-square-foot apartments. Combined apartments add further variation. A large prewar floor plan, a smaller subdivided home and a combination have distinct room proportions even when their bedroom counts overlap.
Building operations
The building has a part-time doorman and resident superintendent, along with central laundry and bicycle storage. Its condominium form accompanies a prewar physical plant and historic-district exterior. Alterations to designated exterior features, including windows and façade details, fall within LPC oversight.
Residential unit lots are Class 2, with no cap on assessment growth, and no tax abatement is listed. The tax-lot structure also contains Class 4 interests. These are separate from the 36 residences counted by the city.
In-unit laundry and central air are present in renovated apartments, but they are not uniform original building systems. For a buyer choosing between a renovated home and an estate-condition apartment, the presence of those installations is a concrete difference in the scope of work already completed.
Policy framework
Pets are permitted — confirm with the managing agent.
Recent sales
Recent closings 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 |
|---|---|---|---|---|---|
| May 19, 2026 | 12C | 2 BR · 1 BA · 900 sf | $950,000 | $1,056/sf | -3.6% |
| Jul 20, 2022 | 1B | 4 BR · 3 BA · 1,945 sf | $1,800,000 | $925/sf | +0.0% |
| Feb 4, 2022 | 1C | 1 BR · 1 BA · 549 sf | $650,000 | $1,184/sf | -10.3% |
| Apr 2, 2021 | 2B | 3 BR · 2.5 BA · 2,049 sf | $2,400,000 | $1,171/sf | -17.2% |
| Dec 29, 2020 | 12B | 1 BR · 1 BA · 800 sf | $885,000 | $1,106/sf | +7.3% |
| Aug 9, 2019 | 5D | 2 BR · 1.5 BA · 1,098 sf | $1,575,000 | $1,434/sf | -7.1% |
| Feb 20, 2019 | 11A | 3 BR · 2 BA · 1,712 sf | $3,000,000 | $1,752/sf | -17.7% |
| Mar 1, 2018 | 8A | 3 BR · 2 BA · 1,729 sf | $2,400,000 | $1,388/sf | -19.9% |
Market read. Most recent trades (2026) cleared a median $1,178/sf across 1 sale. Median listing discount 3.6% 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 1-01239-7501) 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 from recorded condo declarations and offering plans.
Buying here? Condo closing costs with a mortgage typically run 3 to 6% of the price. See NYC co-op and condo closing costs, line by line.
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Comparable buildings
- 650 West End Avenue: A same-block prewar condominium of comparable apartment-house scale.
- 190 Riverside Drive: A similarly scaled prewar condominium with a Riverside Drive frontage.
- The Vancouver: A smaller, lower-rise condominium conversion for comparing prewar layouts with fewer residences.
- 595 West End Avenue: Another West End Avenue prewar condominium in a taller building.
- 317 West 89th Street: A smaller prewar condominium close to the same portion of West End Avenue.
More Upper West Side buildings
- 610 West 110th Street — 1921 condominium by Schwartz & Gross
- 611 West 111th Street — 1905
- 611 West 56th Street — 2018 condominium
- 661 Amsterdam Avenue (The Clayton) — 1940 co-op
- 952 Columbus Avenue (Ivy Park) — 2015 condominium
- 1965 Broadway (The Grand Millennium) — 1996 condominium by SLCE Architects
The neighborhood
For the full corridor — architecture, transit, and pricing across Upper West Side — read The Roebling Team Guide to Upper West Side.
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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