- Year built
- 1915
- Type
- Cooperative
- Landmark
- Designated
Every recorded sale at this building, 2004–2025
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- Recent range
- $2M – $10.4M
- Listing discount
- 10.2%
- Recorded transfers
- 28
951 Park Avenue belongs to the first great wave of Park Avenue apartment construction — the years right around 1915 when the avenue was transformed from a railroad cut into the most prestigious residential boulevard in America. It was designed by Robert T. Lyons, an architect closely associated with the Bing & Bing development office, whose pre-war apartment houses set the standard for solidly built, well-planned middle-and-upper-tier Manhattan living. Lyons's hand is on several of the avenue's early cooperatives, and 951 is cut from the same cloth: a thirteen-story masonry building, dignified rather than showy, planned for spacious family apartments.
What gives the building its particular character today is its ownership. 951 Park is held by a tenant-stockholder cooperative corporation — it is owned by its residents, not a landlord — and it sits squarely inside the Park Avenue Historic District, the protective designation that has kept this stretch of the avenue architecturally intact. For buyers, that combination is the appeal: a true pre-war co-op, on Park Avenue, in a landmarked corridor, at a scale and price point more attainable than the avenue's largest trophy houses.
Architecture and unit composition
Lyons designed 951 in the restrained Renaissance-Revival idiom that defined Park Avenue's first generation — a limestone-anchored base, a brick-and-masonry shaft, and a classical crowning cornice, with a small amount of ground-floor commercial space that is original to the building's mixed-use plan. Thirteen stories and 28 apartments yield a comfortable two-to-three-homes-per-floor arrangement, the pre-war scale that produced the gracious layouts buyers still seek: entry foyers, separate dining rooms, high ceilings, and the hard-plaster walls and solid construction that distinguish 1915 building from anything newer. Apartments here are family-sized pre-war homes, and the better lines carry the period proportions and detail intact.
Building operations
951 Park is run as a full-service pre-war cooperative for its resident-owners. The lobby is attended, a live-in resident manager oversees the building, and storage is available. As a cooperative inside the Park Avenue Historic District, the building is governed by a residential board that reviews purchasers through the customary board package and interview, and exterior and visible alterations are subject to Landmarks review. Cooperatives of this vintage and location typically run conservative financing and admissions policies oriented toward owner-occupants; buyers should plan their financing accordingly and approach the purchase as a primary-residence transaction. We help buyers confirm the building's current financing parameters, flip-tax structure, and sublet posture against the cooperative's governing documents before they bid.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $40,681/yr
- Per unit / month range
- $0 – $121
Facade safety — Local Law 11
The facade passed its last inspection with no required repairs — nothing to budget for here, and no facade assessment on the horizon for roughly five years.
QEWI = Qualified Exterior Wall Inspector — the licensed engineer the city requires to sign the report (the independent expert, not the managing agent). Source: NYC DOB facade filings (FISP) · The Roebling Research Library.
See the full facade history →Recent sales
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.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Mar 11, 2025 | 8 | 6 BR · 6.5 BA | $10,450,000 | -4.8% | |
| Apr 2, 2024 | 7E | 3 BR · 3 BA | $1,995,000 | -15.1% | |
| Jun 14, 2022 | 2 | 7 BR · 6.5 BA | $6,161,250 | +3.1% | |
| Feb 10, 2022 | 5E | 3 BR · 3.5 BA | $2,425,000 | -25.4% | |
| Dec 14, 2021 | 12W | 4 BR · 4 BA | $7,600,000 | -4.9% | |
| Sep 10, 2021 | 10E | 3 BR · 2.5 BA · 1,745 sf | $1,999,995 | $1,146/sf | -11.1% |
| Aug 11, 2021 | 12W | 4 BR · 4 BA | $7,600,000 | -4.9% | |
| Dec 18, 2017 | 1NW | 2 BR · 1,575 sf | $1,950,000 | $1,238/sf | -21.8% |
Market read. Most recent trades (2021) cleared a median $1,146/sf across 1 sale. Median listing discount 7.7% 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.
Other recent transfers
| Date | Unit | Price |
|---|---|---|
| Jun 17, 2022 | 3NW | $2,825,000 |
| Feb 15, 2018 | 1B | $1,500,000 |
| Jan 26, 2015 | 2E | $2,495,000 |
| Jan 26, 2015 | 1E | $2,435,000 |
| Dec 20, 2012 | 6W | $5,400,000 |
| Jun 23, 2005 | 1E | $950,000 |
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 1-01510-0072) 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
Buying at 951 Park means buying into a resident-owned pre-war co-op on a landmarked block of Park Avenue. Expect a conservative board oriented toward owner-occupants, a full board-package process, and the financing and reserve scrutiny standard at small pre-war cooperatives. The upside is a genuine Park Avenue address with real pre-war scale and detail, in a corridor protected from over-development. We help buyers read the financials, gauge the board's posture, and benchmark pricing against the avenue's comparable small co-ops.
What to know if you’re selling
The address and the architecture do much of the work. A Park Avenue cooperative, in the Historic District, with Lyons / Bing & Bing pedigree and intact pre-war layouts, appeals to a specific, motivated buyer. With turnover low, the right strategy is to price to the building's own benchmark and the genuine peer set on the avenue, present the period detail correctly, and reach the narrow audience that wants exactly this. We build that plan around the building's held-inventory history and the durable premium Park Avenue commands.
Comparable buildings
If you're considering 951 Park Avenue, also evaluate these nearby Park Avenue cooperatives:
- 941 Park Avenue — pre-war Park Avenue cooperative one block south
- 925 Park Avenue — full-service pre-war co-op nearby
- 911 Park Avenue — pre-war Park Avenue cooperative peer
- 940 Park Avenue — pre-war cooperative across the avenue
- 950 Park Avenue — Park Avenue cooperative on the same block
- 935 Park Avenue — pre-war Park Avenue co-op nearby
The Roebling Team at 951 Park Avenue
The Roebling Team at Compass specializes in Park Avenue, the Upper East Side, and the pre-war cooperative market. We publish this profile because buyers and sellers evaluating a small Park Avenue co-op deserve building-specific intelligence — the ownership structure, the board posture, the architecture, and where pricing sits against the genuine peer set on the avenue.
If you're weighing a purchase or sale at 951 Park, a 30-minute consultation is the right starting point.
Get the full picture on this building.
Current availability including off-market, the full comp set, and the board & financials read most listings don't show.