- Year built
- 1968
- Type
- Cooperative
- Floors
- 41
- Pets
- Permitted with registration. Both non-interactive pets (cats, fish, hamsters) and interactive pets (dogs) allowed, subject to rules regarding movement, behavior, and permitted areas.
- Pied-à-terre
- Allowed
Every recorded sale at this building, 1997–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $821
- Listing discount
- 3.2%
- Recorded sales
- 620
- On record
- 1997–2026
Plaza 400 sits at the dense northern edge of the Sutton Place corridor, on the south side of East 56th Street between First Avenue and Sutton Place — the seam between Sutton Place's prewar Gold-Coast residential character and the Midtown East infrastructure that defines East 56th Street west of Sutton.
Three structural features distinguish the building in the Sutton Place cooperative cohort.
The first is the supplemental-income financial profile. Plaza 400 owns its ground-floor commercial spaces directly — leasing them as the cooperative rather than selling them as a separate condominium component. The arrangement generates over $3 million in commercial income annually, fully leased without vacancy at most recent reporting. That income stream materially offsets the operating budget and supports a maintenance posture that has historically run lower per square foot than many comparable Sutton Place and Midtown East cooperatives of similar scale.
The second is the full-service operational standard. 24-hour doorman, 24-hour security, concierge, assistant super, on-site garage, central laundry, fitness center, central HVAC, children's playroom, rooftop pool and deck with unobstructed Midtown skyline views, and the 41st-floor Skytop Lounge — together a substantively-staffed amenity stack of the kind buyers historically associate with the larger condominium new-construction tier rather than the Sutton Place post-war co-op cohort.
The third is the buyer-flexibility policy posture. Plaza 400 permits pied-à-terre purchases, secondary-residence ownership, co-purchasing, parental purchases for adult or student children, and subletting (with a 3-year residency requirement, board approval, and a 15% sublet fee). The framework reads as more permissive than the strict primary-residence postures that define many of the Sutton Place pre-war buildings — which materially widens the qualified-buyer pool at every price point. The combination of buyer flexibility AND the full-service amenity stack is the structural argument the building makes against its peer set.
For buyers, Plaza 400 represents the upper-amenity tier of the Sutton Place full-service cooperative cohort — full-service operational standard, meaningful institutional financials, a permissive buyer-eligibility framework, and a maintenance posture supported by substantial commercial-income offset.
Building operations
The cooperative is operated by Plaza 400 Owners Corp. under a full-service staffing model. 24-hour doormen and 24-hour security, supported by a concierge and assistant superintendent, define the visitor experience. The on-site garage is managed separately by Garage Management Corporation (GMC) under a parking-rental contract that residents and tenants enter into directly with GMC at approximately $535.50 per month for current rate-period subscribers.
Central laundry, central HVAC, and the full amenity program (fitness center, rooftop pool and deck, children's playroom, 41st-floor Skytop Lounge) sit within the building envelope. In-unit washer/dryer installation is not permitted, which is consistent with the building's centralized utility design and broader full-service post-war NYC cooperative convention.
The cooperative's policy framework — flip tax, financing limits, subletting mechanics, buyer-eligibility rules — should be verified against the cooperative's current Buyer Policies and Financial Overview document at every offer stage. The summary above reflects the cooperative's most recent published policy package.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $385,916/yr
- Per unit / month range
- $0 – $51
Facade safety — Local Law 11
The latest available FISP filing classified the facade as Safe — no repairs were required at that inspection. Facade inspections run on a fixed five-year cycle; future inspection, repair, and any assessment decisions remain building-specific.
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 →Inside Plaza 400
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 |
|---|---|---|---|---|---|
| Jul 10, 2026 | 4R | 1 BR · 1.5 BA · 1,100 sf | $815,000 | $741/sf | +16.6% |
| Jun 29, 2026 | 17F | 1 BR · 1.5 BA · 950 sf | $715,000 | $753/sf | -4.7% |
| Jun 25, 2026 | 22E | 1 BR · 1.5 BA · 1,009 sf | $795,000 | $788/sf | -3.6% |
| Jun 1, 2026 | 3D | 3 BR · 2 BA | $1,375,000 | -1.4% | |
| May 20, 2026 | 22F | 1 BR · 1.5 BA | $951,000 | -3.8% | |
| Apr 1, 2026 | 4S | 1 BR · 1 BA · 775 sf | $665,000 | $858/sf | -1.5% |
| Mar 30, 2026 | 18P | 2 BR · 2 BA · 1,395 sf | $1,295,000 | $928/sf | -4.1% |
| Mar 6, 2026 | 17G | 2 BR · 2 BA · 1,201 sf | $1,240,000 | $1,032/sf | -2.7% |
Market read. Most recent trades (2026) cleared a median $821/sf across 9 sales. Median listing discount 3.2% 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 1-01367-0001) 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.
Comparable buildings
Plaza 400 sits within the Sutton Place full-service cooperative cohort — the post-war buildings on the east side of the avenue grid that combine substantial scale, full amenity programs, and the river-proximate sub-neighborhood character. For buyers evaluating Plaza 400 against alternative inventory, the most directly comparable buildings include:
- 1 Sutton Place South — Sutton Place's prewar Gold-Coast trophy address; a different stylistic register at substantially higher pricing
- 25 Sutton Place South — Prewar Sutton Place full-service co-op; classical-prewar reference point
- 430 East 58th Street (Sutton Tower) — Recent new-construction condominium on the corridor; different ownership structure and amenity tier at substantially higher pricing
- 50 Central Park South — Central Park South full-service tier comparable for buyers cross-shopping the broader Midtown / Park-perimeter inventory
For broader Sutton Place corridor context, see the Sutton Place corridor guide.
The neighborhood
For the full corridor — architecture, schools, transit, and pricing across Sutton Place — read The Roebling Team Guide to Sutton Place.
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A Private Pricing Opinion — what your apartment at Plaza 400 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.