- 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
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.
Inside Plaza 400
Recent sales
Plaza 400 transacts at a moderate cadence consistent with the building's substantial unit count — typically several closings per year across the full apartment-type stack.
Recent Roebling Team transactions at the building:
- #17G sell-side representation — closed at $1,240,000 on March 6, 2026 against a $1,275,000 ask (−2.7% to ask) in 61 days on market. A corner 2BR/2BA with a 30-foot living room and private balcony — a careful-market sell-side framework for the corridor's broader two-bedroom cohort.
- #4H sell-side representation — closed at $1,465,000 on June 27, 2025 against a $1,475,000 ask (−0.7% to ask), with two competing offers generated within two weeks of listing and an all-cash, no-financing-contingency buyer.
The two transactions span the different shapes a Plaza 400 sell-side can take — the fast-turnover, competitive-bidding arc at 4H, and the deliberate, careful-market clearing at 17G. Both case studies are published in full with their pricing-and-marketing arcs and the strategic frameworks behind each result.
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 Roebling Team at Plaza 400
The Roebling Team at Compass has carried direct, multi-transaction representation experience at Plaza 400 — including the #4H 2025 sell-side closing (documented in the linked case study) and additional historical representation at the building.
Buyers and sellers approaching Plaza 400 benefit from this direct experience in three concrete ways:
Apartment-line variation knowledge. With 41 floors and substantial apartment-line diversity, the difference between a premium east-line upper-floor apartment with East River exposure and a comparable apartment on a different line and floor can be meaningful. We can speak directly to apartment-level variation, exposure, and pricing-tier positioning across the building.
Board-package and approval calibration. The cooperative's application framework — Parts A and B, business and personal references, board interview structure — has specific calibration patterns. We have hand-held buyers through the Plaza 400 board-approval process and can speak to what the package and interview actually look like.
Marketing strategy for the sell side. The pricing thesis, the post-January-1 timing strategy, the staging-and-photography approach, the multi-channel buyer outreach, and the REBNY-financial-disclosure pre-vetting process used at #4H produced a 14-day, two-offers, all-cash, essentially-at-ask result. The same playbook is repeatable across the Plaza 400 apartment inventory and applicable to the broader Sutton Place cohort.