- Year built
- 1960
- Type
- Cooperative within a condominium structure
- Units
- 173
- Floors
- 22
- Landmark
- No
- Pets
- No pets for new purchasers per the purchase application on file; the house rules document a limited, grandfathered program dating to 2011 (dogs capped at 30 apartments, by lottery). Some listing records describe "pets with restrictions" — verify current policy with the managing agent
- Financing
- 75 percent maximum per the purchase application on file
Sutton East is the value-tier entry to one of Manhattan's most storied co-op corridors. The Sutton Place district is anchored by pre-war trophy cooperatives along the river — 1 Sutton Place South, the Gracie-class houses of the East 50s — and by post-war full-service buildings that deliver the same quiet, the same services, and the same address at a fraction of the price per foot. 345 East 56th Street is squarely in the second camp: a 1960 white-brick house of 173 apartments, fully staffed, with a landscaped roof terrace and its own garage, trading at price points that no longer exist in most full-service Manhattan buildings.
The ownership structure rewards attention. City records carry the building as a condominium (Condominium No. 510, recorded 1988), while the apartments themselves trade as cooperative shares in 345 East 56th Street Owners, Inc. — the classic condop arrangement, in which the residential cooperative occupies its own unit of a condominium that also contains the building's commercial space. In practice, buyers experience the building as a co-op: board package, board approval, proprietary lease. But the structure has a financial consequence worth understanding — the ground-level commercial space sits outside the cooperative, and the co-op instead owns its garage through a wholly owned subsidiary, Sutton West Garage Corp., a detail documented in the audited financial statements on file.
Operationally, the documents on file describe a conservatively financed house: a modest $5.8 million amortizing mortgage refinanced in 2017 at 4.15 percent with a 2037 maturity — long-dated, fixed, and small relative to the size of the building — plus documented capital work on the chiller plant, elevators, and HVAC risers in recent cycles. For a buyer comparing post-war co-ops, low corporate leverage with a locked long-term rate is exactly the underwriting profile to look for.
Architecture and unit composition
The building is a post-war white glazed-brick apartment house of the type that defined the East Side's 1950s–60s building boom — boxy massing, generous closets, sensible layouts, terraces on the setback lines. The architect is not firmly documented in public records, and we decline to guess. The mix runs from alcove studios through one- and two-bedrooms to three- and four-bedroom combinations; post-war proportions here renovate well, and combination units (the building's plural-letter lines) make up a meaningful share of the larger inventory. Higher floors pick up open outlooks over the low-rise Sutton side streets, and the rooftop terrace carries skyline and East River views.
Building operations
Full-service: 24-hour doorman, concierge, live-in resident manager, and a full porter and handyman staff. The amenity stack is practical rather than showy — landscaped roof terrace, central laundry, package room, refrigerated storage, bike room, private storage, and the on-site garage. Recent cycles have brought elevator modernization and lobby and HVAC upgrades per the financial statements and brokerage records. The offering plan, recent audited financial statements, and the building's purchase application are on file in The Roebling Research Library.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $124,514/yr
- Per unit / month range
- $0 – $60
What to know if you’re buying
It trades like a co-op — underwrite it like one. The condop label sometimes leads buyers to expect condo mechanics. Not here: there is a board package, a board interview, and a 75 percent financing cap per the purchase application on file. Run the Co-op Board Qualification Calculator before offering.
The pet policy is a genuine constraint. The purchase application on file states no pets for new purchasers, with a grandfathered program documented in the house rules. If a dog is part of your household, this is likely not your building — and you should confirm the current policy directly before falling for a floor plan.
The fee stack is documented and modest. A 1.75 percent flip tax, a $600 application fee, and standard processing fees appear in the purchase application on file. Confirm the flip-tax allocation between buyer and seller at offer stage; it is listed among purchaser closing items in the application.
Sublet flexibility is limited. Two years of ownership before subletting, a cap of roughly two years of subletting during ownership, and a meaningful sublet fee per the house rules on file. Investors should look elsewhere; pied-à-terre buyers are accommodated per listing records.
Price the location honestly. The block sits between First and Second Avenues — quieter than Midtown proper, a short walk to the E/M at 53rd and the 4/5/6/N/R/W at 59th, with Whole Foods, Trader Joe's, and the East River esplanade nearby. Buyers who want the river-facing Sutton hush should compare the Sutton Place South co-ops; buyers who want value with full service are in the right building.
What to know if you’re selling
Lead with the carry-to-service ratio. Few buildings at these price points offer a 24-hour door, concierge, live-in resident manager, roof terrace, and on-site garage. Frame the listing against what the same monthly outlay buys elsewhere in Midtown East — it is the building's strongest argument.
Document the building's financial conservatism. The long-dated 4.15 percent mortgage and the funded capital work survive attorney diligence well. We provide the underlying financial statements from the Research Library to serious buyers' counsel.
Be precise about policies in marketing. The pet restriction and sublet limits filter the buyer pool — better to state them plainly than to lose a deal at board-package stage. Estate and combination units should be priced to the renovation math; run the Renovation Cost Calculator against your asking strategy.
Comparable buildings
If you're considering 345 East 56th Street, also evaluate:
- 303 East 57th Street — post-war co-op neighbor with a similar value proposition at 57th and Second
- 322 East 57th Street — pre-war artist-studio co-op across 57th Street; the character alternative
- 25 Sutton Place South — post-war full-service co-op directly on the river; the corridor step-up
- 45 Sutton Place South — post-war Sutton co-op with river frontage
- 60 Sutton Place South — large post-war co-op at the corridor's southern end
- 2 Sutton Place South — Emery Roth & Sons post-war co-op at the foot of Sutton Square
- 1 Sutton Place South — the corridor's pre-war trophy; the prestige benchmark
- 425 East 58th Street (The Sovereign) — the post-war tower benchmark near the bridge
- 400 East 51st Street (The Grand Beekman) — the nearby condo alternative for buyers who want condo mechanics
The Roebling Team at Sutton East
The Roebling Team at Compass works the Sutton Place corridor and the broader Midtown East co-op market as a core practice area. We publish this building profile because Sutton East buyers and sellers deserve building-specific intelligence — the condop structure, the documented policy stack, and corridor-level comparables — not generic neighborhood commentary.
If you're considering a transaction at 345 East 56th Street, a 30-minute consultation is the right starting point.