York River House (1175 York Avenue)

York River House is postwar red-brick pragmatism by Hyman Isaac Feldman, a prolific mid-century Manhattan apartment-house architect: an 18-story tower grounded in a rusticated two-story stone base, with efficient plans laid out for daily livability rather than grandeur. The eastern lines look toward the East River and the Rockefeller University grounds; some lines carry terraces and balconies.

The roughly 228 residences run from studios and one-bedrooms — which dominate the stock — through two- and three-bedroom homes. Layouts are classic postwar co-op plans: defined foyers, separated kitchens, and generous closets that renovate well. Because the building is priced per room, the studios and one-bedrooms are the building's currency, which makes it a natural first-purchase and pied-à-terre building given the flexible rules.

York River House operates as a full-service condop: a full-time doorman, a live-in superintendent, an on-site full-service parking garage, a fitness center, a children's playroom, a landscaped rooftop terrace and garden, central laundry, a bike room, and private storage. The building is known for keeping maintenance moderate relative to full-service peers. The garage and any commercial income support the operating budget; buyers should review the financials, the reserve position, and any assessment during diligence, and confirm the current flip tax, sublet terms, and financing minimum with the managing agent — condop postures and fees can drift, and the exact figures are the building's most important transactional facts.

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.

Market read. Most recent trades (2026) cleared a median $848/sf across 3 sales. Median listing discount 3.4% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.

Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01458-7502) 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.

Understand the condop structure first. A condop is a cooperative for financing and board-approval purposes but carries condominium-flexible house rules. That means a co-op-style down payment (approximately 20 percent) and board approval, alongside permitted pieds-à-terre, guarantors, co-purchasing, and flexible subletting. Confirm every one of those terms in writing with the managing agent. Run the Co-op Board Qualification Calculator before offering.

The flexibility is the reason to be here. Few full-service buildings on the far Upper East Side permit pieds-à-terre and lenient subletting at this price point. If that flexibility matters to your plan, it is the building's core value — verify current policy.

Price per room, not per foot. As a per-room cooperative, the studios and one-bedrooms are the currency. Use same-room-count comparables. Run the True Monthly Carrying Cost Calculator on the specific unit.

Underwrite the location honestly. Across from Rockefeller University near the river: light, garden and water views, and quiet, but a longer walk to the Lexington line and proximity to the FDR on-ramp. View the specific line at multiple times of day.

Sell the flexibility. The condop rules — pieds-à-terre, guarantors, co-purchasing, flexible subletting — are the building's differentiator against the strict co-ops nearby. Market them directly to the buyer who needs them.

Sell the carry. Moderate maintenance relative to full-service peers is a headline buyers respond to. Document it.

Position the views and the price. Eastern river- and garden-facing lines and the per-room accessibility are the marketing story. The location trade is best framed as light, quiet, and value.

Document the structure proactively. Buyers' attorneys will want the condop mechanics — the financing minimum, sublet terms, and flip tax — confirmed early. Providing them shortens diligence.

If you're considering York River House, also evaluate:

• 200 East 74th Street — the flexible full-service co-op benchmark to the north (75 percent financing, permissive pied-à-terre posture); the closest structural cousin
• 160 East 65th Street (The Phoenix) — postwar Lenox Hill co-op nearby; the traditional-co-op alternative
• Manhattan House (200 East 66th) — the landmarked postwar-to-condominium benchmark; the pedigree alternative
• Bristol Plaza (200 East 65th) — full-service condominium on Third Avenue; the amenity-tower alternative
• 515 East 72nd Street — East River amenity condominium nearby; the lifestyle-building alternative
• 520 East 72nd Street — East River condominium; comparable river-edge positioning

The Roebling Team at Compass works Lenox Hill and the East River corridor of the Upper East Side as a core practice area. We publish this profile because a condop's value lives in its structure — the financing model, the sublet and pied-à-terre rules, the flip tax — and those are exactly the facts a generic building description misses.

If you're considering a purchase or sale at York River House, a 30-minute consultation is the right starting point. We'll bring same-room comparables, the full carrying-cost picture, and a plain-language walk-through of the condop mechanics that define this building.