11 East 86th Street

11 East 86th is a twenty-story white-brick tower of the type that defined Upper East Side residential building in the postwar decades — clean-lined, efficient, and oriented toward light and views rather than ornament. Sylvan Bien's hand shows in the building's solid proportions and well-organized plan; the upper floors capture open city views and glimpses toward Central Park.

The apartments are the post-war product buyers expect: practical layouts with good light, ample closet space, and the higher window-to-wall ratio of the era's construction. Renovated homes here can be brought to a high finish level, and the building's scale and floor-plate make for comfortable family-sized residences. The era's casement windows, beamed ceilings in the lobby, and straightforward room flow are characteristic.

The building runs as a full-service cooperative, with a full-time doorman, a live-in resident manager, a fitness room, central laundry, bicycle storage, and private storage. Purchases proceed through the standard co-op board package and interview. As a well-run post-war co-op on a prime block, the building maintains a conservative financial posture and an owner-occupant culture — the steady, service-forward profile that makes this category dependable.

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. $/sf is measured on the latest sales with reliable square footage (2024): a median $1,148/sf across 1 sale. The building has traded as recently as 2026. Median listing discount 6.8% 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 1-01498-0010) 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.

This is a co-op, so expect a board package and interview and the financial review a conservative building conducts. The draw is location and service at a post-war basis: a full-service doorman building with a fitness room a half-block from Central Park and the Met, with the Madison corridor and the 86th Street subway at hand. Focus your diligence on the apartment's floor, light, and renovation state, and on the building's financials and reserves. We help buyers benchmark asking prices against comparable Carnegie Hill post-war co-ops and prepare a board package that clears cleanly.

The selling case is the address and the service. A full-service co-op a half-block from Central Park and the Met, with a fitness room and a live-in super, is precisely what a value-conscious Carnegie Hill buyer wants, and the marketing should lead with location, light, and turnkey condition. Pricing belongs against the post-war comparable set on the prime Fifth-to-Madison blocks rather than against pre-war product. A well-renovated, well-lit home shows the building's case at its strongest. We position these homes to the buyer who prioritizes the neighborhood and convenience over pre-war provenance.

If you're considering 11 East 86th Street, also evaluate these nearby Carnegie Hill and Upper East Side cooperatives:

• 2 East 88th Street — pre-war co-op near the park
• 12 East 87th Street — Carnegie Hill co-op nearby
• 21 East 87th Street — full-service co-op a block north
• 64 East 86th Street — Carnegie Hill building on the same street
• 60 East 88th Street — Upper East Side co-op peer