11–15 East 70th Street
11–15 East 70th Street, between Fifth and Madison Avenues · Upper East Side
BBL 1013857501 · BIN 1076289
- Year built
- 1909
- Type
- Two converted limestone mansions with commercial gallery space
- Landmark
- Designated
- Amenities
- Full-time doorman, elevator and resident storage; private outdoor space in selected homes
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 11–15 East 70th Street 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.
About the building
Two separate limestone houses were joined in a condominium conversion whose filing became effective in 1986. At 11, John H. Duncan's design places an arched entrance beneath a stone balcony and finishes with a mansard roof. Charles I. Berg's house at 15 has a rusticated base, a projecting balcony and a roof balustrade. Both façades received individual landmark protection before the conversion. The commercial gallery occupies a distinct portion of the property.
The residences include smaller one-bedroom apartments, larger combined layouts, garden-level homes and duplex penthouses. Some retain fireplaces, tall ceilings and substantial room proportions from the mansion interiors. Outdoor space takes several forms, including patios, balconies and upper terraces; these are attached to particular homes. A staffed entrance and elevator serve the residential condominium.
Recent sales
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
Recent closings at this building, sourced from NYC Department of Finance records. Apartment-level detail (line, condition, asking-price context) verified upon consultation request.
| Date | Unit | Price |
|---|---|---|
| Dec 30, 2025 | 1A | $2,100,000 |
| Aug 23, 2024 | COM | $4,300,000 |
| Jul 3, 2024 | 1A | $760,000 |
| Mar 28, 2022 | 1A | $5,000,000 |
| Aug 12, 2021 | 2B | $5,990,000 |
| Aug 7, 2018 | 5C | $4,150,000 |
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 1-01385-7501) 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.
What to know if you’re buying
The residential and gallery spaces can be offered together, but their permitted uses remain separate. Gallery square footage should not be counted as residential accommodation without the required approvals. With a small residential ownership group sharing staffed service across two landmarked houses, the allocation of gallery and residential expenses is a material part of the purchase.
Comparable buildings
- 40 East 72nd Street — A small prewar condominium with a limited number of residences.
- Whitney Condos — Historic architecture converted to a small condominium collection.
- The Marquand — A larger prewar condominium conversion with substantial apartment layouts.
- 21 East 66th Street — An established prewar condominium near Fifth Avenue.
More Upper East Side buildings
- 10 Gracie Square (Upper East Side) — 1930 co-op by Pennington & Lewis
- 11 East 86th Street — 1960 co-op by Sylvan Bien
- 11 East 92nd Street
- The Marquand (11 East 68th Street) — 1913 condominium
- The Pulitzer Mansion, 11 East 73rd Street — 1901 co-op by McKim, Mead & White
- 12 East 87th Street (The Capitol) — 1910 co-op by George and Edward Blum
The neighborhood
For the full corridor — architecture, transit, and pricing across Upper East Side — read The Roebling Team Guide to Upper East Side.
How to read the facts on this page. Items attributed to an offering plan describe the building as it was offered at that filing — unit mix, square footage, the amenity program as planned. They are not a statement about how the building operates today. Tax and compliance figures are sourced separately to current City records and carry their own dates. House rules, staffing and fee policy can change by board resolution without any public filing: treat every policy line here as a starting point for diligence and confirm it with the managing agent. Where this page compares one building or neighborhood to another, that is our analysis of the recorded record — it names the measure, the period and the sample it rests on, and it is an observation about medians rather than a prediction about any particular apartment.
Considering a move at 11–15 East 70th Street?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.