The Stuart Duncan House
3 East 75th Street, between Fifth and Madison avenues · Upper East Side
Lenox Hill, Upper East Side
BBL 1013907504 · BIN 1041684
- Year built
- 1902
- Type
- Condominium
- Landmark
- Designated
- Amenities
- Elevator, part-time doorman, live-in superintendent and common laundry
Every recorded sale at this building, 2006–2025
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $2,594
- Listing discount
- 5.0%
- Recorded sales
- 11
- On record
- 2006–2025
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About the building
C. P. H. Gilbert designed this broad limestone mansion for Stuart Duncan, built in 1902–04. Its Beaux-Arts façade and approximately fifty-foot frontage reflect its origin as a substantial private house near Fifth Avenue. The house was converted to apartments in 1941 and to condominium ownership in 2005. A marble entrance hall and winding staircase remain part of the building's interior character.
The residential mix includes large full-floor homes and duplexes, smaller apartments, and a multilevel penthouse with terraces. The condominium also contains separate professional space at the lower level. Elevator service, a part-time doorman and a live-in superintendent provide staffing and access within a building with only a handful of residences. Private outdoor space belongs to selected homes; the roof terraces are part of the uppermost accommodation.
Recent sales
Recent closings at this building, curated by The Roebling Team research desk. Prices are the transfer amounts recorded with the NYC Department of Finance; apartment-level detail is checked against the building’s own file in The Roebling Research Library before publishing.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Jan 16, 2025 | PH | 3 BR · 4 BA · 7,325 sf | $19,000,000 | $2,594/sf | -3.8% |
| Jan 6, 2011 | 2C | 1 BR · 1,558 sf | $2,698,363 | $1,732/sf | -3.6% |
| Dec 9, 2010 | 1A | 538 sf | $697,501 | $1,296/sf | -3.0% |
| Feb 27, 2009 | 2A | 4 BR · 4,067 sf | $7,800,000 | $1,918/sf | -11.3% |
| Aug 14, 2008 | PH | 5 BR · 7,800 sf | $20,365,000 | $2,611/sf | -18.0% |
| Dec 8, 2006 | 2B | 1,175 sf | $1,934,675 | $1,647/sf | off-mkt |
| Sep 13, 2006 | 2A | 4 BR · 4,067 sf | $7,127,750 | $1,753/sf | -5.0% |
| Mar 16, 2006 | 5 | 4,003 sf | $4,536,135 | $1,133/sf | off-mkt |
Market read. Most recent trades (2025) cleared a median $2,594/sf across 1 sale. Median listing discount 5.0% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.
The retrade record
Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.
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 1-01390-7504) 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 from recorded condo declarations and offering plans.
Buying here? Condo closing costs with a mortgage typically run 3 to 6% of the price. See NYC co-op and condo closing costs, line by line.
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Comparable buildings
- Whitney Condos — Another mansion conversion offering condominium ownership nearby.
- 40 East 72nd Street — A small prewar condominium with a limited residential inventory.
- The Parkville — Prewar condominium ownership in a taller building with relatively few homes.
- 30 East 76th Street — A taller prewar condominium alternative in the same immediate area.
More Upper East Side buildings
- 3 East 84th Street — 1928 co-op
- 3 East 85th Street — 1912 co-op
- 3 East 95th Street (The Carhart Mansion) — 1913 condominium
- 4 East 62nd Street (Curzon House) — 1910 condominium by Clinton & Russell
- 4 East 70th Street — 1938 co-op by Sylvan Bien
- 4 East 72nd Street — 1929 co-op
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.
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