1131 Third Avenue
1131 Third Avenue, New York, NY 10065
Lenox Hill, Upper East Side
BBL 1014210001 · BIN 1043872
- Year built
- 1961
- Type
- Cooperative
- Units
- 256
- Landmark
- No
Every recorded sale at this building, 2003–2026
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- 1BR median
- $662K
- Recent range
- $327K – $2.6M
- Listing discount
- 1.8%
- Recorded transfers
- 245
1131 Third Avenue is a large, well-run postwar cooperative in the heart of Lenox Hill — the kind of full-service doorman building that anchors the Upper East Side's deep middle market. Completed in 1961, it is one of the substantial white-brick-era apartment houses that rose along Third Avenue after the elevated railway came down and the avenue redeveloped into a residential corridor, and at roughly 256 apartments across 21 stories it is among the larger cooperatives on the avenue.
The location is its argument. On Third Avenue at 66th Street, residents are in the center of Lenox Hill — a few blocks from Central Park to the west, with the Lexington Avenue subway, the restaurants and shops of the upper 60s, and the full Upper East Side amenity base at the door. It offers full-service doorman living at pricing that sits well below the Park and Fifth Avenue tiers a few hundred feet west, which is precisely what draws buyers to this stretch.
At 256 apartments, 1131 Third spreads operating costs across a large shareholder base — a structural advantage for maintenance affordability — while supporting the full-time staffing and elevatored service that define the full-service postwar co-op.
Architecture and unit composition
The 1961 vintage places 1131 Third in the postwar idiom: an efficient white-and-tan-brick elevator building with ground-floor retail along Third Avenue, designed for practical, light-filled apartment living rather than pre-war ornament. Layouts run to the postwar standard — studios, one-, and two-bedroom apartments with functional plans, ample closets, and large windows — with larger combinations on the upper floors.
With approximately 256 apartments across 21 floors, the building runs at the higher-density format typical of the avenue's white-brick cooperatives, and individual apartments are best evaluated at the unit level on floor, exposure, and renovation history.
Building operations
1131 Third operates as a full-service postwar cooperative. A full-time doorman staffs the attended lobby, with a resident superintendent on site and central laundry and private storage in the building. As with most Lenox Hill postwar co-ops, the board reviews purchases through a formal application and interview, and prospective buyers should expect financing requirements, a flip-tax structure, and sublet rules set by the proprietary lease and house rules — the specific financial terms are the policy slate we walk clients through, and the current percentages should be confirmed at offer stage.
Local Law 97
- 2024–2029 annual penalty
- $106,775/yr
- 2030–2034 annual penalty
- $327,220/yr
- Per unit / month range
- $35 – $107
Facade safety — Local Law 11
The latest available FISP filing classified the facade as Safe — no repairs were required at that inspection. Facade inspections run on a fixed five-year cycle; future inspection, repair, and any assessment decisions remain building-specific.
QEWI = Qualified Exterior Wall Inspector — the licensed engineer the city requires to sign the report (the independent expert, not the managing agent). Source: NYC DOB facade filings (FISP) · The Roebling Research Library.
See the full facade history →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.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Jun 2, 2026 | 5L | 2 BR · 2 BA · 1,400 sf | $1,100,000 | $786/sf | +0.5% |
| Apr 30, 2026 | 19F | 1 BR · 1 BA | $670,000 | -0.7% | |
| Mar 11, 2026 | 2E | 2 BR · 2 BA | $960,000 | -8.6% | |
| Mar 11, 2026 | 7J | 1 BA | $437,000 | -2.7% | |
| Feb 3, 2026 | 16N | 1 BR · 1 BA · 800 sf | $600,000 | $750/sf | -19.9% |
| Jan 28, 2026 | 8P | 1 BR · 1 BA | $864,000 | -3.5% | |
| Jan 20, 2026 | 7M | 2 BR · 2 BA | $1,705,000 | +14.0% | |
| Dec 3, 2025 | 20M | 4 BR · 3 BA | $2,650,000 | -29.3% |
Market read. Most recent trades (2026) cleared a median $725/sf across 2 sales. Median listing discount 3.7% 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.
Other recent transfers
| Date | Unit | Price |
|---|---|---|
| Oct 27, 2020 | 18EF | $1,825,000 |
| Jun 4, 2003 | 18P | $450,000 |
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 1-01421-0001) 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.
What to know if you’re buying
This is full-service postwar value in Lenox Hill. Doorman service, an elevatored building, and a central location at pricing more accessible than the avenues to the west.
The large shareholder base helps carrying costs. A 256-unit building spreads operating and capital costs widely, which supports maintenance affordability — confirm the current maintenance, assessment history, and reserve position in diligence.
Co-op financial policy governs the purchase. Expect board review, financing limits, a flip tax, and sublet rules; confirm the current terms at offer stage.
The location is the lifestyle. A doorman building in the center of Lenox Hill, near the Park, the 6 train, and the full Upper East Side retail and dining base.
What to know if you’re selling
Lead with full-service value and location. The doorman service, the elevatored postwar building, and the central Lenox Hill address are the marketing assets.
Price to the building's own comps. With ~256 units, the persuasive evidence is 1131 Third's own recent trades adjusted for floor, exposure, and condition.
Closing timelines are co-op standard. Plan for roughly 6–10 weeks from contract to closing, subject to board package and approval pacing.
Comparable buildings
If you're considering 1131 Third Avenue, also evaluate:
- 160 East 65th Street — Lenox Hill full-service building nearby
- 1206 First Avenue — postwar Upper East Side cooperative for a comparable tier
- 1402 Third Avenue — postwar Upper East Side cooperative nearby
- 44 East 65th Street — Lenox Hill pre-war co-op for a vintage contrast
- 127 East 64th Street — Lenox Hill co-op nearby
The neighborhood
For the full corridor — architecture, schools, transit, and pricing across Upper East Side — read The Roebling Team Guide to Upper East Side.
The full playbook — what goes in the package, how boards read your financials, the interview, and the timeline — plus sample cover, reference, and personal letters you can adapt.
Considering a move at 1131 Third Avenue?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 1131 Third Avenue 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.