310 East 70th Street
310 East 70th Street, New York, NY 10021
Lenox Hill, Upper East Side
BBL 1014440043 · BIN 1044830
- Year built
- 1959
- Type
- Cooperative
- Units
- 134
- Floors
- 12
- Landmark
- No
- Pets
- Pets permitted
Every recorded sale at this building, 2003–2026
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- Studio median
- $412K
- Recent range
- $345K – $2.4M
- Listing discount
- 2.1%
- Recorded transfers
- 159
310 East 70th Street is a full-service white-brick postwar cooperative in the heart of Lenox Hill — a 1959 building on a quiet residential block between First and Second Avenues that offers the amenity depth of a large postwar co-op at accessible cross-street pricing. With 134 apartments across 12 floors, it is sized to support a full staff, an attended entrance, and an on-site garage while retaining the operational manageability of a mid-scale building.
The building's appeal rests on a combination that is genuinely useful for a co-op: permissive pet and pied-à-terre policies alongside relatively high financing flexibility. Public records indicate the cooperative permits up to 75% financing on fixed-rate mortgages — generous by prewar co-op standards — and welcomes both pets and pied-à-terre owners. For buyers who want postwar light, a roof deck, a garage, and a full-service address in Lenox Hill without a co-op's typical financing constraints, 310 East 70th is a structurally strong option.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $73,545/yr
- Per unit / month range
- $0 – $45
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 →Management & transfer contacts
- Sublet policy
- Must own 5 consecutive yrs before subleasing; max 2-yr term then 5-yr wait; sublease fee = 10% annual maintenance; subtenants no pets
- Pied-à-terre
- Allowed
- Notable fees
- Buyer processing $750; credit check $75/applicant; move-in/out deposits $1,000; refinance $400; sublet renewal $150; max financing 75% (fixed only); 47% tax deductibility
Recent sales
As a cooperative, 310 East 70th Street trades on a price-per-room and maintenance-driven basis rather than the price-per-square-foot framing used for condominiums. Value here reflects the building's postwar layouts — efficient studio-through-two-bedroom lines with good light — its full-service operation and roof deck, and its Lenox Hill cross-street location, which sits at a discount to the Park-and-Fifth corridor.
Two policy features support liquidity and pricing relative to peer co-ops: the reported 75% financing ceiling, which widens the qualified-buyer pool, and the permissive pet and pied-à-terre stance. Monthly maintenance covers heat, water, and gas; buyers should weigh maintenance and any assessments against comparable buildings. Specific closed prices vary by floor, line, light, and condition, and should be underwritten against current recorded transfers and in-building comparables rather than headline averages.
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 |
|---|---|---|---|---|---|
| Apr 21, 2026 | 10E | 2 BR · 2 BA | $1,350,000 | -3.2% | |
| Apr 7, 2026 | 10L | 1 BR · 1 BA · 900 sf | $520,000 | $578/sf | -3.7% |
| Sep 4, 2025 | 4LM | 4 BR · 3 BA · 2,214 sf | $2,386,000 | $1,078/sf | -0.4% |
| Jul 7, 2025 | 4JK | 3 BR · 3 BA | $2,250,000 | +18.7% | |
| Jan 13, 2025 | 12Q | 2 BR · 1 BA · 900 sf | $895,000 | $994/sf | -0.6% |
| Jan 6, 2025 | 7G | 1 BA | $412,000 | +9.9% | |
| Nov 22, 2024 | 10J | 1 BA · 525 sf | $420,000 | $800/sf | +10.5% |
| Nov 13, 2024 | 11S | 1 BR · 1 BA | $799,000 | -8.7% |
Market read. Most recent trades (2026) cleared a median $580/sf across 1 sale. Median listing discount 2.7% 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.
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 1-01444-0043) 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
- Financing flexibility is a real advantage. A reported ceiling of up to 75% is generous for a co-op and broadens the buyer pool; confirm the current figure with the managing agent.
- Policies are owner-friendly. Pets and pied-à-terre use are permitted, which is not universal among postwar co-ops and supports both use and resale.
- The amenity set is complete for the vintage — doorman, live-in super, roof deck, storage, bike room, and a discounted resident garage reachable by elevator.
- Confirm the house rules on laundry and alterations. In-unit washer/dryers are reported as not permitted; verify before planning any renovation.
- Expect a board interview and standard co-op diligence, with maintenance covering heat, water, and gas.
What to know if you’re selling
- Lead with financing and policy flexibility. The reported 75% financing ceiling plus pet and pied-à-terre allowances are strong talking points against more restrictive neighboring co-ops.
- Highlight the full-service package and roof deck, and the convenience of an on-site discounted garage — meaningful in this pocket of Lenox Hill.
- Position maintenance clearly. Coverage of heat, water, and gas is a value point when documented against peer buildings.
- Anchor pricing to recent in-building and immediate-block comparables, adjusted for floor, line, and condition.
Comparable buildings
- 404 East 66th Street (Hardenbrook House) — nearby Lenox Hill condominium
- 304 East 65th Street (The Rio) — nearby full-service Lenox Hill condominium
- 1440 Second Avenue — nearby full-service Lenox Hill cooperative
- 308 East 72nd Street — nearby Lenox Hill peer
- 188 East 70th Street — same cross-street Lenox Hill peer
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 310 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.
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 310 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.