310 East 70th Street
310 East 70th Street, New York, NY 10021
- 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.
- 2BR median
- $1.1M
- Recent range
- $520K – $2.4M
- Listing discount
- 2.1%
- Recorded transfers
- 87
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 facade passed its last inspection with no required repairs — nothing to budget for here, and no facade assessment on the horizon for roughly five years.
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 23, 2026 | 10E | 2 BR · 2 BA | $1,350,000 | -3.2% | |
| Apr 13, 2026 | 10L | 1 BR · 1 BA · 900 sf | $520,000 | $578/sf | -3.7% |
| Nov 7, 2025 | 4LM | 4 BR · 3 BA · 2,214 sf | $2,386,000 | $1,078/sf | -0.4% |
| Jul 15, 2025 | 4JK | 3 BR · 3 BA | $2,250,000 | +18.7% | |
| Jan 21, 2025 | 12Q | 2 BR · 1 BA · 900 sf | $895,000 | $994/sf | -0.6% |
| Dec 5, 2024 | 12P | 3 BR · 2 BA · 1,450 sf | $1,650,000 | $1,138/sf | off-mkt |
| Nov 21, 2024 | 11S | 1 BR · 1 BA | $799,000 | -8.7% | |
| Jun 30, 2023 | 9A | 1 BR · 1 BA · 950 sf | $710,000 | $747/sf | -2.1% |
Market read. Most recent trades (2026) cleared a median $578/sf across 1 sale. Median listing discount 3.3% 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 |
|---|---|---|
| Mar 2, 2026 | 1M | $1,300,000 |
| Sep 16, 2021 | 9M | $1,150,000 |
| Aug 18, 2021 | 3K | $1,050,000 |
| Apr 30, 2021 | 7L | $785,000 |
| Feb 17, 2015 | 5K | $1,250,000 |
| Sep 10, 2013 | 11 P | $1,695,000 |
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 1-01444-0043) 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 Roebling Team at 310 East 70th Street
The Roebling Team specializes in Upper East Side transactions, with particular depth in Lenox Hill's postwar cooperative inventory. We track financing rules, policy, maintenance, and closing detail building by building, and we bring that granularity to both buyers and sellers at 310 East 70th Street. If you are weighing a purchase or a sale here, we can walk you through the current picture and how this building compares to its immediate peers.
The neighborhood
For the full corridor — architecture, schools, transit, and pricing across Upper East Side — read The Roebling Team Guide to Upper East Side.
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