155 East 72nd Street

The building rises sixteen floors on a 90-by-102-foot lot with roughly 96,000 square feet of residential area — an average well north of 2,500 square feet per apartment before common space, which is the arithmetic behind the duplex plan. The base is two stories of rusticated limestone carrying an arched entrance under a canopy; above it the elevation is red brick with limestone trim, running to a terra-cotta cornice that the cooperative has repaired and partially replaced in successive façade cycles.

The interior courtyard is a real asset in a mid-block building. Rear-facing rooms look into open air rather than at a neighbor's wall, and the courtyard also carries mechanical work — the cooperative filed replacement of a section of the courtyard roof over the basement, including two new skylights, in 2023, and rebuilt the courtyard stairs and wall in 2017.

Apartment stock runs from simplex lines through the large duplexes that define the building. Renovation filings across two decades describe the recurring prewar program: maid's rooms absorbed into kitchens, through-wall air conditioning cut into masonry, and combinations of adjacent apartments. Two points follow for buyers. First, because the building is inside a historic district, any new masonry opening on the street elevation requires Landmarks approval before the Department of Buildings will permit it — several filings in the record do exactly that, and one apartment renovation was disapproved at plan examination before being refiled. Second, the apartment counts differ across records: the sources give 39, 37 and 34, while filings document combinations. Reconcile dates, definitions and the current certificate rather than assigning every discrepancy to those combinations.

The base carries roughly 2,200 square feet of professional office space, filed and refiled through 2026 as a doctor's office. It is recorded as a commercial component; the area and use alone do not establish who holds the income rights. Review its title or share allocation, lease and current financials to determine any net contribution to the corporation.

Management-sourced records describe an attended lobby, a live-in resident manager, a renovated lobby, and a fitness room. The fitness room is worth dating precisely: the cooperative filed a cellar-level tenant fitness room with the Department of Buildings in June 2022 and refiled it in August 2023, so it appears to be a recent addition to an otherwise traditional prewar amenity set rather than a long-standing feature. Confirm doorman coverage hours directly — a thirty-seven-apartment building supports a different staffing model than a two-hundred-unit house, and hours vary.

The façade is the operating story. The building has filed under the city's periodic façade inspection program in every cycle on record, and the results have been consistent: Safe With a Repair and Maintenance Program in Cycle 6 (2007), Cycle 7 (2011, later brought to Safe on a 2013 subsequent filing), Cycle 8 (2016), and Cycle 9 (filed December 2022). The Department of Buildings job record shows the corresponding work — general façade repairs and brick replacement in 2008, brickwork, lintels, pointing and partial terra-cotta cornice replacement in 2012, pointing, masonry, lintel and sill replacement plus the courtyard stairs in 2017, and a further round of brickwork, pointing, sills, lintels and stone patching filed in 2024 with a sidewalk shed. A ninety-eight-year-old brick-and-terra-cotta elevation inside a historic district is a permanent line item, not an episode. The record shows consistent filing, not current condition: buyers should ask for recent engineering reports, expect the maintenance to continue, and ask what the current cycle is costing.

Ownership form: Cooperative. Purchase means acquiring shares in 155 East 72nd Street Corp. and a proprietary lease, subject to board approval after a full financial package and an in-person interview. ACRIS confirms the mechanism: recorded transfers here are coded SP, single residential cooperative unit share transfers.

Financing: 50 percent maximum per management-sourced records, meaning at least half the purchase price in cash at closing. Verify in writing — the ceiling is a board policy and boards change it.

Post-closing liquidity: Not established in the materials reviewed. Upper East Side prewar boards typically expect meaningful liquid assets remaining after closing, often expressed as a multiple of annual maintenance and debt service, but the figure applied here was not found in the materials reviewed. Ask the managing agent before you write an offer.

Pets: Permitted per management-sourced records; weight and breed limits, if any, are in the house rules.

Pied-à-terre: Permitted case by case with board approval per management-sourced records. Case-by-case is not the same as permitted, and a non-primary-residence purchaser should get the board's posture confirmed before spending on diligence.

Subletting: Not documented in public records. Assume a seasoning period and a cap until the managing agent tells you otherwise.

Trusts, LLCs, co-purchase, guarantors and gifts: Not documented in public records. Cooperative boards treat all of these as discretionary. If your purchase structure requires any of them, resolve it with the managing agent before the package goes in.

Flip tax: Not documented in public records. The rate, the base, and whether it falls on the seller or is split are building-specific and material to a net-proceeds calculation.

Real estate taxes: The cooperative pays a single building-level tax bill and allocates it through maintenance. No 421-a, 485-x, or J-51 benefit appears on the lot in any assessment roll on record.

Recent sales

Recent transfers at this building, from The Roebling Research Library. 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.

Market read. $/sf is measured on the latest sales with reliable square footage (2016): a median $1,357/sf (recorded) across 1 sale. The building has traded as recently as 2026. Median listing discount 1.8% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.

Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01407-0026). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price.

Search the BBL, not the address. City records file this lot as 153 East 72 Street. If your attorney, appraiser, or automated valuation tool searched "155 East 72nd Street" and returned nothing, that is why. The BBL is 1014070026 and the BIN is 1042849.

Assume 37 apartments, not 39. The recorded count is 37 residential apartments plus one commercial unit. Combinations are documented, but the competing counts still need reconciliation against the current certificate and share schedule; do not infer share allocations from an apartment count.

Half in cash. The reported 50 percent financing ceiling affects the required cash at closing; no ranked failed-deal history is established here. Confirm it in writing early, and run the Co-op Board Qualification Calculator against the specific apartment before offering.

Get the whole policy stack from the managing agent in one request. Flip tax, sublet rules, post-closing liquidity, pied-à-terre posture, trust and LLC treatment, and the current assessment status were not established in this review. Ask for them together, in writing, before diligence spending starts.

Landmarks governs your renovation. Since 2010 this lot has been inside the Upper East Side Historic District Extension. Window replacement and new through-wall air-conditioning openings generally require LPC approval. Confirm whether the work qualifies for a staff permit or needs a Commission-reviewed Certificate of Appropriateness, and coordinate any DOB permit; visibility alone does not determine the permit type. Budget the time as well as the cost, and run the Renovation Cost Calculator with that sequence in mind.

Read the façade file. Cycle 9 was filed as Safe With a Repair and Maintenance Program in December 2022, and repair work was filed in 2024. Ask for the engineer's report, the scope, the cost, and how it is being funded.

Sell the plan, not the address. The duplexes are the reason a buyer chooses this building over a simplex co-op two blocks away. Floor plans and room counts do more work here than square-foot claims.

Pre-clear the policy questions. Buyers on this block are comparing against buildings that publish more. Having the financing ceiling, flip tax, sublet terms, and current assessment status in hand at first showing removes the friction that otherwise surfaces at contract.

Qualify on cash, early. With half the price required in equity, a buyer's liquidity picture matters more than their pre-approval letter. Screening for it before accepting an offer reduces the risk of a board rejection later.

Be straight about Landmarks. The exterior scope and applicable LPC permit route affect renovation planning; district status alone does not establish a fixed cost premium or delay. Pricing that in beats having a buyer discover it during their architect's review.

If you're considering 155 East 72nd Street, also evaluate:

• 117 East 72nd Street — prewar cooperative on the same block front, closer to Park; the step-up in address at a comparable scale
• 132 East 72nd Street — prewar cooperative directly across the street; the nearest like-for-like
• 158 East 72nd Street — cooperative on the same block toward Third Avenue
• 164 East 72nd Street — cooperative at the Third Avenue end of the block; the value entry on the street
• 114 East 72nd Street — 1963 building converted to cooperative in 1972; the postwar alternative with different financing and policy norms
• 1003 Lexington Avenue — boutique Lexington Avenue cooperative around the corner
• 1004 Lexington Avenue — cooperative on the same block of Lexington; the smaller-building alternative
• 1250 Third Avenue — full-service elevator cooperative on the avenue; more staff, less prewar detail
• 30 East 72nd Street — cooperative converted in 1967, west of Park; the trophy-corridor comparison
• 45 East 72nd Street — 1979 rental-to-cooperative conversion; a different vintage of the same tenure