277 Park Avenue

277 Park Avenue has about 1.3 million square feet of floor area in total, including 1.2 million square feet of office and 66,000 square feet of retail, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.

City records list 1963 as the year built. The building is 50 floors tall.

City records list 101 East 47th Street, 100-102 East 48th Street, 500-514 Lexington Avenue and 273-283 Park Avenue on the same tax lot (BBL 1013027501) as 277 Park Avenue. A space listed on Leasemark at any of these addresses shows up on this page.

City records give two ZIP codes for this tax lot: 10017 in NYC PLUTO 26v2 and 10172 on the Department of Finance's assessment roll. Some large New York buildings have a ZIP code of their own beside the area's, so check with the building's management which one it uses before you rely on either.

The lot is in the C5-3 zoning district. PLUTO lists a built floor area ratio (FAR) of 7.81 and a maximum commercial FAR of 15 for this lot.

The closest subway station to 277 Park Avenue is 51 St (the 6, E and F trains, connected to Lexington Av/53 St), about 950 feet away in a straight line, roughly 4 minutes on foot. The MTA lists it as an accessible station. Also nearby: Grand Central-42 St (the 4, 5, 6, 7 and S trains), 6 min walk; 5 Av/53 St (the E and F trains), 7 min walk. Walking times are straight-line estimates; the street route is longer.

277 Park Avenue is a condominium of 49 tax lots. 277 PARK AVENUE, LLC, one of 3 owners of record on the roll, owns the units that make up 59% of its market value. That is from the NYC Department of Finance's 2026/27 assessment roll (BBL 1013027501). Deeds and mortgages for each unit are public in ACRIS, the city's property records system.

Leasemark does not have the building's tenant roster, but SEC filings name companies with offices at 277 Park Avenue. 2 public companies report the address as their principal executive office: STEPSTONE GROUP INC. (STEP) and STEPSTONE PRIVATE CREDIT FUND LLC. One investment manager files 13F holdings reports from the address: HIGHBRIDGE CAPITAL MANAGEMENT LLC. Private companies do not file with the SEC, so the full list of tenants is longer, and a company can also report a building it owns.

277 Park Avenue reported an ENERGY STAR score of 55 for calendar year 2024 in its Local Law 84 benchmarking filing. Under Local Law 33, as amended by Local Law 95 of 2019, a score of 85 or higher earns an A, 70 to 84 a B, 55 to 69 a C and under 55 a D, so 55 earns a C. The Department of Buildings assigns the grade a building posts, so the posted label can differ if a filing was corrected. Its site energy use came to 121 kBtu per square foot, 7% below the national median of 129.7 for a similar property. Its greenhouse gas emissions were about 19,287 metric tons of CO2e (11.05 kg per square foot).

At its 2024 energy use, 277 Park Avenue comes to about 13,790 metric tons of CO2e a year under Local Law 97's coefficients, against a limit of 14,049 tons for 2024 to 2029 (98% of the limit), so it would owe no penalty. From 2030 the limit drops to 5,466 tons and the same energy use counts as about 9,048 tons, about 3,583 tons over, or an estimated $960,000 a year unless the building cuts its emissions. This is an estimate from the owner's 2024 benchmarking filing using the coefficients and per-use limits in the law and the Department of Buildings rule, at $268 per ton over. It is not the building's Local Law 97 report, which can count credits and deductions this estimate cannot.

In the 12 months to October 2026, the Department of Buildings issued first permits for 49 jobs at 277 Park Avenue. In the last two years, interior work was permitted on 24 floors (floors 1, 2, 8, 9, 12 to 14, 17 to 19, 21 to 23, 32, 35, 36, 40, 42 to 44 and 47 to 50, the basement and the ground floor). The newest build-out, on floor 35, was first permitted in October 2026 (construction, mechanical, plumbing, sprinklers; filed cost estimate $4.8 million). These are the Department of Buildings' DOB NOW work permits for tax lot 1013027501. A permit is approval to do the work; it does not say who the work is for or whether it is finished.

The Department of Finance's 2026/27 assessment roll lists a taxable value of $377.7 million for 277 Park Avenue (the sum of its 49 condominium tax lots). At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $41 million a year, roughly $32.25 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1013027501 show the actual bill.

For tax year 2026/27, the NYC Department of Finance puts the market value of 277 Park Avenue at $886.2 million ($147.1 million of it land) and its assessed value at $398.8 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 13% from 2022/23 ($787.1 million) to 2026/27.

Owners registered 11 storefronts at 277 Park Avenue for December 31, 2025, the newest annual filing the city has published, and 2 of them stood vacant that day. At least one storefront here has been reported vacant at the end of every year since 2019. These are the owners' filings with the Department of Finance under Local Law 157, so a storefront vacant on December 31, 2025 may have been leased since. Owners and brokers can list a storefront on Leasemark for free.

No space at 277 Park Avenue is listed on Leasemark right now. Nearby on Leasemark: office space for lease at 783 Madison 4th Floor in the Upper East Side (994 SF, $66.40/SF/yr). Owners and brokers can list space here for free, and tenants can post a requirement to be matched when space opens up.