450 Park Avenue

450 Park Avenue has about 297,000 square feet of floor area in total, including 265,000 square feet of office and 32,000 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 1972 as the year built, with a major alteration recorded in 1989. The building is 32 floors tall.

City records list 52-58 East 57th Street and 444-456 Park Avenue on the same tax lot (BBL 1012920037) as 450 Park Avenue. A space listed on Leasemark at any of these addresses shows up on this page.

450 Park Avenue is in ZIP code 10022, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 450 Park Avenue, New York, NY 10022, in Midtown.

The lot is in the C5-3 zoning district. PLUTO lists a built floor area ratio (FAR) of 22.2 and a maximum commercial FAR of 15 for this lot.

The closest subway station to 450 Park Avenue is 59 St (the 4, 5, 6, N, R and W trains, connected to Lexington Av/59 St), about 0.2 miles away in a straight line, roughly 4 minutes on foot. Also nearby: 5 Av/53 St (the E and F trains), 4 min walk; 5 Av/59 St (the N, R and W trains), 5 min walk. Walking times are straight-line estimates; the street route is longer.

The NYC Department of Finance's 2026/27 assessment roll lists 450 PARK FEE OWNER LP as the owner of record of 450 Park Avenue (BBL 1012920037). Big buildings are usually held through a company set up for that one property, so the name on the roll can differ from the landlord's brand or the managing agent. Deeds and mortgages for the lot 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 450 Park Avenue. 3 public companies report the address as their principal executive office: MUZINICH BDC, INC.; WILLOW TREE CAPITAL CORP; and MUZINICH CORPORATE LENDING INCOME FUND, INC.. 6 investment managers and funds file 13F holdings reports from the address, including Affinity Asset Advisors, LLC; Avantyr Capital Partners, LP; and MayTech Global Investments, 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.

450 Park Avenue last sold in June 2022 for $445 million, according to the deed recorded with the city. 450 PROPERTY OWNER (US), LLC sold it to 450 PARK FEE OWNER LP. That comes to about $1,499 per square foot of floor area. The deed is ACRIS document 2022062800967002 (BBL 1012920037) in the city's property records. A sale of the company that owns a building is not recorded as a deed, so it would not show there.

450 Park Avenue reported an ENERGY STAR score of 38 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 38 earns a D. 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 102 kBtu per square foot, 16% above the national median of 88.2 for a similar property. Its greenhouse gas emissions were about 2,842 metric tons of CO2e (9.05 kg per square foot).

At its 2024 energy use, 450 Park Avenue comes to about 2,023 metric tons of CO2e a year under Local Law 97's coefficients, against a limit of 2,381 tons for 2024 to 2029 (85% of the limit), so it would owe no penalty. From 2030 the limit drops to 845 tons and the same energy use counts as about 1,374 tons, about 529 tons over, or an estimated $142,000 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 7 jobs at 450 Park Avenue. In the last two years, interior work was permitted on 3 floors (floors 6, 12 and 26). The newest build-out, on floor 6, was first permitted in April 2026 (construction, mechanical, plumbing, sprinklers; filed cost estimate $1.5 million). These are the Department of Buildings' DOB NOW work permits for tax lot 1012920037. 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 $85.4 million for 450 Park Avenue. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $9.26 million a year, roughly $31.19 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1012920037 show the actual bill.

For tax year 2026/27, the NYC Department of Finance puts the market value of 450 Park Avenue at $189.7 million ($30.1 million of it land) and its assessed value at $85.4 million, the 45% of market value the city assesses for Class 4 property. The city's market value fell 26% from 2022/23 ($255.3 million) to 2026/27.

Owners registered 2 storefronts at 450 Park Avenue for December 31, 2025, the newest annual filing the city has published, and none stood vacant that day. These are the owners' filings with the Department of Finance under Local Law 157, so a storefront may have come free since. Owners and brokers can list a storefront on Leasemark for free.

No space at 450 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.