315 Park Avenue South

315 Park Avenue South has about 356,000 square feet of floor area in total, including 344,000 square feet of office and 12,000 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 1911 as the year built, with a major alteration recorded in 1986. The building is 20 floors tall.

City records list 100-114 East 24th Street and 313-321 Park Avenue South on the same tax lot (BBL 1008790081) as 315 Park Avenue South. A space listed on Leasemark at any of these addresses shows up on this page.

315 Park Avenue South is in ZIP code 10010, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 315 Park Avenue South, New York, NY 10010, in Flatiron.

The lot is in the C6-4A zoning district. PLUTO lists a built floor area ratio (FAR) of 25.01 and a maximum commercial FAR of 10 for this lot.

The closest subway station to 315 Park Avenue South is 23 St-Baruch College (the 6 train), about 350 feet away in a straight line, roughly 1 minute on foot. The MTA lists it as an accessible station. Also nearby: 28 St (the 6 train), 4 min walk; 23 St (the R and W trains), 4 min walk. Walking times are straight-line estimates; the street route is longer.

The NYC Department of Finance's 2026/27 assessment roll lists COLUMBIA REIT - 315 PARK AVENUE SOUTH, L LC as the owner of record of 315 Park Avenue South (BBL 1008790081). 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 315 Park Avenue South. 2 investment managers and funds file 13F holdings reports from the address: Walleye Capital LLC and Walleye Trading 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.

315 Park Avenue South last sold in January 2015 for $353.9 million, according to the deed recorded with the city. 315 HOLDINGS LLC (D/B/A 315 PARK HOLDINGS LLC) sold it to COLUMBIA REIT - 315 PARK AVENUE SOUTH, LLC. That comes to about $993 per square foot of floor area. The deed is ACRIS document 2015011300813001 (BBL 1008790081) 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.

315 Park Avenue South reported an ENERGY STAR score of 85 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 85 earns an A. 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 55.2 kBtu per square foot, 44% below the national median of 98.4 for a similar property. Its greenhouse gas emissions were about 1,949 metric tons of CO2e (5.47 kg per square foot).

At its 2024 energy use, 315 Park Avenue South comes to about 1,538 metric tons of CO2e a year under Local Law 97's coefficients, against a limit of 2,802 tons for 2024 to 2029 (55% of the limit), so it would owe no penalty. From 2030 the limit drops to 1,014 tons and the same energy use counts as about 969 tons, still under the limit. 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 11 jobs at 315 Park Avenue South. In the last two years, interior work was permitted on 6 floors (floors 1, 4, 8 to 10 and 19 and the cellar). The newest build-out, on floor 19, was first permitted in June 2026 (construction, mechanical; filed cost estimate $85,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1008790081. 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 $68.8 million for 315 Park Avenue South. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $7.46 million a year, roughly $20.93 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1008790081 show the actual bill.

For tax year 2026/27, the NYC Department of Finance puts the market value of 315 Park Avenue South at $152.8 million ($33 million of it land) and its assessed value at $68.8 million, the 45% of market value the city assesses for Class 4 property. The city's market value fell 1% from 2022/23 ($153.7 million) to 2026/27.

Owners registered 4 storefronts at 315 Park Avenue South for December 31, 2025, the newest annual filing the city has published, and none stood vacant that day. A year earlier, 1 of 4 stood vacant. 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 315 Park Avenue South is listed on Leasemark right now. Owners and brokers can list space here for free, and tenants can post a requirement to be matched when space opens up.