115 East 23rd Street

115 East 23rd Street has about 69,000 square feet of floor area in total, including 65,000 square feet of office and 5,000 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 1913 as the year built, with a major alteration recorded in 1968. The building is 12 floors tall.

City records list 115-117 East 23rd Street on the same tax lot (BBL 1008790009) as 115 East 23rd Street. A space listed on Leasemark at any of these addresses shows up on this page.

115 East 23rd Street 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 115 East 23rd Street, New York, NY 10010, in Flatiron.

The lot is in the C6-4A zoning district. PLUTO lists a built floor area ratio (FAR) of 11.1 and a maximum commercial FAR of 10 for this lot.

The closest subway station to 115 East 23rd Street 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 WALTOX CORPORATION N.V. as the owner of record of 115 East 23rd Street (BBL 1008790009). Deeds and mortgages for the lot are public in ACRIS, the city's property records system.

115 East 23rd Street reported an ENERGY STAR score of 58 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 58 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 74.8 kBtu per square foot, 10% below the national median of 83.1 for a similar property. Its greenhouse gas emissions were about 437 metric tons of CO2e (6.33 kg per square foot).

In the 12 months to September 2026, the Department of Buildings issued first permits for 3 jobs at 115 East 23rd Street. In the last two years, interior work was permitted on 2 floors (floors 1 and 9 and the cellar). The newest build-out, on floor 1 and the cellar, was first permitted in June 2026 (construction, plumbing, sprinklers; filed cost estimate $100,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1008790009. 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 $7.33 million for 115 East 23rd Street. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $795,017 a year, roughly $11.52 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1008790009 show the actual bill.

For tax year 2026/27, the NYC Department of Finance puts the market value of 115 East 23rd Street at $18.4 million ($3.93 million of it land) and its assessed value at $8.27 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 37% from 2022/23 ($13.4 million) to 2026/27.

Owners registered 2 storefronts at 115 East 23rd Street for December 31, 2024, 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 115 East 23rd Street 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.