43 West 23rd Street

43 West 23rd Street has about 92,000 square feet of floor area in total, including 77,000 square feet of office and 15,000 square feet of retail, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.

The Landmarks Preservation Commission's building records date 43 West 23rd Street to 1893-1894, designed by Henry J. Hardenbergh. The building is 8 floors tall.

Henry J. Hardenbergh, according to the Landmarks Preservation Commission's building records, which list the style as neo-Renaissance and its original use as a store.

City records list 43-47 West 23rd Street and 24-28 West 24th Street on the same tax lot (BBL 1008250017) as 43 West 23rd Street. A space listed on Leasemark at any of these addresses shows up on this page.

43 West 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 43 West 23rd Street, New York, NY 10010, in Flatiron.

The lot is in the M1-8A/R11 zoning district. PLUTO lists a built floor area ratio (FAR) of 7.84 and a maximum commercial FAR of 12 for this lot. It is inside the Ladies' Mile Historic District, so exterior changes go through the Landmarks Preservation Commission.

The closest subway station to 43 West 23rd Street is 23 St (the F and M trains), about 500 feet away in a straight line, roughly 2 minutes on foot. Also nearby: 23 St (the R and W trains), 3 min walk; 28 St (the 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 LADIES MILE, LLC as the owner of record of 43 West 23rd Street (BBL 1008250017). 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.

In the 12 months to September 2026, the Department of Buildings issued first permits for 2 jobs at 43 West 23rd Street. In the last two years, interior work was permitted on 4 floors (floors 3, 4, 7 and 8). The newest build-out, on floors 3 and 4, was first permitted in March 2026 (construction, plumbing; filed cost estimate $100,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1008250017. 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 $15.1 million for 43 West 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 $1.64 million a year, roughly $17.78 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1008250017 show the actual bill.

For tax year 2026/27, the NYC Department of Finance puts the market value of 43 West 23rd Street at $38.4 million ($4.91 million of it land) and its assessed value at $17.3 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 48% from 2022/23 ($25.9 million) to 2026/27.

Owners registered one storefront at 43 West 23rd Street for December 31, 2024, the newest annual filing the city has published, and it was not 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 43 West 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.