21 West 46th Street

21 West 46th Street has about 75,000 square feet of floor area in total, including 69,000 square feet of office and 6,000 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 1929 as the year built. The building is 15 floors tall.

City records list 21-27 West 46th Street on the same tax lot (BBL 1012620024) as 21 West 46th Street. A space listed on Leasemark at any of these addresses shows up on this page.

21 West 46th Street is in ZIP code 10036, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 21 West 46th Street, New York, NY 10036, in Midtown.

The lot is in the C6-4.5 zoning district. PLUTO lists a built floor area ratio (FAR) of 11.16 and a maximum commercial FAR of 12 for this lot.

The closest subway station to 21 West 46th Street is 47-50 Sts-Rockefeller Ctr (the B, D, F and M trains), about 800 feet away in a straight line, roughly 3 minutes on foot. The MTA lists it as an accessible station. Also nearby: 5 Av (the 7, B, D, F and M trains, connected to 42 St-Bryant Pk), 4 min walk; Grand Central-42 St (the 4, 5, 6, 7 and S trains), 6 min walk. Walking times are straight-line estimates; the street route is longer.

The NYC Department of Finance's 2026/27 assessment roll lists MARTZ HOLDINGS DE LLC as the owner of record of 21 West 46th Street (BBL 1012620024). 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.

21 West 46th Street last sold in January 2025 for $43 million, according to the deed recorded with the city. 21 WEST 46TH STREET LLC sold it to MARTZ HOLDINGS DE LLC. That comes to about $573 per square foot of floor area. The deed is ACRIS document 2025012600011001 (BBL 1012620024) 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.

21 West 46th Street reported an ENERGY STAR score of 84 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 84 earns a B. 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 47.7 kBtu per square foot, 42% below the national median of 82.9 for a similar property. Its greenhouse gas emissions were about 328 metric tons of CO2e (4.37 kg per square foot).

In the 12 months to September 2026, the Department of Buildings issued first permits for 3 jobs at 21 West 46th Street. In the last two years, interior work was permitted on one floor (floor 2 and the cellar). The newest build-out, on floor 2, was first permitted in August 2025 (construction; filed cost estimate $100,000). A sidewalk shed permit here is active until December 22, 2026. These are the Department of Buildings' DOB NOW work permits for tax lot 1012620024. 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 $7.5 million for 21 West 46th Street. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $813,958 a year, roughly $10.85 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1012620024 show the actual bill.

For tax year 2026/27, the NYC Department of Finance puts the market value of 21 West 46th Street at $20.4 million ($4.03 million of it land) and its assessed value at $9.2 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 38% from 2022/23 ($14.9 million) to 2026/27.

Owners registered 2 storefronts at 21 West 46th 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 21 West 46th 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.