56 West 66th Street

56 West 66th Street has about 43,000 square feet of floor area in total, including 43,000 square feet of office, 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 56 West 66th Street to 1900-1903, designed by Horgan & Slattery. The building is 4 floors tall.

Horgan & Slattery, according to the Landmarks Preservation Commission's building records, which list the style as Medieval and its original use as an armory.

The tax lot at 56 West 66th Street includes First Battery Armory, an individual landmark designated August 1, 1989 (LP-01670). Changes to a designated landmark, including many storefront, window and signage changes, need a permit from the Landmarks Preservation Commission.

City records list 52-56 West 66th Street on the same tax lot (BBL 1011180052) as 56 West 66th Street. A space listed on Leasemark at any of these addresses shows up on this page.

56 West 66th Street is in ZIP code 10023, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 56 West 66th Street, New York, NY 10023, in the Upper West Side.

The lot is in the C4-7 zoning district. PLUTO lists a built floor area ratio (FAR) of 2.43 and a maximum commercial FAR of 10 for this lot.

The closest subway station to 56 West 66th Street is 66 St-Lincoln Center (the 1 train), about 400 feet away in a straight line, roughly 2 minutes on foot. The MTA lists it as an accessible station. Also nearby: 72 St (the B and C trains), 6 min walk; 59 St-Columbus Circle (the 1, A, B, C and D trains), 7 min walk. Walking times are straight-line estimates; the street route is longer.

The NYC Department of Finance's 2026/27 assessment roll lists HEBREW UNION COLLEGE JEWISH INSTITUTE OF RELIGIO as the owner of record of 56 West 66th Street (BBL 1011180052). Deeds and mortgages for the lot are public in ACRIS, the city's property records system.

56 West 66th Street last sold in February 2025 for $32 million, according to the deed recorded with the city. AMERICAN BROADCASTING COMPANIES, INC. sold it to HEBREW UNION COLLEGE JEWISH INSTITUTE OF RELIGIO. That comes to about $750 per square foot of floor area. The deed is ACRIS document 2025020700702001 (BBL 1011180052) 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.

In the 12 months to October 2026, the Department of Buildings issued first permits for 3 jobs at 56 West 66th Street. In the last two years, interior work was permitted on 3 floors (floors 1 to 3, the cellar and the penthouse). The newest build-out, on floors 1 to 3, the cellar and the penthouse, was first permitted in November 2025 (construction, mechanical, plumbing, sprinklers, structural; filed cost estimate $10 million). These are the Department of Buildings' DOB NOW work permits for tax lot 1011180052. 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 exemptions covering the whole taxable value of 56 West 66th Street, so there is no property tax on the roll to estimate. That is common for government, nonprofit and payment-in-lieu-of-taxes (PILOT) properties. The city's property tax records for BBL 1011180052 show what is actually billed.

For tax year 2026/27, the NYC Department of Finance puts the market value of 56 West 66th Street at $12.6 million ($5.01 million of it land) and its assessed value at $5.68 million, the 45% of market value the city assesses for Class 4 property. The city's market value fell 2% from 2022/23 ($12.9 million) to 2026/27.

No space at 56 West 66th 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.