Manhattan · Union Square
Commercial buildings on Union Square
8 large commercial buildings on Union Square in Manhattan, from 1-3 Union Square to 44 Union Square, with about 828,000 square feet of commercial space. In address order, with each building's size, age, last sale and nearest subway from the city's own records.
- Buildings
- 8
- Commercial space
- 828K SF
- Median year built
- 1912
- Tallest
- 41 Union Square, 16 floors
No space on Union Square is listed on Leasemark yet. Own or broker space here? List it free and it is matched against every active requirement the day it goes up, or import a spreadsheet of up to 50 spaces at once.
NYC tax lot records
Every large building on Union Square, in address order
From 1-3 Union Square to 44 Union Square. 2 corner or through-block buildings have a main address on another street and are listed at their Union Square address.
Looking for a particular address?
Spreadsheet
Download these 8 buildings
Owner of record, size, floors, year built, zoning, estimated property tax, last sale, energy grade and nearest subway for every building on this list, as a CSV file for Excel or Google Sheets. Free with a Leasemark account.
City records and estimates, not availability: a building on the list is not a space for lease.
- 4 Union SquareMain address: 44 East 14th Street
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-05, with other addresses on each lot from the city's Property Address Directory and sales from ACRIS. Buildings with at least 35,000 square feet of commercial space in the neighborhoods Leasemark covers; floor areas are the city's estimates for whole buildings, not available space.
Largest and oldest on Union Square
Largest by commercial space
Buildings with their main address on Union Square.
NYC Department of Finance
Property tax on Union Square
Estimated yearly tax per square foot of floor area across the 8 taxed large buildings on Union Square, from the 2026/27 assessment roll: taxable value after exemptions times the Class 4 rate, before abatements.
Largest estimated bills
On Union Square
- Median: $23.53 a square foot a year; middle half $19.48 to $25.41.
- Manhattan median across every tracked building: $13.55 a square foot.
- None of the buildings is fully exempt.
MTA station data
Subway along Union Square
The closest station to each building on the list, in the order the street reaches them. Walks are straight-line estimates.
- 14 St-Union Sq
Source: Metropolitan Transportation Authority, MTA Subway Stations, pulled 2026-10-05.
Questions about Union Square
How many commercial buildings are on Union Square?
Leasemark tracks 8 large commercial buildings on Union Square in Manhattan: 6 with their main address on Union Square and 2 corner or through-block buildings with a Union Square address as well. Together they hold about 828,000 square feet of commercial space, from 1-3 Union Square to 44 Union Square in Union Square. The list counts buildings with at least 35,000 square feet of commercial space in the neighborhoods Leasemark covers.
What is the largest commercial building on Union Square?
The largest is 32 Union Square, with 143,054 square feet of commercial space on 12 floors, built in 1903. Next come 5 Union Square (92K SF) and 17 Union Square (88K SF). The tallest is 41 Union Square, 16 floors.
How old are the buildings on Union Square?
The median commercial building on Union Square was built in 1912. The oldest with its main address here is 5 Union Square (1900) and the newest 29 Union Square (1959). 1 dates from before 1900, 5 date from 1900 to 1929, 1 dates from 1930 to 1959 and 1 dates from 1960 to 1989. One is a designated New York City landmark.
How much property tax do buildings on Union Square pay?
The median estimated tax across the 8 taxed large buildings on Union Square is about $23.53 a square foot of floor area a year on the Department of Finance's 2026/27 roll (middle half $19.48 to $25.41), against $13.55 across Manhattan. The largest estimated bill, about $6.43 million a year, is for 44 East 14th Street. Estimates are before abatements, and tenants usually pay their share through the lease.
What subway lines are near Union Square?
The closest stations to the large buildings on Union Square, in the order the street reaches them, are 14 St-Union Sq (4 5 6 L N Q R W). Together they serve the 4, 5, 6, L, N, Q, R and W lines, per MTA station data.
Is there commercial space for lease on Union Square?
No space on Union Square is listed on Leasemark right now. Owners and brokers can list space here for free and it is matched against every active requirement the day it goes up; tenants can post a requirement to be matched when space opens up.