Harlem's 125th Street corridor is a major retail spine with national tenants, and the neighborhood has seen new office and lab development around Columbia's Manhattanville campus.
Building figures are existing stock from NYC PLUTO 26v2 tax lot records, not space on the market. More below.
On Leasemark No flex and creative space for lease and no requirements posted in Harlem yet. Post yours and it is matched the day it goes up.
New flex / creative spaces in Harlem are matched to requirements the day they are posted. Post yours and be first in line.
No live requirements in Harlem yet. These labeled examples show what tenants post. Owners: list a space and we match it against every new requirement automatically.
Posted by the tenant · Fitness
NYC tax lot records
What already stands here, from the city's own property data. Useful for sizing a search before a single space is listed.
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-09-30. Counts cover tax lots with commercial floor area within about 0.6 mi of Harlem's commercial core, and each lot counts toward one neighborhood only, so boundaries are approximate. Building figures are the city's floor-area estimates, not available space.
MTA station data
Every station within about 0.6 mi of Harlem's commercial core, closest first. Stations joined by a free transfer count once.
The 1, 2, 3, 4, 5, 6, A, B, C and D trains stop within about 0.6 mi of Harlem's core.
Source: Metropolitan Transportation Authority, MTA Subway Stations, pulled 2026-09-30. Walking times are straight-line estimates from the nearest point of Harlem's commercial core (the same area as the building counts), so the street route is longer. Accessibility is the MTA's rating for the named station. PATH, LIRR, Metro-North and ferries are not in this data.
Plain-English guides to square footage, rent and lease terms in New York, and free calculators to run your own numbers.
About 150 to 260 rentable SF per employee in NYC when everyone comes in, less with shared desks: tables by team size and layout, then how to size from your busiest day.
Rentable vs usable square feet in NYC: what the loss factor is, how to calculate it, and why two 5,000 SF suites at the same rent can be very different deals.
Gross, modified gross or triple net: how NYC leases split taxes, operating costs and electricity, what the asking rent leaves out, and how to compare two spaces fairly.
Pricing depends on building class, floor, condition and lease length. Post a requirement with your budget and Leasemark will match you with spaces that fit it as they are listed.
Post a requirement on Leasemark. Owners and listing brokers see what you need (without your contact details) and can respond with spaces, including ones that are not on the market yet. You choose who gets an intro.
New York City's PLUTO tax lot data (26v2) records about 7.7 million square feet of office floor area across 311 properties in the part of Harlem Leasemark covers. The largest by that measure is 721 Esplanade Gardens Plaza, at about 294,000 square feet. That is the existing building stock, not space currently for lease.
17 subway stations sit within about 0.6 mi of Harlem's commercial core, served by the 1, 2, 3, 4, 5, 6, A, B, C and D trains. The closest is 145 St (A B C D), roughly 3 minutes on foot; then 116 St (2 3), 125 St (2 3), 125 St (A B C D), 116 St (B C), 135 St (2 3), Harlem-148 St (3) and 10 more. Walking times are straight-line estimates from MTA station data.
No. Harlem is north of 96th Street, and the city repealed the Commercial Rent Tax for premises north of the center line of 96th Street, so a commercial lease here does not pay it at any rent. Space south of 96th Street does.
Yes. Posting a space or a requirement is free. Contact details are only shared when both sides accept an intro.