Series B fintech needs 8,000 to 12,000 SF
Posted by the tenant · Fintech
- Where
- Midtown South, Flatiron +1
- Size
- 8,000 to 12,000 SF
- Budget
- to $85/SF
- Move in
- Feb 2027
Near subwayHigh ceilings
Owners: got a fit?I have a fit
Office space for sublease in Union Square
Union Square is one of the best-connected transit hubs in Manhattan, and its retail corridors on 14th Street and Broadway attract national brands. Office inventory is mostly boutique loft space favored by education, tech, and nonprofit tenants.
- Office stock
- 7.5M SF
- Office properties
- 132
- Largest office
- 114 Fifth Avenue
- Transit
- 4 5 6 L N Q R W at 14 St-Union Sq
Building figures are existing stock from NYC PLUTO 26v2 tax lot records, not space on the market. More below.
On Leasemark No office space for sublease and no requirements posted in Union Square yet. Post yours and it is matched the day it goes up.
Nothing listed here yet
New office spaces in Union Square are matched to requirements the day they are posted. Post yours and be first in line. The labeled example below shows how a space appears here; it is not on the market.
What a requirement here looks like
No live requirements in Union Square yet. These labeled examples show what tenants post. Owners: list a space and we match it against every new requirement automatically.
For owners and brokers
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NYC Department of Finance filings
Rent collected per square foot: office buildings in Manhattan
In 2024, 1,506 Manhattan office properties filed income statements with the city. Their median gross income was $52.08 per square foot, and the middle half collected between $38.22 and $74.58. The typical property's income was up 1% on 2023. The city publishes these figures by borough, not by neighborhood, so they cover Manhattan as a whole.
Gross income per square foot, 2024
Manhattan office buildings
- Median gross income
- $52.08/SF
- Middle half
- $38.22 to $74.58
- Typical change on 2023
- +1%
- Citywide median
- $39.05/SF
- Filings
- 1,506
Turn a price per square foot into monthly rentWhat tenants pay on top of rent
Source: NYC Department of Finance, FY 2027 RPIE 2024 Income and Expense Distributions (FY 2027 assessment roll, published January 2026), page 8. Owners of income-producing properties file a Real Property Income and Expense statement each year; gross income is everything a property collected in 2024 per square foot, as filed, with outlier and partial-year filers left out. It includes vacant space, concessions and older leases, so it is not an asking rent.
NYC tax lot records
Office buildings in Union Square
What already stands here, from the city's own property data. Useful for sizing a search before a single space is listed.
- Office space
- 7.5M SF
- Properties with office space
- 132
- All commercial space
- 12.3M SF
- Built before 1940
- 80%
Largest office buildings
All 57 large commercial buildings in Union SquareAge, height and zoning
- Median year built: 1909.
- Median height: 7 floors.
- Most common zoning districts: C6-1 (76), C6-4 (43), C6-2A (39).
- Historic districts: Ladies' Mile Historic District (78 lots), Gramercy Park Historic District (4 lots), Greenwich Village Historic District (3 lots).
- 28 lots are designated city landmarks.
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-16. Counts cover tax lots with commercial floor area within about 0.3 mi of Union Square'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
Subway stations in Union Square
Every station within about 0.5 mi of Union Square's commercial core, closest first. Stations joined by a free transfer count once.
- Stations
- 8
- Subway lines
- 13
- Fully accessible
- 3 of 8
- Closest
- 14 St-Union Sq, 1 min walk
The 8 stations
- 14 St-Union Sq
- 14 St
- 3 Av
- 23 St-Baruch College
- 23 St
- 8 St-NYU
- Astor Pl
- 23 St
Lines
The 1, 2, 3, 4, 5, 6, F, L, M, N, Q, R and W trains stop within about 0.5 mi of Union Square's core.
Step-free access
- 14 St-Union Sq (4 5 6 L N Q R W) is fully accessible.
- 14 St (1 2 3 F M) is fully accessible.
- 23 St-Baruch College (6) is fully accessible.
Source: Metropolitan Transportation Authority, MTA Subway Stations, pulled 2026-10-16. Walking times are straight-line estimates from the nearest point of Union Square'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.
NYC Department of Buildings permits
Office build-outs in Union Square
In the 12 months to October 2026, the Department of Buildings issued first permits for 75 interior build-outs in 36 of the 53 office buildings Leasemark tracks in Union Square, with work permitted on 95 floors in all. Their filed cost estimates add up to about $42 million.
Most build-outs, last 12 months
- 68% of the office buildings tracked here had a build-out, against 63% across Manhattan.
Source: NYC Department of Buildings, DOB NOW: Build Approved Permits, pulled 2026-10-24 (permits issued through 2026-10-22). A build-out groups interior jobs (construction, mechanical, plumbing, sprinklers and the like) on the same floors first permitted within 120 days of each other, dated by its first permit. Only the large buildings Leasemark tracks count (35,000 SF and up), not every permit in the neighborhood. Costs are the estimates filed with the jobs. A permit does not say who the work is for.
Before you sign
Plain-English guides to square footage, rent and lease terms in New York, and free calculators to run your own numbers.
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Subleasing office space in NYC: a practical guide
How office subleases work in New York, for both sides: landlord consent, recapture, pricing, the prime lease and the Commercial Rent Tax.
How much office space do you need per employee in 2026
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.
- Free calculator
Office space calculator
How many square feet your team needs, from headcount and layout to a rentable range.
- Free calculator
Commercial rent calculator
Turn a price per square foot into monthly and yearly rent, with increases, free rent and net effective rent.
- Free calculator
Commercial Rent Tax calculator
Whether a Manhattan lease owes the city's Commercial Rent Tax, and roughly how much a year.
Questions about office space in Union Square
Is there office space for sublease in Union Square right now?
No office space for sublease in Union Square is listed on Leasemark right now. Post what you need and Leasemark matches you the day a space that fits is listed; your contact details stay private until you accept an intro. Owners and brokers can list a space here for free.
How much does office space cost in Union Square?
Leasemark has no asking rents posted here yet, so here are the city's own numbers. Office buildings in Manhattan collected a median $52.08 per square foot in 2024, and the middle half between $38.22 and $74.58, according to the income and expense statements owners file with the NYC Department of Finance (FY 2027 distributions, 1,506 filings). The city publishes these figures by borough, so this is Manhattan as a whole, not Union Square alone. That is what buildings actually collected, with vacant space, concessions and leases signed years ago in the mix, so it is a baseline rather than a quote: a specific space's price depends on the building's class, floor, condition and the length of the lease.
How do I find office space in Union Square that is not publicly 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.
How is an office sublease in Union Square different from a direct lease?
You rent the space from the company that leases it now rather than from the landlord, for part of that company's remaining term. Subleases often come built out and furnished, run shorter than a direct lease and usually ask less than comparable direct space. The landlord has to consent in writing before anyone moves in, and the sublease ends when the lease above it does. Leasemark matches sublease listings with tenants looking to lease or sublease.
Can I sublease my office space in Union Square?
Usually, with your landlord's written consent: most New York office leases require it, and many let the landlord take the space back instead (recapture) or claim a share of any rent above what you pay. You stay liable under your own lease while the subtenant is in. Read the subletting clause first, then list the space for free on Leasemark, where it is matched against every active requirement for this kind of space.
How much office space is there in Union Square?
New York City's PLUTO tax lot data (26v2) records about 7.5 million square feet of office floor area across 132 properties in the part of Union Square Leasemark covers. The largest by that measure is 114 Fifth Avenue, at about 329,000 square feet. That is the existing building stock, not space currently for sublease.
What subway lines serve Union Square?
Eight subway stations sit within about 0.5 mi of Union Square's commercial core, served by the 1, 2, 3, 4, 5, 6, F, L, M, N, Q, R and W trains. The closest is 14 St-Union Sq (4 5 6 L N Q R W), roughly 1 minute on foot; then 14 St (1 2 3 F M L), 3 Av (L), 23 St-Baruch College (6), 23 St (R W), 8 St-NYU (R W), Astor Pl (6) and 1 more. Walking times are straight-line estimates from MTA station data.
Are offices being built out in Union Square?
In the 12 months to October 2026, the Department of Buildings issued first permits for 75 interior build-outs in 36 of the 53 office buildings Leasemark tracks in Union Square, with work permitted on 95 floors in all. Their filed cost estimates add up to about $42 million. The most were at 32 Union Square (6 build-outs). A build-out here is interior work on the same floors (construction, mechanical, plumbing, sprinklers and the like) first permitted within 120 days. New interior work usually follows a lease, so it is a rough sign of where tenants are moving in, but a permit does not say who the work is for.
Do tenants in Union Square pay the NYC Commercial Rent Tax?
Yes, for larger leases. Union Square is in Manhattan below 96th Street, where the city's Commercial Rent Tax applies. A tenant owes it only when base rent for the space is $250,000 a year or more. The tax is 6% of base rent after a 35% reduction, so 3.9% of rent, with a sliding credit between $250,000 and $300,000, and the Small Business Tax Credit wipes it out for businesses with total income of $5 million or less and base rent under $500,000.
Is it free to post on Leasemark?
Yes. Posting a space or a requirement is free. Contact details are only shared when both sides accept an intro.