Want · Office
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
- Jan 2027
Near subwayHigh ceilings
Owners: got a fit?I have a fit
Office building with commercial space · Union Square, Manhattan
29 Union Square
New York, NY 10003
29 Union Square is a 5-floor office building with commercial space in Union Square, Manhattan, built in 1959, with about 37,000 square feet of office space according to city records.
Also at 28-34 East 16th Street, 27-29 Union Square and 27-29 Union Square West.
- Office space
- 37K SF
- Floors
- 5
- Year built
- 1959
- Zoning
- C6-4
The 50th largest of the 53 office buildings we track in Union Square. Compare it with 6 neighbors
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Compared with its neighbors
How 29 Union Square compares
Next to the 6 nearest large office buildings, all within a 1 minute walk, 29 Union Square is the smallest by office floor area. Built in 1959, it is the newest of them. Its estimated property tax, about $23.44 a square foot of floor area before abatements, is above the neighbors' median of $17.66.
| Building | Office space | Floors | Built | Tax / SF |
|---|---|---|---|---|
| 29 Union Square | 37K SF | 5 | 1959 | $23.44 |
| 17 Union Square | 82K SF | 12 | 1912 | $21.08 |
| 18 East 16th Street | 38K SF | 7 | 1907 | $12.96 |
| 41 Union Square | 66K SF | 16 | 1920 | $28.18 |
| Geraldine Building, 5 East 16th Street | 37K SF | 12 | 1892 | $14.23 |
| 5 Union Square | 74K SF | 8 | 1900 | $10.78 |
| Knickerbocker Building, 79 Fifth Avenue | 256K SF | 16 | 1906 | $26.27 |
Sources: NYC Department of City Planning, PLUTO 26v2 for size, floors and year built; NYC Department of Finance 2026/27 roll for tax (taxable value times the class rate, before abatements, over the whole floor area). Large means at least 35,000 SF of the building's main use. Walking times are straight-line estimates.
NYC tax lot records
Building facts
- Other addresses
- 28-34 East 16th Street; 27-29 Union Square; 27-29 Union Square West
- ZIP code
- 10003
- Building type
- Office building with commercial space (city class O5)
- Total floor area
- 46,095 SF
- Commercial floor area
- 46,095 SF
- Office
- 37,095 SF
- Retail
- 9,000 SF
- Height
- 5 floors
- Average floor
- About 9,200 SF (floor area divided by floors)
- Year built
- 1959
- Lot area
- 9,219 SF
- Zoning district
- C6-4
- Built FAR
- 5
- Max commercial FAR
- 10
- Tax lot (BBL)
- 1008430029
Nearest subway
- 14 St-Union Sq
- 14 St
- 23 St-Baruch College
Nearby large buildings
- Annin Building, 85 Fifth Avenue
- Lincoln Building, 1 Union Square West
- 87 Fifth Avenue
- Parish Building, 860 Broadway
- Van Beuren Building, 71 Fifth Avenue
- Century Building, 33 East 17th Street
- 101 Fifth Avenue
- Everett Building, 200 Park Avenue South
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-05; addresses from the Property Address Directory (PAD) 26b; subway stations from the MTA Subway Stations dataset, pulled 2026-10-05. Floor areas are the city's estimates for the whole building, not available space. Walking times are straight-line estimates. How we build these pages. Something wrong on this page? Tell us.
NYC storefront registry (Local Law 157)
Storefronts and vacancy
Owners registered 3 storefronts at 29 Union Square for December 31, 2024, the newest annual filing the city has published, and none stood vacant that day.
- Storefronts registered for December 31, 2024
- 3
- Vacant that day
- 0
- Share vacant across Union Square
- 10.6%
- Share vacant citywide
- 8.7%
Vacant on December 31, by year
Need a storefront in Union Square? Get matchedStorefront vacancy across New York City
Source: NYC Department of Finance, Storefronts Reported Vacant or Not (Local Law 157), annual filings for 2019 to 2024, pulled 2026-10-08. Owners of buildings with ground- or second-floor storefronts register each one every year with its status on December 31; counts are by tax lot, as the owners filed them. The 2024 filing was due June 3, 2025, so a storefront vacant then may have been leased since. A vacant storefront is not always on the market, and none here is listed on Leasemark unless it shows above.
NYC Department of Finance records
Owner, property tax and assessed value
The Department of Finance lists UNION SQUARE BROADWAY ASSOC as the owner of record. For tax year 2026/27 the city values 29 Union Square at $23.9 million and assesses it at $10.7 million. After phase-ins and exemptions its taxable value is $9.96 million; at the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists) that comes to about $1.08 million a year before abatements, roughly $23.44 per square foot of floor area. Commercial leases here often pass a tenant's share of tax increases over a base year through as additional rent.
- Owner of record
- UNION SQUARE BROADWAY ASSOC
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $23,857,000
- Land market value
- $3,830,000
- Assessed value
- $10,735,650
- Taxable value (phased in)
- $9,958,320
- Estimated yearly tax
- About $1.08 million
- Tax per SF of floor area
- About $23.44
City market value by tax year
Source: NYC Department of Finance, Property Valuation and Assessment Data (2026/27 roll; owner names as the roll records them, which cuts some long names short), pulled 2026-10-08; tax rate from the Department of Finance tax rates page, checked 2026-09-28. The estimate is the taxable value times the class rate. It leaves out abatements, payment-in-lieu-of-taxes agreements and charges, so the actual bill can differ.
Own or manage 29 Union Square? List a space here free and we match it against every active requirement.
NYC energy benchmarking (Local Law 84)
Energy score, grade and emissions
29 Union Square reported an ENERGY STAR score of 65 out of 100 for 2024 in its Local Law 84 benchmarking filing. Under Local Law 33 that score earns a C (55 to 69). Its site energy use came to 85.9 kBtu per square foot, 20% below the national median of 106.8 for a similar property. Its greenhouse gas emissions were about 459 metric tons of CO2e (8.69 kg per square foot).
- ENERGY STAR score (2024)
- 65 of 100
- Grade this score earns (Local Law 33)
- C (55 to 69)
- Property type (Portfolio Manager)
- Office
- Site energy use intensity
- 85.9 kBtu/SF
- National median for the type
- 106.8 kBtu/SF
- Greenhouse gas emissions
- 459 t CO2e
- Emissions per SF
- 8.69 kg CO2e
- Floor area in the filing
- 52,850 SF
ENERGY STAR score by year
Energy sources in 2024
Source: NYC Department of Buildings and Mayor's Office of Climate and Environmental Justice, NYC Building Energy and Water Data Disclosure for Local Law 84 (2024 filing), pulled 2026-10-08; grade cutoffs from the Department of Buildings energy grades page. Figures are as the owner filed them in ENERGY STAR Portfolio Manager. The grade is the one the filed score earns under the law's cutoffs; the Department of Buildings assigns the grade a building posts, which can differ.
Local Law 97 of 2019, estimated
Local Law 97 emissions limit
At its 2024 energy use, 29 Union Square comes to about 361 metric tons of CO2e a year under Local Law 97's coefficients, against a limit of 464 tons for 2024 to 2029 (78% of the limit), so it would owe no penalty. From 2030 the limit drops to 172 tons and the same energy use counts as about 225 tons, about 53 tons over, or an estimated $14,000 a year unless the building cuts its emissions.
- Period
- 2024 to 2029
- Emissions limit
- 464 t CO2e
- Estimated emissions
- 361 t CO2e
- Under the limit by
- 102 t CO2e
- Estimated penalty a year
- None
- Period
- 2030 to 2034
- Emissions limit
- 172 t CO2e
- Estimated emissions
- 225 t CO2e
- Over the limit by
- 53 t CO2e
- Estimated penalty a year
- $14,000
Estimated from the owner's 2024 Local Law 84 filing, which reports energy by source and floor area by use: Restaurant 12,150 SF; Office 27,436 SF; Financial Office 13,264 SF. It applies the coefficients and per-use limits in Department of Buildings rule 1 RCNY 103-14 and Administrative Code 28-320.3.1.1 (as the Department lists them) and the $268 per ton penalty, checked 2026-10-04. It is not the building's Local Law 97 report: that report can count renewable energy credits, solar and storage deductions and, for 2024 and 2025, the law's occupancy group limits where higher, and penalties can be reduced for good faith efforts.
Change these numbers in the Local Law 97 calculator to see what a cut in energy use would do to the penalty.
Own or manage 29 Union Square? List a space here free and we match it against every active requirement.
NYC Department of Buildings permits
Work permits and build-outs
In the 12 months to October 2026, the Department of Buildings issued first permits for 3 jobs at 29 Union Square. In the last two years, interior work was permitted on one floor (floor 1). The newest build-out, on floor 1, was first permitted in April 2026 (construction; filed cost estimate $156,000).
- New jobs, last 12 months
- 3
- Initial permits, last 12 months
- 3
- Newest job first permitted
- June 2026
- Interior build-outs, last 24 months
- 1
- Floors with interior work, last 24 months
- 1
Recent build-outs
New jobs by year
Build-outs across Union SquareWhere NYC offices are being built out
Source: NYC Department of Buildings, DOB NOW: Build Approved Permits, pulled 2026-10-08 (permits issued through 2026-10-06). A job counts once, when its first permit is issued; renewals are not new work. A build-out groups jobs on the same floors first permitted within 120 days of each other. Costs are the estimates filed with the jobs. Jobs filed before DOB NOW (in the older BIS system) are not counted. A permit is approval to do the work; it does not say who the work is for or whether it is finished.
Office space nearby in Union Square
Nothing is listed nearby yet. The labeled examples below show how a space appears; they are not on the market.
What a requirement here looks like
No live requirements for office space in Union Square yet. These labeled examples show what tenants post. List a space in 29 Union Square and we match it against every new one automatically.
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Questions about 29 Union Square
How big is 29 Union Square?
29 Union Square has about 46,000 square feet of floor area in total, including 37,000 square feet of office and 9,000 square feet of retail, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.
When was 29 Union Square built?
City records list 1959 as the year built. The building is 5 floors tall.
What other addresses does 29 Union Square have?
City records list 28-34 East 16th Street, 27-29 Union Square and 27-29 Union Square West on the same tax lot (BBL 1008430029) as 29 Union Square. A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 29 Union Square?
29 Union Square is in ZIP code 10003, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 29 Union Square, New York, NY 10003, in Union Square.
What is the zoning at 29 Union Square?
The lot is in the C6-4 zoning district. PLUTO lists a built floor area ratio (FAR) of 5 and a maximum commercial FAR of 10 for this lot.
What subway station is closest to 29 Union Square?
The closest subway station to 29 Union Square is 14 St-Union Sq (the 4, 5, 6, L, N, Q, R and W trains), about 350 feet away in a straight line, roughly 1 minute on foot. The MTA lists it as an accessible station. Also nearby: 14 St (the 1, 2, 3, F, M and L trains, connected to 6 Av), 6 min walk; 23 St-Baruch College (the 6 train), 7 min walk. Walking times are straight-line estimates; the street route is longer.
Who owns 29 Union Square?
The NYC Department of Finance's 2026/27 assessment roll lists UNION SQUARE BROADWAY ASSOC as the owner of record of 29 Union Square (BBL 1008430029). Deeds and mortgages for the lot are public in ACRIS, the city's property records system.
What is the energy grade of 29 Union Square?
29 Union Square reported an ENERGY STAR score of 65 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 65 earns a C. 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 85.9 kBtu per square foot, 20% below the national median of 106.8 for a similar property. Its greenhouse gas emissions were about 459 metric tons of CO2e (8.69 kg per square foot).
Does 29 Union Square meet Local Law 97?
At its 2024 energy use, 29 Union Square comes to about 361 metric tons of CO2e a year under Local Law 97's coefficients, against a limit of 464 tons for 2024 to 2029 (78% of the limit), so it would owe no penalty. From 2030 the limit drops to 172 tons and the same energy use counts as about 225 tons, about 53 tons over, or an estimated $14,000 a year unless the building cuts its emissions. This is an estimate from the owner's 2024 benchmarking filing using the coefficients and per-use limits in the law and the Department of Buildings rule, at $268 per ton over. It is not the building's Local Law 97 report, which can count credits and deductions this estimate cannot.
Is there construction at 29 Union Square?
In the 12 months to October 2026, the Department of Buildings issued first permits for 3 jobs at 29 Union Square. In the last two years, interior work was permitted on one floor (floor 1). The newest build-out, on floor 1, was first permitted in April 2026 (construction; filed cost estimate $156,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1008430029. A permit is approval to do the work; it does not say who the work is for or whether it is finished.
What are the property taxes at 29 Union Square?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $9.96 million for 29 Union Square. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $1.08 million a year, roughly $23.44 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1008430029 show the actual bill.
What is the assessed value of 29 Union Square?
For tax year 2026/27, the NYC Department of Finance puts the market value of 29 Union Square at $23.9 million ($3.83 million of it land) and its assessed value at $10.7 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 21% from 2022/23 ($19.7 million) to 2026/27.
Are there vacant storefronts at 29 Union Square?
Owners registered 3 storefronts at 29 Union Square 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.
Is there office space for lease at 29 Union Square?
No space at 29 Union Square 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.
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Union Square
Transit hubs in Union Square
- 4 5 6 L N Q R W at 14 St-Union Sq