Office condominium · Flatiron, Manhattan
257 Park Avenue South
New York, NY 10010
257 Park Avenue South is a 20-floor office condominium in Flatiron, Manhattan, built in 1913, with about 190,000 square feet of office space according to city records.
Also at 100 East 21st Street and 257-265 Park Avenue South.
- Office space
- 190K SF
- Floors
- 20
- Year built
- 1913
- Zoning
- C6-4A
The 17th largest of the 90 office buildings we track in Flatiron. Compare it with 6 neighbors
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Compared with its neighbors
How 257 Park Avenue South compares
Next to the 6 nearest large office buildings, all within a 2 minute walk, 257 Park Avenue South is the largest by office floor area. It went up in 1913; the median neighbor dates from 1911. Its estimated property tax, about $18.83 a square foot of floor area before abatements, is close to the neighbors' median of $18.02.
| Building | Office space | Floors | Built | Tax / SF | Last sale |
|---|---|---|---|---|---|
| 257 Park Avenue South | 190K SF | 20 | 1913 | $18.83 | n/a |
| 251 Park Avenue South | 97K SF | 16 | 1910 | $26.86 | Jan 2014, $25M |
| 242 Park Avenue South | 103K SF | 12 | 1911 | $20.52 | n/a |
| 45 East 20th Street | 62K SF | 12 | 1911 | $11.67 | n/a |
| 235 Park Avenue South | 59K SF | 12 | 1921 | $19.23 | n/a |
| 287 Park Avenue South | 96K SF | 9 | 1893 | $16.81 | Aug 2014, $128M |
| 286 Park Avenue South | 148K SF | 14 | 1911 | $16.56 | n/a |
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); ACRIS for the last deed that moved the whole lot for a real price (a price for several lots is their combined price; condominiums sell by the unit and show n/a). 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
- 100 East 21st Street; 257-265 Park Avenue South
- ZIP code
- 10010
- Building type
- Office condominium (city class RB)
- Total floor area
- 189,547 SF
- Commercial floor area
- 189,547 SF
- Office
- 189,547 SF
- Height
- 20 floors
- Average floor
- About 9,500 SF (floor area divided by floors)
- Year built
- 1913
- Lot area
- 10,350 SF
- Zoning district
- C6-4A
- Built FAR
- 18.31
- Max commercial FAR
- 10
- Tax lot (BBL)
- 1008767504
Nearest subway
- 23 St-Baruch College
- 23 St
- 14 St-Union Sq
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-16; addresses from the Property Address Directory (PAD) 26b; subway stations from the MTA Subway Stations dataset, pulled 2026-10-16. 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 257 Park Avenue South for December 31, 2025, the newest annual filing the city has published, and none stood vacant that day.
- Storefronts registered for December 31, 2025
- 3
- Vacant that day
- 0
- Share vacant across Flatiron
- 11.8%
- Share vacant along Park Avenue South
- 23.4%
- Share vacant citywide
- 9.2%
- Condominium tax lots that filed
- 1
Vacant on December 31, by year
Need a storefront in Flatiron? Get matchedNYC storefront vacancy report
Source: NYC Department of Finance, Storefronts Reported Vacant or Not (Local Law 157), annual filings for 2019 to 2025, pulled 2026-10-16. 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, summed over the condominium's unit lot that filed, as the owners filed them. The 2025 filing was due June 1, 2026, 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
257 Park Avenue South is a condominium of 6 tax lots. 257 PARK AVENUE SOUTH FEE OWNER, LLC, one of 2 owners of record on the roll, owns the units that make up 83% of its market value. For tax year 2026/27 the city values 257 Park Avenue South at $83.6 million and assesses it at $37.6 million. After phase-ins and exemptions its taxable value is $32.9 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 $3.57 million a year before abatements, roughly $18.83 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.
- Largest unit owner
- 257 PARK AVENUE SOUTH FEE OWNER, LLC (83% of market value)
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $83,565,001
- Land market value
- $2,070,000
- Assessed value
- $37,604,251
- Taxable value (phased in)
- $36,937,924
- Exemptions
- $4,038,156
- Estimated yearly tax
- About $3.57 million
- Tax per SF of floor area
- About $18.83
- Condominium tax lots
- 6
- Owners of record
- 2
Manage or lease this building? Claim this page. Requests are reviewed by hand.
How to find who owns any NYC buildingSource: NYC Department of Finance, Property Valuation and Assessment Data (2026/27 roll, summed over 6 condominium tax lots; owner names as the roll records them, which cuts some long names short), pulled 2026-10-16; 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.
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Before you sign
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Questions about 257 Park Avenue South
How big is 257 Park Avenue South?
257 Park Avenue South has about 190,000 square feet of floor area in total, including 190,000 square feet of office, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.
When was 257 Park Avenue South built?
City records list 1913 as the year built. The building is 20 floors tall.
What other addresses does 257 Park Avenue South have?
City records list 100 East 21st Street and 257-265 Park Avenue South on the same tax lot (BBL 1008767504) as 257 Park Avenue South. A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 257 Park Avenue South?
257 Park Avenue South is in ZIP code 10010, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 257 Park Avenue South, New York, NY 10010, in Flatiron.
What is the zoning at 257 Park Avenue South?
The lot is in the C6-4A zoning district. PLUTO lists a built floor area ratio (FAR) of 18.31 and a maximum commercial FAR of 10 for this lot.
What subway station is closest to 257 Park Avenue South?
The closest subway station to 257 Park Avenue South is 23 St-Baruch College (the 6 train), about 500 feet away in a straight line, roughly 2 minutes on foot. The MTA lists it as an accessible station. Also nearby: 23 St (the R and W trains), 4 min walk; 14 St-Union Sq (the 4, 5, 6, L, N, Q, R and W trains), 5 min walk. Walking times are straight-line estimates; the street route is longer.
Who owns 257 Park Avenue South?
257 Park Avenue South is a condominium of 6 tax lots. 257 PARK AVENUE SOUTH FEE OWNER, LLC, one of 2 owners of record on the roll, owns the units that make up 83% of its market value. That is from the NYC Department of Finance's 2026/27 assessment roll (BBL 1008767504). Deeds and mortgages for each unit are public in ACRIS, the city's property records system.
What are the property taxes at 257 Park Avenue South?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $32.9 million for 257 Park Avenue South (the sum of its 6 condominium tax lots). At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $3.57 million a year, roughly $18.83 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1008767504 show the actual bill.
What is the assessed value of 257 Park Avenue South?
For tax year 2026/27, the NYC Department of Finance puts the market value of 257 Park Avenue South at $83.6 million ($2.07 million of it land) and its assessed value at $37.6 million, the 45% of market value the city assesses for Class 4 property.
Are there vacant storefronts at 257 Park Avenue South?
Owners registered 3 storefronts at 257 Park Avenue South for December 31, 2025, 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 257 Park Avenue South?
No space at 257 Park Avenue South 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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Flatiron
Transit hubs in Flatiron
- R W at 23 St
- 4 5 6 L N Q R W at 14 St-Union Sq
- F M at 23 St