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 · Flatiron, Manhattan
18 West 20th Street
New York, NY 10011
18 West 20th Street is an 11-floor office building with commercial space in Flatiron, Manhattan, built in 1902, with about 87,000 square feet of office space according to city records.
Also at 23 West 19th Street and 18-22 West 20th Street.
- Office space
- 87K SF
- Floors
- 11
- Year built
- 1902
- Zoning
- C6-4A
The 50th largest of the 75 office buildings we track in Flatiron. Compare it with 6 neighbors
No space at 18 West 20th Street 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.
Compared with its neighbors
How 18 West 20th Street compares
Next to the 6 nearest large office buildings, all within a 1 minute walk, 18 West 20th Street is the smallest by office floor area. It went up in 1902; the median neighbor dates from 1908. Its estimated property tax, about $11.20 a square foot of floor area before abatements, is below the neighbors' median of $12.09.
| Building | Office space | Floors | Built | Tax / SF |
|---|---|---|---|---|
| 18 West 20th Street | 87K SF | 11 | 1902 | $11.20 |
| Goodstein Building, 11 West 19th Street | 207K SF | 11 | 1904 | $20.30 |
| Brogan Building, 27 West 20th Street | 92K SF | 12 | 1908 | $10.48 |
| 39 West 19th Street | 98K SF | 12 | 1910 | $11.77 |
| Cluett Building, 23 West 18th Street | 166K SF | 11 | 1902 | $12.09 |
| 22 West 21st Street | 93K SF | 12 | 1908 | $12.10 |
| Crystal Building, 40 West 20th Street | 95K SF | 12 | 1910 | Exempt |
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 50,000 SF of the building's main use. Walking times are straight-line estimates.
NYC tax lot records
Building facts
- Other addresses
- 23 West 19th Street; 18-22 West 20th Street
- ZIP code
- 10011
- Building type
- Office building with commercial space (city class O6)
- Total floor area
- 93,722 SF
- Commercial floor area
- 93,722 SF
- Office
- 86,622 SF
- Retail
- 7,100 SF
- Height
- 11 floors
- Average floor
- About 8,500 SF (floor area divided by floors)
- Year built
- 1902
- Lot area
- 9,200 SF
- Zoning district
- C6-4A
- Built FAR
- 10.19
- Max commercial FAR
- 10
- Historic district
- Ladies' Mile Historic District
- Tax lot (BBL)
- 1008210055
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-09-30; addresses from the Property Address Directory (PAD) 26b; subway stations from the MTA Subway Stations dataset, pulled 2026-10-02. 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 18 West 20th Street 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 Flatiron
- 13.5%
- Share vacant along West 20th Street
- 14.7%
- Share vacant citywide
- 8.7%
Vacant on December 31, by year
Need a storefront in Flatiron? 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 2026-10-02. 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 DEZER PROPERTIES II LLC as the owner of record. For tax year 2026/27 the city values 18 West 20th Street at $22.7 million and assesses it at $10.2 million. After phase-ins and exemptions its taxable value is $9.68 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 $1.05 million a year before abatements, roughly $11.20 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
- DEZER PROPERTIES II LLC
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $22,682,000
- Land market value
- $4,000,000
- Assessed value
- $10,206,900
- Taxable value (phased in)
- $9,677,790
- Estimated yearly tax
- About $1.05 million
- Tax per SF of floor area
- About $11.20
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 2026-10-02; 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.
NYC energy benchmarking (Local Law 84)
Energy use and emissions
18 West 20th Street's 2024 Local Law 84 benchmarking filing got no ENERGY STAR score (the filing does not cover 12 full months of meter data), and Local Law 33 letter grades come from that score, so the filing does not yield an A to D grade.
- ENERGY STAR score (2024)
- None given
- Property type (Portfolio Manager)
- Office
- Floor area in the filing
- 105,490 SF
- ENERGY STAR certified
- 2015, 2016, 2017, 2018, 2019, 2020, 2022, 2024, 2025
ENERGY STAR score by year
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 2026-10-02; grade cutoffs from the Department of Buildings energy grades page. Figures are as the owner filed them in ENERGY STAR Portfolio Manager.
NYC Department of Buildings permits
Work permits and build-outs
The Department of Buildings issued no permits for new jobs at 18 West 20th Street in the 12 months to September 2026; the last one was first permitted in September 2024.
- New jobs, last 12 months
- 0
- Initial permits, last 12 months
- 0
- Newest job first permitted
- September 2024
- Interior build-outs, last 24 months
- 0
New jobs by year
Build-outs across FlatironWhere NYC offices are being built out
Source: NYC Department of Buildings, DOB NOW: Build Approved Permits, pulled 2026-10-02 (permits issued through 2026-09-30). 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.
Landmarks Preservation Commission records
Architecture and history
18 West 20th Street was designed by De Lemos & Cordes and built in 1901-1902 in the Beaux-Arts style. It stands in the Ladies' Mile Historic District, so exterior changes and new signage go through the Landmarks Preservation Commission.
- Architect
- De Lemos & Cordes
- Constructed
- 1901-1902
- Style
- Beaux-Arts
- Primary material
- Stone
- Built as
- Store and lofts
Source: NYC Landmarks Preservation Commission, Individual Landmark and Historic District Building Database on NYC Open Data, pulled 2026-10-02. A designation can cover part of a lot, such as a facade or a lobby interior.
Office space nearby in Flatiron
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 Flatiron yet. These labeled examples show what tenants post. List a space in 18 West 20th Street and we match it against every new one automatically.
Want · Office
Startup seeking furnished sublease
Posted by the tenant · Software
- Where
- Flatiron, Midtown South +1
- Size
- 6,000 to 11,000 SF
- Budget
- to $60/SF
- Move in
- Nov 2026
Furnished
Owners: got a fit?I have a fit
Before you sign
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Questions about 18 West 20th Street
How big is 18 West 20th Street?
18 West 20th Street has about 94,000 square feet of floor area in total, including 87,000 square feet of office and 7,000 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 18 West 20th Street built?
The Landmarks Preservation Commission's building records date 18 West 20th Street to 1901-1902, designed by De Lemos & Cordes. The building is 11 floors tall.
Who designed 18 West 20th Street?
De Lemos & Cordes, according to the Landmarks Preservation Commission's building records, which list the style as Beaux-Arts and its original use as store and lofts.
What other addresses does 18 West 20th Street have?
City records list 23 West 19th Street and 18-22 West 20th Street on the same tax lot (BBL 1008210055) as 18 West 20th Street. A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 18 West 20th Street?
18 West 20th Street is in ZIP code 10011, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The full mailing address is 18 West 20th Street, New York, NY 10011, in Flatiron.
What is the zoning at 18 West 20th Street?
The lot is in the C6-4A zoning district. PLUTO lists a built floor area ratio (FAR) of 10.19 and a maximum commercial FAR of 10 for this lot. It is inside the Ladies' Mile Historic District, so exterior changes go through the Landmarks Preservation Commission.
What subway station is closest to 18 West 20th Street?
The closest subway station to 18 West 20th Street is 23 St (the R and W trains), about 1000 feet away in a straight line, roughly 4 minutes on foot. Also nearby: 23 St (the F and M trains), 4 min walk; 14 St (the 1, 2, 3, F, M and L trains, connected to 6 Av), 5 min walk. Walking times are straight-line estimates; the street route is longer.
Who owns 18 West 20th Street?
The NYC Department of Finance's 2026/27 assessment roll lists DEZER PROPERTIES II LLC as the owner of record of 18 West 20th Street (BBL 1008210055). Big buildings are usually held through a company set up for that one property, so the name on the roll can differ from the landlord's brand or the managing agent. Deeds and mortgages for the lot are public in ACRIS, the city's property records system.
Does 18 West 20th Street have an energy grade?
18 West 20th Street's 2024 Local Law 84 benchmarking filing got no ENERGY STAR score (the filing does not cover 12 full months of meter data), and Local Law 33 letter grades come from that score, so the filing does not yield an A to D grade.
Is there construction at 18 West 20th Street?
The Department of Buildings issued no permits for new jobs at 18 West 20th Street in the 12 months to September 2026; the last one was first permitted in September 2024. These are the Department of Buildings' DOB NOW work permits for tax lot 1008210055. 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 18 West 20th Street?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $9.68 million for 18 West 20th Street. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $1.05 million a year, roughly $11.20 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1008210055 show the actual bill.
What is the assessed value of 18 West 20th Street?
For tax year 2026/27, the NYC Department of Finance puts the market value of 18 West 20th Street at $22.7 million ($4 million of it land) and its assessed value at $10.2 million, the 45% of market value the city assesses for Class 4 property. The city's market value fell 13% from 2022/23 ($25.9 million) to 2026/27.
Are there vacant storefronts at 18 West 20th Street?
Owners registered 3 storefronts at 18 West 20th Street 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 18 West 20th Street?
No space at 18 West 20th Street 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