Office building · Financial District, Manhattan
J. & W. Seligman & Company Building
1 William Street, New York, NY 10004
The J. & W. Seligman & Company Building (1 William Street) is a 12-floor office building in the Financial District, Manhattan, built in 1907, with about 105,000 square feet of office space according to city records.
Also at 1-3 South William Street, 63-67 Stone Street and 1-9 William Street.
- Office space
- 105K SF
- Floors
- 12
- Year built
- 1907
- Zoning
- C5-5
The 97th largest of the 106 office buildings we track in the Financial District. Compare it with 6 neighbors
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Compared with its neighbors
How the J. & W. Seligman & Company Building compares
Next to the 6 nearest large office buildings, all within a 1 minute walk, the J. & W. Seligman & Company Building ranks 6th of 7 by office floor area. It went up in 1907; the median neighbor dates from 1945. Its estimated property tax, about $9.06 a square foot of floor area before abatements, is below the neighbors' median of $9.89.
| Building | Office space | Floors | Built | Tax / SF | Last sale |
|---|---|---|---|---|---|
| J. & W. Seligman & Company Building, 1 William Street | 105K SF | 12 | 1907 | $9.06 | n/a |
| 44 Beaver Street | 98K SF | 12 | 1920 | Exempt | n/a |
| 5 Hanover Square | 244K SF | 24 | 1962 | $10.90 | n/a |
| 7 Hanover Square | 669K SF | 29 | 1983 | $9.38 | n/a |
| 55 Broad Street | 397K SF | 30 | 1968 | $8.77 | Jul 2023, $173M |
| 40 Exchange Place | 228K SF | 20 | 1902 | $10.09 | Nov 2015, $115M |
| 75 Broad Street | 647K SF | 34 | 1928 | $9.89 | 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
- Building name
- J. & W. Seligman & Company Building
- Other addresses
- 1-3 South William Street; 63-67 Stone Street; 1-9 William Street
- ZIP code
- 10004
- Building type
- Office building (city class O3)
- Total floor area
- 105,000 SF
- Commercial floor area
- 105,000 SF
- Office
- 105,000 SF
- Height
- 12 floors
- Average floor
- About 8,800 SF (floor area divided by floors)
- Year built
- 1907
- Last major alteration
- 1983
- Lot area
- 8,409 SF
- Zoning district
- C5-5
- Built FAR
- 12.49
- Max commercial FAR
- 15
- Landmark status
- Individual landmark
- Tax lot (BBL)
- 1000290036
Nearest subway
- Broad St
- Wall St
- Whitehall St-South Ferry
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-16; addresses from the Property Address Directory (PAD) 26b; building name from the NYC Landmarks Preservation Commission (below); 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 one storefront at the J. & W. Seligman & Company Building for December 31, 2025, the newest annual filing the city has published, and it was not vacant that day.
- Storefronts registered for December 31, 2025
- 1
- Vacant that day
- 0
- Share vacant across the Financial District
- 16.3%
- Share vacant citywide
- 9.2%
Vacant on December 31, by year
Need a storefront in the Financial District? 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, 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
The Department of Finance lists INTESA SANPAOLO S.P.A. as the owner of record. For tax year 2026/27 the city values the J. & W. Seligman & Company Building at $20.2 million and assesses it at $9.08 million. After phase-ins and exemptions its taxable value is $8.77 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 $951,736 a year before abatements, roughly $9.06 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
- INTESA SANPAOLO S.P.A.
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $20,176,000
- Land market value
- $7,360,000
- Assessed value
- $9,079,200
- Taxable value (phased in)
- $8,773,380
- Estimated yearly tax
- About $951,736
- Tax per SF of floor area
- About $9.06
City market value by tax year
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How to find who owns any NYC buildingSource: 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 2026-10-16; 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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NYC energy benchmarking (Local Law 84)
Energy use and emissions
The J. & W. Seligman & Company Building'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. Its site energy use came to 65.4 kBtu per square foot, 31% above the national median of 49.9 for a similar property. Its greenhouse gas emissions were about 768 metric tons of CO2e (6.83 kg per square foot).
- ENERGY STAR score (2024)
- None given
- Property type (Portfolio Manager)
- Financial Office
- Site energy use intensity
- 65.4 kBtu/SF
- National median for the type
- 49.9 kBtu/SF
- Greenhouse gas emissions
- 768 t CO2e
- Emissions per SF
- 6.83 kg CO2e
- Floor area in the filing
- 112,500 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 2026-10-16; 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 the J. & W. Seligman & Company Building in the 12 months to October 2026; the last one was first permitted in May 2025.
- New jobs, last 12 months
- 0
- Initial permits, last 12 months
- 0
- Newest job first permitted
- May 2025
- Interior build-outs, last 24 months
- 0
- Facade and sidewalk jobs, last 24 months
- 1
New jobs by year
Build-outs across the Financial DistrictWhere NYC offices are being built out
Source: NYC Department of Buildings, DOB NOW: Build Approved Permits, pulled 2026-10-24 (permits issued through 2026-10-22). 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
The J. & W. Seligman & Company Building was designed by Francis H. Kimball, Julian C. Levi and built in 1906-1907 in the neo-Renaissance style. The Landmarks Preservation Commission designated it a New York City landmark on February 13, 1996.
- Architect
- Francis H. Kimball, Julian C. Levi
- Constructed
- 1906-1907
- Style
- neo-Renaissance
- Primary material
- Steel frame
- Built as
- Bank and offices
- City landmark
- J. & W. Seligman & Company Building: individual landmark, designated February 13, 1996 (LP-01943)
Source: NYC Landmarks Preservation Commission, Individual Landmark Sites and Individual Landmark and Historic District Building Database on NYC Open Data, pulled 2026-10-16. A designation can cover part of a lot, such as a facade or a lobby interior.
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Questions about J. & W. Seligman & Company Building
How big is the J. & W. Seligman & Company Building?
The J. & W. Seligman & Company Building has about 105,000 square feet of floor area in total, including 105,000 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 the J. & W. Seligman & Company Building built?
The Landmarks Preservation Commission's building records date the J. & W. Seligman & Company Building to 1906-1907, designed by Francis H. Kimball, Julian C. Levi. The building is 12 floors tall.
Who designed the J. & W. Seligman & Company Building?
Francis H. Kimball, Julian C. Levi, according to the Landmarks Preservation Commission's building records, which list the style as neo-Renaissance and its original use as bank and offices.
Is the J. & W. Seligman & Company Building a New York City landmark?
Yes. The Landmarks Preservation Commission designated the J. & W. Seligman & Company Building an individual landmark on February 13, 1996 (LP-01943). Changes to a designated landmark, including many storefront, window and signage changes, need a permit from the Commission.
What is the address of the J. & W. Seligman & Company Building?
The J. & W. Seligman & Company Building is at 1 William Street in the Financial District, Manhattan. City records list 1-3 South William Street, 63-67 Stone Street and 1-9 William Street on the same tax lot (BBL 1000290036). A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 1 William Street?
1 William Street is in ZIP code 10004, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The J. & W. Seligman & Company Building is at 1 William Street, New York, NY 10004, in the Financial District.
What is the zoning at the J. & W. Seligman & Company Building?
The lot is in the C5-5 zoning district. PLUTO lists a built floor area ratio (FAR) of 12.49 and a maximum commercial FAR of 15 for this lot.
What subway station is closest to the J. & W. Seligman & Company Building?
The closest subway station to the J. & W. Seligman & Company Building is Broad St (the J and Z trains), about 700 feet away in a straight line, roughly 3 minutes on foot. Also nearby: Wall St (the 2 and 3 trains), 3 min walk; Whitehall St-South Ferry (the R, W and 1 trains, connected to South Ferry), 4 min walk. Walking times are straight-line estimates; the street route is longer.
Who owns the J. & W. Seligman & Company Building?
The NYC Department of Finance's 2026/27 assessment roll lists INTESA SANPAOLO S.P.A. as the owner of record of the J. & W. Seligman & Company Building (BBL 1000290036). Deeds and mortgages for the lot are public in ACRIS, the city's property records system.
Does the J. & W. Seligman & Company Building have an energy grade?
The J. & W. Seligman & Company Building'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. Its site energy use came to 65.4 kBtu per square foot, 31% above the national median of 49.9 for a similar property. Its greenhouse gas emissions were about 768 metric tons of CO2e (6.83 kg per square foot).
Is there construction at the J. & W. Seligman & Company Building?
The Department of Buildings issued no permits for new jobs at the J. & W. Seligman & Company Building in the 12 months to October 2026; the last one was first permitted in May 2025. These are the Department of Buildings' DOB NOW work permits for tax lot 1000290036. 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 the J. & W. Seligman & Company Building?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $8.77 million for the J. & W. Seligman & Company Building. At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $951,736 a year, roughly $9.06 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1000290036 show the actual bill.
What is the assessed value of the J. & W. Seligman & Company Building?
For tax year 2026/27, the NYC Department of Finance puts the market value of the J. & W. Seligman & Company Building at $20.2 million ($7.36 million of it land) and its assessed value at $9.08 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 17% from 2022/23 ($17.3 million) to 2026/27.
Are there vacant storefronts at the J. & W. Seligman & Company Building?
Owners registered one storefront at the J. & W. Seligman & Company Building for December 31, 2025, the newest annual filing the city has published, and it was not 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 the J. & W. Seligman & Company Building?
No space at 1 William 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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