| Building name | 100 William Street |
| Primary address | 100 William Street - 100 William Street |
| Secondary address | 72-78 John St |
| Neighborhood | Financial District |
| Zip code | 10038 |
| Borough | Manhattan |
| Block & lot | 00068-0036 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Purchase date | 12/12/2025 |
| Purchase price | $70,000,000 |
| Tax class | Register |
| Estimated property tax | $4,624,086 |
| Lot sq. ft. | 18,513 |
| Lot dimensions | |
| Property type | Office Only with or without Commercial - 20 Stories or More (O4)
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| Building sqft | 377,120 |
| Building dimensions |
| Buildings on lot | 1 |
| Stories | 22 |
| Year built | 1973 |
| Construction type | Register |
| School district | 2 |
| Community district | 1 |
| Closest police station | 0.72 Miles |
| Closest fire station | 0.12 Miles |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
New York property reports include comprehensive occupancy, development and violation information. Create a free account to access valuable data points such as:
You will find all alternate addresses for the property in this section.
This Office Only with or without Commercial - 20 Stories or More (O4) located at 100 William Street - 100 William Street, New York, NY 10038 has a total of 377,120 square feet and a current price per square foot of $185.
What is the year built & the current market value of 100 William Street - 100 William Street, New York, NY 10038?100 William Street - 100 William Street, New York, NY 10038 was built in 1973 and has a current tax assessor's market value of $101,738,000.
How many commercial spaces does this building have?This building has 76 commercial spaces available for lease.
View property contacts like owners, building management, representatives from permits and tenants with a free account. For LLC-owned properties, access manually researched real owners and phone numbers.
Create a free account to view the complete sales history for 100 William Street, New York, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.
*Here are the three most recent sales for this property.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for 100 William Street - 100 William Street - 100 William Street, New York, NY 10038. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Property tax: | $4,317,909 |
| Estimated property tax: | $4,624,086 |
| Tax assessor's market value: | $101,738,000 |
| Assessed value: | $45,782,100 |
Here's the assessment & property tax history for 100 William Street, New York, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessed value | Taxable | Tax rate % | Base tax | Property tax | Year over year change |
|---|---|---|---|---|---|---|---|
| 2025/26 | $101,738,000 | $45,782,100 | $39,803,729 | 10.848% | $4,317,909 | $4,317,909 | +6.62% |
| 2024/25 | $99,523,000 | $44,785,350 | $37,628,904 | 10.762% | $4,049,623 | $4,049,623 | +6.07% |
| 2023/24 | $85,174,000 | $38,328,300 | $36,044,400 | 10.592% | $3,817,823 | $3,817,823 | +2.44% |
| 2022/23 | $77,792,000 | $35,006,400 | $35,006,400 | 10.646% | $3,726,781 | $3,726,781 | +11.29% |
| 2021/22 | $69,194,000 | $31,137,300 | $31,137,300 | 10.755% | $3,348,817 | $3,348,817 | -14.93% |
The complete history of permits filed for 100 William Street, New York, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
Access a detailed real estate market overview of Manhattan so you can assess current trends, property values, types of properties sold and transaction volume. View the median price per sqft in Manhattan and compare it to other boroughs in New York City.
Check out recently sold homes in Manhattan and see how their prices compare.
| FEMA flood zone(s): | X (See more on map) |
| Hurricane evacuation zone: | 4 (See more on map) |
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Distance to Subway
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| Closest station | William St & John St at NE Corner | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Station lines | A-C-J-Z-2-3-4-5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 0.022 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Bus Routes
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| Name | Water St/John St | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line | M15 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 0.148 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Here are the neighbors for 100 William Street - 100 William Street - 100 William Street, New York, NY 10038.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 69 W 119th St, New York | 3,128 | 11/10/2025 | $1,493,225 |
| 55 E 110th St, New York | 37,570 | 12/30/2003 | |
| 261-274 W 94th St, New York | 38,800 | 08/11/2004 | $240,000 |
| 108 E 103rd St, New York | 7,656 | 12/19/2003 | $2 |
| 352 E 76th St, New York | 10,800 | 12/26/2003 | $5,350,000 |
| 1652 Park Ave, New York | 70,300 | 12/19/2003 | $7 |
| 292 Greenwich St, New York | 66,820 | 02/22/1972 | |
| 811 Riverside Dr, New York | 4,696 | 12/12/2003 | |
| 1908 Park Ave, New York | 21,183 | 07/30/2004 | $1,825,000 |
| 91 E 116th St, New York | 17,575 | 12/19/2003 | $7 |
| 38 Gramercy Park N, New York | 01/31/2025 | ||
| 179 Rivington St, New York | 6,400 | 12/23/2003 | $1,050,000 |
| 900 Riverside Dr, New York | 93,184 | 03/28/2012 | $10,018,000 |
| 185 Greenwich St, New York | 8,966,500 | 09/25/2019 | $2,168,237 |
| 727 6th Ave, New York | 5,752 | 07/12/2013 | $8,150,000 |
| 176 W 87th St, New York | 117,216 | 06/16/2014 | $999,999 |
| 345 W 58th St, New York | 588,527 | 08/09/2024 | $520,000 |
| 108 E 128th St, New York | 6,264 | 02/04/2019 | |
| 157 W 12th St, New York | 3,200 | 07/09/2020 | $19,500,000 |
| 104 Terrace View Ave, New York | 10,690 | 09/23/2019 | $2,750,000 |
