| Primary address | 644 Union Street |
| Neighborhood | Park Slope |
| Zip code | 11215 |
| Borough | Brooklyn |
| Block & lot | 00955-0020 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Tax class | Register |
| Estimated property tax | $4,063 |
| Lot sqft | 1,520 |
| Lot dimensions | |
| Building class | Miscellaneous One Family (A9) |
| Building sqft | 1,920 |
| Building dimensions | |
| Buildings on lot | 1 |
| Stories | 3 |
| Structure type | Old style |
| Building material | Stone |
| Exterior wall | Brick/masonry |
| Basement type | Full |
| Year built | 1899 |
| Frontage(s) | Union Street (wide) |
| School district | 13 |
| Community district | 6 |
| Closest police station | 0.49 Miles |
| Closest fire station | 0.32 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:
644 Union Street, Brooklyn, NY 11215 was built in 1899 and has a total of 1,920 square feet.
What is the assessed value of 644 Union Street, Brooklyn, NY 11215 and the property tax paid?Assessed at $156,420, the tax amount paid for 644 Union Street, Brooklyn, NY 11215 is $4,063. For the next year, the tax amount for 644 Union Street, Brooklyn, NY 11215 is estimated at $4,063.
When was 644 Union Street, Brooklyn, NY 11215 last sold?644 Union Street, Brooklyn, NY 11215 was last sold in 10/25/1991.
How many residential units does this building have?This building has 1 residential unit(s).
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 644 Union Street, Brooklyn, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.
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 644 Union Street, Brooklyn, NY 11215. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Property tax: | $4,063 |
| Estimated property tax: | $4,063 |
| Tax assessor's market value: | $2,607,000 |
| Assessed value: | $156,420 |
| Exemptions granted by city: | Register |
Here's the assessment & property tax history for 644 Union Street, Brooklyn, 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 | $2,607,000 | $156,420 | $20,476 | 19.843% | $4,345 | $4,063 | -0.78% |
| 2024/25 | $2,766,000 | $165,960 | $20,388 | 20.085% | $4,364 | $4,095 | +6.74% |
| 2023/24 | $2,973,000 | $178,380 | $19,100 | 20.085% | $4,117 | $3,836 | +5.65% |
| 2022/23 | $2,519,000 | $151,140 | $17,880 | 20.309% | $3,928 | $3,631 | +8.23% |
| 2021/22 | $2,436,000 | $146,160 | $16,807 | 19.963% | $3,643 | $3,355 | -5.32% |
The complete history of permits filed for 644 Union Street, Brooklyn, 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 Park Slope so you can assess current trends, home values, types of properties sold and transaction volume.
View the median home sale price in Park Slope and compare it to other neighborhoods in Brooklyn.
Check out recently sold homes in Brooklyn and see how their prices compare.
| FEMA flood zone(s): | X (See more on map) |
| Hurricane evacuation zone: | 5 (See more on map) |
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Distance to Subway
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| Closest station | 4th Ave & Union St at SE Corner | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Station lines | R | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 0.05 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Bus Routes
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| Name | 4 Av/Union St | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line | B37 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 0.058 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Name | Rating | Att. zoned | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|---|
| P.S. 282 Park Slope | 5 | Yes | Public | PK, K-5 | 496 | 0.23 |
| P.S. 282 Park Slope | 5 | Yes | Public | PK, K-5 | 496 | 0.23 |
| P.S. 372 The Children S School | NR | No | Public | PK, K-8 | 436 | 0.17 |
| P.S. 372 The Children S School | NR | No | Public | PK, K-8 | 436 | 0.17 |
| Rivendell School | NR | No | Private | PK-K | 103 | 0.19 |
| Name | Rating | Att. zoned | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|---|
| P.S. 372 The Children S School | NR | No | Public | PK, K-8 | 436 | 0.17 |
| Berkeley Carroll Elementary School | NR | No | Private | PK-12 | 940 | 0.30 |
| Park Slope Christian Academy | NR | No | Private | PK, K-8 | 37 | 0.30 |
| St Francis Xavier School | NR | No | Private | PK-8 | 175 | 0.32 |
| Ms 266 Park Place Community Middle School | 4 | No | Public | 6-8 | 69 | 0.33 |
| Name | Rating | Att. zoned | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|---|
| Berkeley Carroll Elementary School | NR | No | Private | PK-12 | 940 | 0.30 |
| P.S. 77 | NR | No | Public | K-12 | 304 | 0.33 |
| Al-Madinah School | NR | No | Private | PK-12 | 790 | 0.37 |
| Berkeley Carroll School | NR | No | Private | PK-12 | 977 | 0.44 |
| Brooklyn High School of the Arts | 5 | No | Public | 9-12 | 927 | 0.49 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 644 Union Street, Brooklyn, NY 11215.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 646 Union St, Brooklyn | 1,980 | 07/09/2004 | |
| 652 Union St, Brooklyn | 2,560 | 06/16/2005 | $1,200,000 |
| 662 Union St, Brooklyn | 1,980 | 12/21/1994 | |
| 642 Union St, Brooklyn | 1,980 | 11/05/1998 | |
| 638 Union St, Brooklyn | 1,968 | 04/29/2025 | |
| 215 4th Ave, Brooklyn | 945 | 04/19/2018 | $1,450,000 |
| 845 Union St, Brooklyn | 28,350 | ||
| 650 Union St, Brooklyn | 1,970 | 11/04/2024 | |
| 656 Union St, Brooklyn | 2,172 | 02/17/2009 | $850,000 |
| 666 Union St, Brooklyn | 1,672 | 11/28/2006 | $1,000,000 |
| 805 Union St, Brooklyn | 6,079 | 11/15/2012 | |
| 660 Union St, Brooklyn | 1,980 | 04/15/2021 | |
| 799 Union St, Brooklyn | 4,960 | 06/23/1982 | |
| 648 Union St, Brooklyn | 2,176 | 07/12/2004 | $991,000 |
| 654 Union St, Brooklyn | 1,980 | 08/18/1977 | |
| 801 Union St, Brooklyn | 4,860 | 10/18/1984 | |
| 640 Union St, Brooklyn | 06/19/1975 | ||
| 227 4th Ave, Brooklyn | 12,200 | 11/16/2018 | |
| 803 Union St, Brooklyn | 4,860 | 12/17/2015 | |
| 664 Union St, Brooklyn | 1,950 | 04/30/2002 |
