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871 Union Street, Brooklyn, NY 11215 Property Information

871 Union Street, Brooklyn, NY 11215 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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871 Union Street, Brooklyn, NY 11215 1
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Address

Primary address 871 Union Street
Neighborhood Park Slope
Zip code 11215
Borough Brooklyn
Block & lot 01063-0068

Sales & Tax Overview for 871 Union Street, Brooklyn

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Tax class
Estimated property tax $16,577

Lot & Building Information for 871 Union Street, Brooklyn

Lot sqft 1,995
Lot dimensions 21 ft x 95 ft
Building class Two Family Converted from One Family (B3)
Building sqft 4,486
Building dimensions 21 ft x 48 ft
Buildings on lot 1
Stories 3
Structure type Brownstone
Building material Brick
Exterior wall Brick/masonry
Basement type Full
Year built 1899
Year last altered 2015
Frontage(s) Union Street (wide)
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Zoning & Use for 871 Union Street, Brooklyn

Zoning
Residential units (DOF) 2
Residential sqft

Area Overview

Walk Score
Transit Score
Bike Score


School district 13
Community district 6
Closest police station 0.43 Miles
Closest fire station 0.10 Miles

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 871 Union Street, Brooklyn

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Floor area ratio (FAR) for 871 Union Street, Brooklyn, NY 11215, including commercial and residential FAR, FAR as built and usable floor area.
Development maps such as planimetric, zoning, urban landscape, and HPD alternative enforcement program maps.
Violations for 871 Union Street, Brooklyn, NY 11215, including DOB violations, ECB violations, HPD violations and 311 complaints.

About 871 Union Street, Brooklyn

What is the year built & the total sq. ft. for 871 Union Street, Brooklyn, NY 11215?

871 Union Street, Brooklyn, NY 11215 was built in 1899 and has a total of 4,486 square feet.

What is the assessed value of 871 Union Street, Brooklyn, NY 11215 and the property tax paid?

Assessed at $319,380, the tax amount paid for 871 Union Street, Brooklyn, NY 11215 is $15,810. For the next year, the tax amount for 871 Union Street, Brooklyn, NY 11215 is estimated at $16,577.

When was 871 Union Street, Brooklyn, NY 11215 last sold?

871 Union Street, Brooklyn, NY 11215 was last sold in 12/08/1980.

How many residential units does this building have?

This building has 2 residential unit(s).

Ownership Information for 871 Union Street, Brooklyn

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Property owner name for 871 Union Street, Brooklyn, NY 11215
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Building contacts for 871 Union Street, Brooklyn, NY 11215
Building management:
Representatives (from permits):
Tenants:
Real Estate Reports:
Eliza Theiss, Apr 23, 2026 $4.6M Hudson Yards Maintains Top Spot, Luxury Sales in Malba Set $2.5M Price Record for Queens
Despite prices declining, Hudson Yards remained the most expensive NYC neighborhood, but TriBeCa’s growth closed the gap to under $400,000, while Malba set a new historic price record for Queens at $2.5 million, securing the highest ranking ever for the borough at #5.
Eliza Theiss, Mar 19, 2026 Cheaper in the City? Nearly 100 Communities in Suburban NYC Surpass $1M
New Yorkers planning a move to the suburbs increasingly find their options limited, after suburban home values shot up twice as fast as NYC medians over the last decade. While larger homes and better prices were long the norm outside the five boroughs, today, many NYC buyers find their option restricted to a handful of suburban markets.
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Past Sales & Property History for 871 Union Street, Brooklyn

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No recorded sales for this property.

Title Documents for 871 Union Street, Brooklyn

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.

Date Type Amount Party 1 Party 2 Doc image
11/19/2014 - D
12/12/2014 - R
Zoning Lot Description
(2014112600226002)
11/18/2014 - D
12/12/2014 - R
Certificate
(2014112600226001)
12/08/1980 - D
12/08/1980 - R
Deed
(38030120201340)
05/19/1977 - R Mortgage
(37730092001741)
05/19/1977 - R Deed
(37730092001739)
03/21/1968 - R Mortgage
(36830067900003)
03/21/1968 - R Deed
(36830067900001)
03/21/1968 - R Deed
(36830067800498)
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R: Recorded date
D: Document date

Property Taxes for 871 Union Street, Brooklyn

Access detailed property tax data for 871 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: $15,810
Estimated property tax: $16,577
Tax assessor's market value: $5,323,000
Assessed value: $319,380

Assessment History for 871 Union Street, Brooklyn

Here's the assessment & property tax history for 871 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 $5,323,000 $319,380 $79,676 19.843% $15,810 $15,810 +2.67%
2024/25 $5,089,000 $305,340 $76,666 20.085% $15,398 $15,398 +1.12%
2023/24 $5,186,000 $311,160 $75,814 20.085% $15,227 $15,227 +3.94%
2022/23 $5,682,000 $340,920 $72,137 20.309% $14,650 $14,650 +5.41%
2021/22 $4,718,000 $283,080 $69,621 19.963% $13,898 $13,898 -0.54%

Permits for 871 Union Street, Brooklyn

The complete history of permits filed for 871 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.

Filing date Job type Job status Job description Initial cost
11/06/2014 Alteration type 1
         
         
         
         
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Park Slope Residential Market Stats

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.

Median Sale Price
$1,488,000
2.9% YoY
Median Price/Sqft
$1,318
-4% YoY
Brooklyn Median Sale Price
$885,000
2.5% YoY

Check out recently sold homes in Brooklyn and see how their prices compare.

Risk

FEMA flood zone(s): X (See more on map)

Transportation

Distance to Subway
Closest station Flatbush Ave & Plaza Street West at NW Corner
Station lines 2-3
Distance (miles) 0.186
View subway map
Bus Routes
Name 7 Av/Union St
Line B67
Distance (miles) 0.04

Schools

Nearest elementary schools

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 0.22
P.S. 282 Park Slope 5 Yes Public PK, K-5 496 0.22
Berkeley Carroll School NR No Private PK-12 977 0.09
Berkeley Carroll School NR No Private PK-12 977 0.09
St Francis Xavier School NR No Private PK-8 175 0.12

Nearest middle schools

Name Rating Att. zoned Type Grade range No of students Distance to school (mi)
Berkeley Carroll School NR No Private PK-12 977 0.09
St Francis Xavier School NR No Private PK-8 175 0.12
Berkeley Carroll Elementary School NR No Private PK-12 940 0.17
Is 340 7 No Public 6-8 150 0.28
P.S. 77 NR No Public K-12 304 0.31

Nearest high schools

Name Rating Att. zoned Type Grade range No of students Distance to school (mi)
Berkeley Carroll School NR No Private PK-12 977 0.09
Berkeley Carroll Elementary School NR No Private PK-12 940 0.17
P.S. 77 NR No Public K-12 304 0.31
Poly Prep Lower School NR No Private 0 0.36
Cyberarts Studio Academy 2 No Public 9-12 298 0.41

Data provided by GreatSchools.org © 2025. All rights reserved.

Neighbors for 871 Union Street, Brooklyn

Here are the neighbors for 871 Union Street, Brooklyn, NY 11215.

Address Square feet Purchase date Purchase price
63 8th Ave, Brooklyn 6,825 12/28/2004
889 Union St, Brooklyn 3,558 03/29/1984
865 Union St, Brooklyn 4,024 01/24/2020 $3,700,000
873 Union St, Brooklyn 4,030 10/10/1997
869 Union St, Brooklyn 4,030 04/27/2020
61 8th Ave, Brooklyn 4,377 07/29/1998
875 Union St, Brooklyn 4,032 12/31/1985
877 Union St, Brooklyn 4,032 12/11/2024 $4,600,000
879 Union St, Brooklyn 4,030 03/16/2005
885 Union St, Brooklyn 4,030 11/27/2012
867 Union St, Brooklyn 4,024 02/12/2018
71 8th Ave, Brooklyn 7,063 12/13/1979
69 8th Ave, Brooklyn 6,719 10/02/2014 $2,800,000
881 Union St, Brooklyn 4,032 02/11/1986
887 Union St, Brooklyn 4,160 10/04/2002
891 Union St, Brooklyn 3,440 04/15/2024
70 8th Ave, Brooklyn 9,915
204 Berkeley Pl, Brooklyn 3,818
65 8th Ave, Brooklyn 6,183 01/31/2007
883 Union St, Brooklyn 3,969 05/21/1999
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