New York City  »  11215  »  Union St  »  820 Union St

820 Union Street, Brooklyn, NY 11215 - Property report

Also known as: 820 Union St

Property image for 820 Union Street, Brooklyn, NY 11215
static Mapbox map

Property type

Two Family Converted from One Family (B3)

Year built

1899

Lot sq. ft.

1,995

Sale price

$4,950,000

General information

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Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
820 Union Street
ZIP code
11215
Neighborhood
Park Slope
Borough
Brooklyn
Block & lot
01065-0006

Owner

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Building
Property type
Two Family Converted from One Family (B3)
Building sq. ft.
4,200
Building dimensions
21 ft x 50 ft
Buildings on lot
1
Stories
3
Year built
1899
Last altered
2002
Building material
Brick
Exterior wall
Brick/Masonary
Basement
4
Sales
Sale date
08/01/2024
Sale price
$4,950,000
Tax
Tax year
2026-2027
Property tax
$18,032
Tax class
Floor area ratio (FAR)
Commercial FAR
Residential FAR
Buildable area
Zoning & Use
Zoning
Qualified opportunity zone
Residential units
2
Residential sq. ft.
Commercial units
0
Office sq. ft.
Retail sq. ft.
Lot
Frontage(s)
Union Street (wide)
Distance to wide street
Lot dimensions
21 ft x 95 ft
Lot sq. ft.
1,995

Area overview

Walk score
99 /100.  Walker's Paradise
Transit score
100 /100.  Rider's Paradise
Bike score
91 /100.  Biker's Paradise
School district
15
Community district
6
Closest police station
0.45 Miles
Closest fire station
0.09 Miles

View more such as transportation, nearby schools and risk designations.

Units for 820 Union Street, Brooklyn, NY

Ownership

Ownership information for 820 Union Street, Brooklyn, NY

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Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 820 Union Street, Brooklyn, NY 11215

Sale date Sale price Buyer name Seller name
08/01/2024 $4,950,000 XXX XXXXX XXX XXXXXX, XXXX X

*Most recent sale on record for this property.

More about New York City property records.

Title documents

Date Type Amount Party 1 Party 2
08/19/2024 - R
08/01/2024 - D		 Mortgage
(2024081500080002)		 XXX XXXXX XXX XXXXX XXXXX XXXX X X
08/19/2024 - R
08/01/2024 - D		 Deed
(2024081500080001)		 XXXXXX XXXX X XXX XXXXX XXX
07/27/2012 - R
06/22/2012 - D		 Deed
(2012071700369001)		 XXXXXX XXXX X XXXXXX XXXX X
01/17/2012 - R
12/13/2011 - D		 Agreement
(2011122300443004)		 XXXXXX XXXX X XXXXXXXX XXXXX XXXX X X
01/17/2012 - R
12/13/2011 - D		 Mortgage
(2011122300443003)		 XXXXXX XXXX X XXXXXXXX XXXXX XXXX X X
01/17/2012 - R
12/04/2011 - D		 Deed
(2011122300443002)		 XXXXXX XXXX X XXXXXX XXXX X
01/17/2012 - R
12/04/2011 - D		 Power of Attorney
(2011122300443001)		 XXXXXXXXXX XXXXXXX X XXXXXX XXXX X
04/13/2007 - R
03/29/2007 - D		 Mortgage
(2007040600387001)		 XXXXXX XXXX X XXXXXXXXXX XXXXXX XXXX XX
04/17/2007 - R
02/26/2007 - D		 Mortgage
(2007032901079001)		 XXXXXX XXXX X
01/30/2002 - R Mortgage
(3310007979431)		 XXXXXX XXXX X XXXXXXXXXX XXXXXX XXXX XX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 820 Union Street, Brooklyn, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2025-2026
Property tax
$18,032
Municipal exemptions
Recent tax assessments
Market value
$5,081,000
Assessed value
$304,860

More about New York City property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Market value Assessed value Taxable amount Tax rate Base tax Property tax Y-o-Y change
2025/26 $4,665,000 $279,900 $103,260 19.843% $20,490 $17,060 -13.88%
2024/25 $4,460,000 $267,600 $98,635 20.085% $19,811 $19,811 +4.60%
2023/24 $3,942,000 $236,520 $94,301 20.085% $18,940 $18,940 +2.82%
2022/23 $4,096,000 $245,760 $90,707 20.309% $18,422 $18,422 +4.04%
2021/22 $3,591,000 $215,460 $88,693 19.963% $17,993 $17,706 -0.60%
2020/21 $4,354,000 $261,240 $84,640 21.045% $18,109 $17,812 +4.15%
2019/20 $4,577,000 $274,620 $80,796 21.167% $17,398 $17,102 +6.00%
2018/19 $4,707,000 $282,420 $77,124 20.919% $16,439 $16,134 +6.78%
2017/18 $4,419,000 $265,140 $74,119 20.385% $15,409 $15,109 +2.74%
2016/17 $4,066,000 $243,960 $73,561 19.991% $15,015 $14,706 +7.24%
Permits

Permit information for 820 Union Street, Brooklyn, NY

Filing date Job type Job status Job description Initial cost
08/19/2025 Alteration
11/20/2024 Alteration
11/20/2024 Alteration
11/19/2024 Alteration
11/14/2024 Alteration

*Most recent permits on record for this property.

More about New York City property records

Violations

HPD Violations

Violation ID Inspection date Class NOV issue date Status
09/25/1987 B
07/16/1987 B

*Most recent HPD violations on record for this property.

Neighborhood

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

$1,619,646

12.4% Y-o-Y

Median price/sq. ft.

$1,514

6.4% Y-o-Y

Brooklyn median sale price

$899,000

6% Y-o-Y

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

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

Property location map
FEMA flood zones
X

Hurricane evacuation zones

Property location map
Hurricane evacuation zones
-

Subway & traffic

Closest station
Flatbush Ave & Plaza Street West at NW Corner
Station lines
2-3
Distance (miles)
0.218
View subway map

Access the detailed traffic volume map for 820 Union Street, Brooklyn, NY 11215 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity. View daily traffic map

Schools

Nearest elementary schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
P.S. 321 William Penn 9 Yes Public K-5 1,216 0.24
St Francis Xavier School NR No Private PK-8 175 0.10
St Francis Xavier School NR No Private PK-8 175 0.10
Berkeley Carroll School NR No Private PK-12 977 0.12
Berkeley Carroll School NR No Private PK-12 977 0.12
The Montessori School of New York - Brooklyn NR No Private PK, K-6 0 0.13
P.S. 282 Park Slope 5 No Public PK, K-5 496 0.22
P.S. 282 Park Slope 5 No Public PK, K-5 496 0.22
P.S. 77 NR No Public K-12 304 0.33
Nearest middle schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
St Francis Xavier School NR No Private PK-8 175 0.10
Berkeley Carroll School NR No Private PK-12 977 0.12
Berkeley Carroll Elementary School NR No Private PK-12 940 0.15
Is 340 7 No Public 6-8 150 0.32
P.S. 77 NR No Public K-12 304 0.33
Ms 266 Park Place Community Middle School 4 No Public 6-8 69 0.33
Poly Prep Lower School NR No Private 0 0.35
Park Slope Collegiate 4 No Public 6-12 577 0.38
Park Slope Christian Academy NR No Private PK, K-8 37 0.45
Ms 51 William Alexander 7 No Public 6-8 1,026 0.51
Nearest high schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
Berkeley Carroll School NR No Private PK-12 977 0.12
Berkeley Carroll Elementary School NR No Private PK-12 940 0.15
P.S. 77 NR No Public K-12 304 0.33
Poly Prep Lower School NR No Private 0 0.35
Park Slope Collegiate 4 No Public 6-12 577 0.38
Cyberarts Studio Academy 2 No Public 9-12 298 0.38
John Jay School for Law 3 No Public 9-12 461 0.38
Millennium Brooklyn High School 10 No Public 9-12 721 0.38
St Saviour High School NR No Private 9-12 400 0.50
P.S. 753 School For Career Development NR No Public 6-12 354 0.66

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 820 Union Street, Brooklyn, NY

816 Union St, Brooklyn 830 Union St, Brooklyn 925 Union St, Brooklyn 47 Plaza St W, Brooklyn 836 Union St, Brooklyn 39 Plaza St W, Brooklyn 832 Union St, Brooklyn 838 Union St, Brooklyn 99 7th Ave, Brooklyn 45 Plaza St W, Brooklyn 272 Berkeley Pl, Brooklyn 834 Union St, Brooklyn 822 Union St, Brooklyn 824 Union St, Brooklyn 826 Union St, Brooklyn 828 Union St, Brooklyn 840 Union St, Brooklyn 818 Union St, Brooklyn 814 Union St, Brooklyn 276 Berkeley Pl, Brooklyn

Nearby ZIP codes for 820 Union Street, Brooklyn, NY

10004, New York City, NY 10005, New York City, NY 10038, New York City, NY 10271, New York City, NY 11201, New York City, NY 11204, New York City, NY 11205, New York City, NY 11213, New York City, NY 11216, New York City, NY 11217, New York City, NY 11218, New York City, NY 11219, New York City, NY 11220, New York City, NY 11225, New York City, NY 11226, New York City, NY 11228, New York City, NY 11230, New York City, NY 11231, New York City, NY 11232, New York City, NY 11238, New York City, NY

Frequently asked questions

What is the year built for 820 Union Street, Brooklyn, NY 11215?

The development at 820 Union Street, Brooklyn, NY 11215 was built in 1899.

What is the total square footage of 820 Union Street, Brooklyn, NY 11215?

820 Union Street, Brooklyn, NY 11215 has a total of 4,200 square feet.

When was 820 Union Street, Brooklyn, NY 11215 last sold and what was the sale price?

820 Union Street, Brooklyn, NY 11215 was last sold on 08/01/2024 for $4,950,000.

What is the assessed value of 820 Union Street, Brooklyn, NY 11215?

820 Union Street, Brooklyn, NY 11215 is currently assessed at $304,860.

What are the property taxes for 820 Union Street, Brooklyn, NY 11215?

The property taxes for 820 Union Street, Brooklyn, NY 11215 total $21,462.

How many residential units does this building have?

This building has 2 residential unit(s).

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