New York City  »  11231  »  Union St  »  397 Union St

397 Union Street, Brooklyn, NY 11231 - Property report

Also known as: 397 Union St

Property image for 397 Union Street, Brooklyn, NY 11231
static Mapbox map

Property type

Miscellaneous Two Family (B9)

Year built

1900

Lot sq. ft.

1,800

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
397 Union Street
ZIP code
11231
Neighborhood
Carroll Gardens
Borough
Brooklyn
Block & lot
00429-0054

Owner

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Building
Property type
Miscellaneous Two Family (B9)
Building sq. ft.
2,856
Building dimensions
20 ft x 40 ft
Buildings on lot
1
Stories
3
Year built
1900
Last altered
2002
Building material
Brick
Exterior wall
Brick/Masonary
Basement
4
Tax
Tax year
2026-2027
Property tax
$10,776
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 (narrow)
Nearest wide street
Hoyt Street
Distance to wide street
Lot dimensions
20 ft x 90 ft
Lot sq. ft.
1,800

Area overview

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

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

Ownership

Ownership information for 397 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 397 Union Street, Brooklyn, NY 11231

No recently recorded sales for this property.

More about New York City property records.

Title documents

Date Type Amount Party 1 Party 2
07/05/2024 - R
06/29/2024 - D		 Deed
(2024070200522001)		 XXXX XXXXXXX XXXXXXXXX XXXXX XXXXXX XXXXX
01/31/2024 - R
01/25/2024 - D		 Mortgage
(2024013000062001)		 XXXX XXXXXXX XXXXXXXXX XXXXX XXXXXXXX XXXXXXXXXX
06/23/2021 - R
05/25/2021 - D		 Deed
(2021061400994001)		 XXXXXXX XXX XXXXXXX XXXX
10/21/1985 - R Satisfaction of Mortgage
(3230001120123)		 XXXXXXX XXX XXXXXXX XXXXXX X
03/08/1972 - R Mortgage
(37230054300003)		 XXXXXXX XXX XXXXXXX XXXXXX X
06/30/1967 - R Deed
(36730046400155)		 XXXXXXX XXXX X XXXXXXX XXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 397 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
$10,776
Municipal exemptions
Recent tax assessments
Market value
$3,568,000
Assessed value
$214,080

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 $4,097,000 $245,820 $51,892 19.843% $10,297 $10,297 +3.34%
2024/25 $3,236,000 $194,160 $49,612 20.085% $9,965 $9,965 0.00%
2023/24 $2,860,000 $171,600 $49,612 20.085% $9,965 $9,965 +3.53%
2022/23 $2,341,000 $140,460 $47,392 20.309% $9,625 $9,625 +15.13%
2021/22 $2,567,000 $154,020 $41,876 19.963% $9,034 $8,360 -0.60%
2020/21 $3,113,000 $186,780 $39,963 21.045% $9,100 $8,410 +4.19%
2019/20 $3,304,000 $198,240 $38,133 21.167% $8,751 $8,072 +1.32%
2018/19 $4,423,000 $265,380 $38,083 20.919% $8,649 $7,967 +7.71%
2017/18 $3,175,000 $190,500 $36,283 20.385% $8,051 $7,396 +92.22%
2016/17 $3,110,000 $186,600 $19,248 19.991% $7,539 $3,848 +8.23%
Permits

Permit information for 397 Union Street, Brooklyn, NY

Filing date Job type Job status Job description Initial cost
04/07/2004 Alteration type 2
02/12/2004 Alteration type 2
01/09/2002 Alteration type 2

*Most recent permits on record for this property.

More about New York City property records

Violations

HPD Violations

No recently recorded violations for this property.

Neighborhood

Carroll Gardens, Columbia, RedHook residential market stats

Access a detailed real estate market overview of Carroll Gardens, Columbia, RedHook so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Carroll Gardens, Columbia, RedHook and compare it to other neighborhoods in Brooklyn.

Median sale price

—

Median price/sq. ft.

—

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
6

Subway & traffic

Closest station
Smith St & President St at NE Corner
Station lines
F-G
Distance (miles)
0.107
View subway map

Access the detailed traffic volume map for 397 Union Street, Brooklyn, NY 11231 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. 32 Samuels Mills Sprole 6 Yes Public PK, K-5 452 0.08
P.S. 32 Samuels Mills Sprole 6 Yes Public PK, K-5 452 0.08
P.S. 58 The Carroll 8 No Public PK, K-5 751 0.19
P.S. 58 The Carroll 8 No Public PK, K-5 751 0.19
Hannah Senesh Community Day School NR No Private K-8 231 0.21
Pache Montessori NR No Private PK-K 122 0.26
Pache Montessori NR No Private PK-K 122 0.26
Success Academy Cobble Hill 9 No Charter K-4 401 0.27
Rivendell School NR No Private PK-K 103 0.43
Rivendell School NR No Private PK-K 103 0.43
Nearest middle schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
Hannah Senesh Community Day School NR No Private K-8 231 0.21
School For International Studies 5 No Public 6-12 782 0.27
Mary McDowell Friends School NR No Private 6-10 290 0.42
International School of Brooklyn NR No Private PK, K-8 0 0.46
International School of Brooklyn NR No Private PK-8 369 0.46
Brooklyn Heights Montessori School NR No Private PK-8 260 0.46
P.S. 372 The Children S School NR No Public PK, K-8 436 0.48
Brooklyn Secondary School For Collaborative Studie 6 No Public 6-12 671 0.53
P.S. 369 Coy L Cox School NR No Public K-12 487 0.62
The Math And Science Exploratory School 7 No Public 6-8 522 0.65
Nearest high schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
New Dawn Charter High School 2 No Charter 9-12 233 0.16
Cobble Hill School of American Studies 1 No Public 9-12 316 0.26
Digital Arts and Cinema Technology High School 8 No Public 9-12 331 0.27
School For International Studies 5 No Public 6-12 782 0.27
Mary McDowell Friends School NR No Private 6-10 290 0.42
Al-Madinah School NR No Private PK-12 790 0.52
Brooklyn Secondary School For Collaborative Studie 6 No Public 6-12 671 0.53
P.S. 369 Coy L Cox School NR No Public K-12 487 0.62
Brooklyn Frontiers High School 3 No Public 9-12 145 0.62
Brooklyn High School of the Arts 5 No Public 9-12 927 0.65

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

Neighbors for 397 Union Street, Brooklyn, NY

395 Union St, Brooklyn 391 Union St, Brooklyn 379 Union St, Brooklyn 399 Union St, Brooklyn 399 A Union St, Brooklyn 405 Union St, Brooklyn 393 Union St, Brooklyn 381 Union St, Brooklyn 403 Union St, Brooklyn 389 Union St, Brooklyn 413 Union St, Brooklyn 296 Hoyt St, Brooklyn 387 Union St, Brooklyn 383 Union St, Brooklyn 377 Union St, Brooklyn 409 Union St, Brooklyn 411 Union St, Brooklyn 401 Union St, Brooklyn 407 Union St, Brooklyn 385 Union St, Brooklyn

Nearby ZIP codes for 397 Union Street, Brooklyn, NY

10002, New York City, NY 10004, New York City, NY 10005, New York City, NY 10006, New York City, NY 10007, New York City, NY 10038, New York City, NY 10271, New York City, NY 10278, New York City, NY 10279, New York City, NY 10280, New York City, NY 10282, New York City, NY 11201, New York City, NY 11205, New York City, NY 11215, New York City, NY 11217, New York City, NY 11218, New York City, NY 11219, New York City, NY 11220, New York City, NY 11232, New York City, NY 11238, New York City, NY

Frequently asked questions

What is the year built for 397 Union Street, Brooklyn, NY 11231?

The development at 397 Union Street, Brooklyn, NY 11231 was built in 1900.

What is the total square footage of 397 Union Street, Brooklyn, NY 11231?

397 Union Street, Brooklyn, NY 11231 has a total of 2,856 square feet.

What is the assessed value of 397 Union Street, Brooklyn, NY 11231?

397 Union Street, Brooklyn, NY 11231 is currently assessed at $214,080.

What are the property taxes for 397 Union Street, Brooklyn, NY 11231?

The property taxes for 397 Union Street, Brooklyn, NY 11231 total $10,776.

How many residential units does this building have?

This building has 2 residential unit(s).

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