New York City » 11231 » Union St » 347 Union St

347 Union Street, Brooklyn, NY 11231 - Property report

Also known as: 347 Union St

Property image for 347 Union Street, Brooklyn, NY 11231

Property type

Miscellaneous Two Family (B9)

Year built

1901

Lot sq. ft.

1,600

General information

Address

Primary address

347 Union Street

ZIP code

11231

Neighborhood

Carroll Gardens

Borough

Brooklyn

Block & lot

00428-0042

Building

Property type

Miscellaneous Two Family (B9)

Building sq. ft.

3,360

Building dimensions

20 ft x 42 ft

Buildings on lot

Stories

Year built

1901

Building material

Brick

Exterior wall

Brick/Masonary

Basement

Tax

Tax year

2026-2027

Property tax

$9,217

Tax class

Floor area ratio (FAR)

Commercial FAR

Residential FAR

Buildable area

Zoning & Use

Zoning

Qualified opportunity zone

Residential units

Residential sq. ft.

Commercial units

Office sq. ft.

Retail sq. ft.

Lot

Frontage(s)

Union Street (narrow)

Nearest wide street

Court Street

Distance to wide street

Lot dimensions

20 ft x 80 ft

Lot sq. ft.

1,600

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

Community district

Closest police station

0.33 Miles

Closest fire station

0.60 Miles

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

Ownership

Ownership information for 347 Union Street, Brooklyn, NY

Unlock full ownership info — get contact details, including phone numbers and emails for owners and the real people behind LLCs.

Property owner name

Registered owner

Source

Deed

Owner contact information

Phone number

Owner address

Documents

Sales history for 347 Union Street, Brooklyn, NY 11231

No recently recorded sales for this property.

More about New York City property records.

Title documents

Date	Type	Party 1	Party 2
09/04/2013 - R 07/25/2013 - D	Satisfaction of Mortgage (2013080500186001)	XXXXXXXX XXXX X	XX XXXX
02/03/2004 - R 06/26/2003 - D	Agreement (2003102500352004)	XXXXXX XXXX X	X X XXXXXXXX XXXXXXXXXXX
02/03/2004 - R 06/26/2003 - D	Mortgage (2003102500352003)	XXXXXX XXXX X	X X XXXXXXXX XXXXXXXXXXX
02/03/2004 - R 06/06/2003 - D	Assignment, Mortgage (2003102500352002)	XXXXXXX XXXXXXX XXXXXXX XXX XXXX XXXXXXXXXXX	X X XXXXXXXX XXXXXXXXXXX
03/26/2003 - R 03/17/2003 - D	Release (2003031801158001)	XXXXXXXX XXXX	XXX XXXX XXXXXXXXX (XXXXXXX)
06/12/1998 - R	Easement (3740006089074)	XXXXXX XXXXXXX	XXX XXXX XXXXXXXXX XXXXXXX
05/30/1995 - R	Mortgage (3810004793181)	XXXXXX XXXX X	XXXXXXX XXX XXXX XXXXXXX XXXX
02/03/2004 - R 05/10/1995 - D	Agreement (2003102500352001)	XXXXXX XXXX X	XXX XXXXXXX XXX XXXX XXXXXXX XXXX
05/19/1980 - R	Mortgage (38030116001173)	XXXXXXXX XXXX X	XXX XXXXXXX XX XXXXXXX XXXX
05/19/1980 - D 05/19/1980 - R	Deed (38030116001171)	XXX XXXXX XX XXXXXX XXXX	XXXXXX XXXX X

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 347 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

$9,217

Municipal exemptions

Recent tax assessments

Market value

$4,502,000

Assessed value

$270,120

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	$3,802,000	$228,120	$43,725	19.843%	$8,958	$8,676	-0.49%
2024/25	$4,094,000	$245,640	$43,410	20.085%	$8,988	$8,719	+6.29%
2023/24	$3,830,000	$229,800	$40,842	20.085%	$8,484	$8,203	+5.14%
2022/23	$3,681,000	$220,860	$38,417	20.309%	$8,099	$7,802	+1.68%
2021/22	$3,845,000	$230,700	$38,437	19.963%	$7,961	$7,673	+0.69%
2020/21	$4,264,000	$255,840	$36,211	21.045%	$7,917	$7,621	+0.31%
2019/20	$3,592,000	$215,520	$35,892	21.167%	$7,894	$7,597	+7.63%
2018/19	$3,832,000	$229,920	$33,742	20.919%	$7,364	$7,058	+9.02%
2017/18	$3,468,000	$208,080	$31,761	20.385%	$6,774	$6,474	+2.23%
2016/17	$3,537,000	$212,220	$31,681	19.991%	$6,643	$6,333	+8.79%

Permits

Permit information for 347 Union Street, Brooklyn, NY

No recently recorded permits 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

FEMA flood zones

Hurricane evacuation zones

Subway & traffic

Closest station

Smith St & President St at NW Corner

Station lines

F-G

Distance (miles)

0.058

View subway map

Access the detailed traffic volume map for 347 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	0.18
P.S. 32 Samuels Mills Sprole	6	Yes	Public	PK, K-5	452	0.18
P.S. 58 The Carroll	8	No	Public	PK, K-5	751	0.13
P.S. 58 The Carroll	8	No	Public	PK, K-5	751	0.13
Pache Montessori	NR	No	Private	PK-K	122	0.17
Pache Montessori	NR	No	Private	PK-K	122	0.17
Hannah Senesh Community Day School	NR	No	Private	K-8	231	0.18
Success Academy Cobble Hill	9	No	Charter	K-4	401	0.21
P.S. 29 John M Harrigan	9	No	Public	PK, K-5	721	0.39
P.S. 29 John M Harrigan	9	No	Public	PK, K-5	721	0.39

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	0.18
School For International Studies	5	No	Public	6-12	782	0.21
Mary McDowell Friends School	NR	No	Private	6-10	290	0.38
Brooklyn Heights Montessori School	NR	No	Private	PK-8	260	0.42
International School of Brooklyn	NR	No	Private	PK, K-8	0	0.43
International School of Brooklyn	NR	No	Private	PK-8	369	0.43
Brooklyn Secondary School For Collaborative Studie	6	No	Public	6-12	671	0.45
P.S. 372 The Children S School	NR	No	Public	PK, K-8	436	0.58
Summit Academy Charter School	5	No	Charter	6-12	203	0.65
Pave Academy Charter School	5	No	Charter	K-8	473	0.67

Nearest high schools

Name	Rating	Att. zoned	Type	Grade range	No of students	Distance (miles)
Digital Arts and Cinema Technology High School	8	No	Public	9-12	331	0.21
School For International Studies	5	No	Public	6-12	782	0.21
New Dawn Charter High School	2	No	Charter	9-12	233	0.21
Cobble Hill School of American Studies	1	No	Public	9-12	316	0.27
Mary McDowell Friends School	NR	No	Private	6-10	290	0.38
Brooklyn Secondary School For Collaborative Studie	6	No	Public	6-12	671	0.45
Al-Madinah School	NR	No	Private	PK-12	790	0.60
Brooklyn Frontiers High School	3	No	Public	9-12	145	0.61
Summit Academy Charter School	5	No	Charter	6-12	203	0.65
P.S. 369 Coy L Cox School	NR	No	Public	K-12	487	0.67

Neighbors for 347 Union Street, Brooklyn, NY

315 Union St, Brooklyn 313 Union St, Brooklyn 282 Smith St, Brooklyn 356 Sackett St, Brooklyn 337 Union St, Brooklyn 296 Smith St, Brooklyn 284 Smith St, Brooklyn 319 Union St, Brooklyn 317 Union St, Brooklyn 349 Union St, Brooklyn 290 Smith St, Brooklyn 288 Smith St, Brooklyn 286 Smith St, Brooklyn 354 Sackett St, Brooklyn 327 Union St, Brooklyn 329 Union St, Brooklyn 335 Union St, Brooklyn 325 Union St, Brooklyn

Frequently asked questions

What is the year built for 347 Union Street, Brooklyn, NY 11231?

The development at 347 Union Street, Brooklyn, NY 11231 was built in 1901.

What is the total square footage of 347 Union Street, Brooklyn, NY 11231?

347 Union Street, Brooklyn, NY 11231 has a total of 3,360 square feet.

What is the assessed value of 347 Union Street, Brooklyn, NY 11231?

347 Union Street, Brooklyn, NY 11231 is currently assessed at $270,120.

What are the property taxes for 347 Union Street, Brooklyn, NY 11231?

The property taxes for 347 Union Street, Brooklyn, NY 11231 total $9,217.

How many residential units does this building have?

This building has 2 residential unit(s).

Disclaimer

All data comes from government sources. No attempt has been made to validate it. No attempt has been made to validate the accuracy of the programming of this website.

Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.