New York City » 11231 » Union St » 447 Union St

447 Union Street, Brooklyn, NY 11231 - Property report

Also known as: 447 Union St

Property image for 447 Union Street, Brooklyn, NY 11231

Property type

City Residence One Family (A4)

Year built

1899

Lot sq. ft.

1,346

General information

Address

Primary address

447 Union Street

ZIP code

11231

Neighborhood

Gowanus

Borough

Brooklyn

Block & lot

00430-0062

Building

Property type

City Residence One Family (A4)

Building sq. ft.

1,088

Building dimensions

16.67 ft x 38 ft

Buildings on lot

Stories

Year built

1899

Building material

Brick

Exterior wall

Stucco

Basement

Tax

Tax year

2026-2027

Property tax

$5,641

Tax class

Floor area ratio (FAR)

Commercial FAR

Residential FAR

Buildable area

Zoning & Use

Zoning

Residential units

Residential sq. ft.

Lot

Frontage(s)

Union Street (narrow)

Nearest wide street

Hoyt Street

Distance to wide street

Lot dimensions

16.67 ft x 80 ft

Lot sq. ft.

1,346

Area overview

Walk score

97 /100. Walker's Paradise

Transit score

100 /100. Rider's Paradise

Bike score

95 /100. Biker's Paradise

School district

Community district

Closest police station

0.54 Miles

Closest fire station

0.60 Miles

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

Ownership

Ownership information for 447 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 447 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
09/12/2019 - R 09/09/2019 - D	Assignment, Mortgage (2019091200725001)	XXXXXXXXXX XXXXXXXX XXX	XXXX XXXXXXXX XXXXX
09/01/2017 - R 07/28/2017 - D	Deed (2017082800323001)	XXX XXXXXX XX XXXXX XXXXX	XXXXXXX XXXXX
08/19/2016 - R 08/09/2016 - D	Assignment, Mortgage (2016080900454001)	XXXXXXXXXXXX XXX	XXXXXXXXXX XXXXXXXX XXX
10/06/2015 - R	UCC3 Termination (2015100201359001)	XXXXX XXXX XXXX	XXXXXXX XXXX XXXXXXXXX XXX
05/21/2012 - R 02/15/2012 - D	Assignment, Mortgage (2012051500287001)	XXXXXXXX XXXX	XXXXXXXXXXXX XXX
10/07/2009 - R 06/26/2009 - D	Assignment, Mortgage (2009100100509001)	XXXXXXXX XXXXXXXXXX XXXXXXXXXXXX XXXXXXX XXX	XXXXXXXXXXXX
06/20/2008 - R 05/09/2008 - D	Satisfaction of Mortgage (2008052200082001)	XXXXX XXXXX	XXXXX XXXXXXX XXX XXXX XXXXXXXXXXX
06/11/2008 - R 05/09/2008 - D	Satisfaction of Mortgage (2008052000791001)	XXXXX XXXXX	XXXXX XXXXXXX XXX XXXX XXXXXXXXXXX
05/16/2008 - R 04/30/2008 - D	Mortgage (2008050800829001)	XXXXX XXXXX	XXXXXXXX XXXX X XXXXXXX XXXXXXX XXXX
02/01/2001 - R	Satisfaction of Mortgage (3180007507518)	XXXXX XXXXXXXXX	XXXXXXXX XXXXXXX XXXXXXX XXX XXXX XXXXXXXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 447 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

$5,641

Municipal exemptions

Recent tax assessments

Market value

$2,394,000

Assessed value

$143,640

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	$1,821,000	$109,260	$26,916	19.843%	$5,341	$5,341	+3.19%
2024/25	$1,787,000	$107,220	$25,769	20.085%	$5,176	$5,176	+3.45%
2023/24	$1,712,000	$102,720	$24,910	20.085%	$5,003	$5,003	-1.10%
2022/23	$1,876,000	$112,560	$24,910	20.309%	$5,059	$5,059	+6.98%
2021/22	$2,058,000	$123,480	$23,690	19.963%	$4,729	$4,729	+0.18%
2020/21	$2,496,000	$149,760	$22,430	21.045%	$4,720	$4,720	+3.85%
2019/20	$2,479,000	$148,740	$21,474	21.167%	$4,545	$4,545	+4.68%
2018/19	$2,037,000	$122,220	$20,758	20.919%	$4,342	$4,342	+21.39%
2017/18	$1,702,000	$102,120	$17,548	20.385%	$4,232	$3,577	+9.36%
2016/17	$1,608,000	$96,480	$16,362	19.991%	$3,947	$3,271	+9.68%

Permits

Permit information for 447 Union Street, Brooklyn, NY

Filing date	Job type	Job status	Job description	Initial cost
11/25/2024	Alteration
01/06/1995	Alteration type 1
08/03/1993	Alteration type 1
05/28/1993	Alteration type 1
07/12/1991	Alteration type 1

*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
	09/07/2010	B
	09/07/2010	B

*Most recent HPD violations on record 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 NE Corner

Station lines

F-G

Distance (miles)

0.196

View subway map

Access the detailed traffic volume map for 447 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	0.05
P.S. 32 Samuels Mills Sprole	6	Yes	Public	PK, K-5	452	0.05
P.S. 58 The Carroll	8	No	Public	PK, K-5	751	0.27
P.S. 58 The Carroll	8	No	Public	PK, K-5	751	0.27
Hannah Senesh Community Day School	NR	No	Private	K-8	231	0.27
Rivendell School	NR	No	Private	PK-K	103	0.33
Rivendell School	NR	No	Private	PK-K	103	0.33
Success Academy Cobble Hill	9	No	Charter	K-4	401	0.35
Pache Montessori	NR	No	Private	PK-K	122	0.36
Pache Montessori	NR	No	Private	PK-K	122	0.36

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	0.27
School For International Studies	5	No	Public	6-12	782	0.35
P.S. 372 The Children S School	NR	No	Public	PK, K-8	436	0.38
Al-Madinah School	NR	No	Private	PK-12	790	0.44
Mary McDowell Friends School	NR	No	Private	6-10	290	0.48
International School of Brooklyn	NR	No	Private	PK, K-8	0	0.49
International School of Brooklyn	NR	No	Private	PK-8	369	0.49
The Math And Science Exploratory School	7	No	Public	6-8	522	0.58
P.S. 369 Coy L Cox School	NR	No	Public	K-12	487	0.60
Brooklyn Secondary School For Collaborative Studie	6	No	Public	6-12	671	0.61

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	0.17
Cobble Hill School of American Studies	1	No	Public	9-12	316	0.30
School For International Studies	5	No	Public	6-12	782	0.35
Digital Arts and Cinema Technology High School	8	No	Public	9-12	331	0.35
Al-Madinah School	NR	No	Private	PK-12	790	0.44
Mary McDowell Friends School	NR	No	Private	6-10	290	0.48
Brooklyn High School of the Arts	5	No	Public	9-12	927	0.58
P.S. 369 Coy L Cox School	NR	No	Public	K-12	487	0.60
Brooklyn Secondary School For Collaborative Studie	6	No	Public	6-12	671	0.61
Brooklyn Frontiers High School	3	No	Public	9-12	145	0.66

Frequently asked questions

What is the year built for 447 Union Street, Brooklyn, NY 11231?

The development at 447 Union Street, Brooklyn, NY 11231 was built in 1899.

What is the total square footage of 447 Union Street, Brooklyn, NY 11231?

447 Union Street, Brooklyn, NY 11231 has a total of 1,088 square feet.

What is the assessed value of 447 Union Street, Brooklyn, NY 11231?

447 Union Street, Brooklyn, NY 11231 is currently assessed at $143,640.

What are the property taxes for 447 Union Street, Brooklyn, NY 11231?

The property taxes for 447 Union Street, Brooklyn, NY 11231 total $5,640.

How many residential units does this building have?

This building has 1 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.