Kings  »  11237  »  Knickerbocker Ave  »  309 Knickerbocker Ave

309 Knickerbocker Avenue, Brooklyn, NY 11237 - Property report

Also known as: 811-815 Hart St

Property image for 309 Knickerbocker Avenue, Brooklyn, NY 11237
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Property type

Primarily Five to Six Family with One Store or Office (S5)

Year built

1931

Lot sq. ft.

2,500

General information

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Address
Primary address
309 Knickerbocker Avenue
Alternate address(es)
811-815 Hart St
ZIP code
11237
Neighborhood
Bushwick
Borough
Brooklyn
Block & lot
03220-0001

Owner

Find out who owns 309 Knickerbocker Avenue, Brooklyn, NY 11237. Uncover corporate and individual owners with a free account.

Building
Property type
Primarily Five to Six Family with One Store or Office (S5)
Building sq. ft.
7,410
Building dimensions
25 ft x 65 ft
Buildings on lot
1
Stories
4
Year built
1931
Building material
Tax
Tax year
2026-2027
Property tax
$31,341
Tax class
Floor area ratio (FAR)
Commercial FAR
Residential FAR
Buildable area
Zoning & Use
Zoning
Qualified opportunity zone
Residential units
6
Residential sq. ft.
Office sq. ft.
Retail sq. ft.
Lot
Lot dimensions
25 ft x 100 ft
Lot sq. ft.
2,500

Area overview

Walk score
98 /100.  Walker's Paradise
Transit score
99 /100.  Rider's Paradise
Bike score
96 /100.  Biker's Paradise
School district
32
Community district
4
Closest police station
0.36 Miles
Closest fire station
0.29 Miles

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

Ownership

Ownership information for 309 Knickerbocker Avenue, Brooklyn, NY

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

Sales history for 309 Knickerbocker Avenue, Brooklyn, NY 11237

No recently recorded sales for this property.

More about New York City property records.

Title documents

Date Type Amount Party 1 Party 2
05/09/2023 - R UCC3 Continuation
(2023050500853001)		 XXXXXXXXXX XXXXXXXXXX X X XXXXXXXXX XXXXXXXXXXXX XXXXXXXXXXX
09/23/2004 - R Initial UCC1
(2004091000112001)		 XXXXXXXX XXXXXXXXXXX XXX XXXXXXX XXXXXXX XXXXXXX XXX XXXX XXXXXXXXXXX
09/23/2004 - R
08/30/2004 - D		 Assignment of Leases and Rents
(2004091000085002)		 XXXXXXX XXXXXXX XXXXXXX XXX XXXX XXXXXXXXXXX XXXXXXXX XXXXXXXXXXX XXX
09/23/2004 - R
08/30/2004 - D		 Mortgage
(2004091000085001)		 XXXXXXXX XXXXXXXXXXX XXX XXXXXXX XXXXXXX XXXXXXX XXX XXXX XXXXXXXXXXX
03/26/2002 - R Discharge of Tax Lien
(3030008337603)		 XXXX XX XXX XXXX
05/16/2000 - R Sundry Miscellaneous
(3990007160499)		 XXXX XX XXX XXXX XXXX XX XXX XXXX
01/20/2000 - R Satisfaction of Mortgage
(3330007016933)
10/28/1999 - R Sundry Miscellaneous
(3340006843934)
02/07/2000 - R
10/21/1999 - D		 Deed
(3090007056609)		 XXXXX XXXXXXX XXXX XXXXXXXX XXXXXXXXXXXXXX
06/29/1999 - R Tax Lien Sale Certificate
(FT_3290006664929)		 XXXX XX XXX XXXX XXXX XX XXX XXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 309 Knickerbocker Avenue, 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
$31,341
Municipal exemptions
Recent tax assessments
Market value
$1,690,000
Assessed value
$760,500

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 $1,493,000 $671,850 $244,143 12.439% $30,369 $30,369 +7.47%
2024/25 $1,401,000 $630,450 $226,058 12.5% $28,257 $28,257 +7.98%
2023/24 $1,340,000 $603,000 $209,316 12.502% $26,169 $26,169 +10.07%
2022/23 $1,317,000 $592,650 $193,813 12.267% $23,775 $23,775 +0.26%
2021/22 $1,215,000 $546,750 $193,813 12.235% $23,713 $23,713 +2.93%
2020/21 $1,333,000 $599,850 $187,802 12.267% $23,038 $23,038 +6.22%
2019/20 $1,267,200 $570,240 $173,891 12.473% $21,689 $21,689 +6.81%
2018/19 $1,056,000 $475,200 $161,012 12.612% $20,307 $20,307 +7.09%
2017/18 $969,000 $436,050 $149,087 12.719% $18,962 $18,962 -1.34%
2016/17 $856,000 $385,200 $149,087 12.892% $19,220 $19,220 +3.27%
Permits

Permit information for 309 Knickerbocker Avenue, Brooklyn, NY

Filing date Job type Job status Job description Initial cost
08/15/2019 Alteration
05/17/2019 Alteration
01/15/2019 Alteration type 2
06/09/2016 Alteration type 2
01/06/2006 Alteration type 2

*Most recent permits on record for this property.

More about New York City property records

Violations

DOB Violations

Violation ID Issue date Type Status
11/14/2025 Lblvio-low pressure boiler boiler required
10/21/2015 Aeuhaz1-fail to certify class 1
10/21/2015 Aeuhaz1-fail to certify class 1

*Most recent DOB violations on record for this property.

Neighborhood

Brooklyn commercial market stats

Review a detailed real estate market overview of Brooklyn and assess current trends, property values, property types sold and transaction volumes. View the median price per square foot in Brooklyn and compare it to other New York City boroughs.

Q2 2026 median price/sq. ft.

$533

1.5% Y-o-Y

Q1 2026 median price/sq. ft.

$471

-8.9% Y-o-Y

2025 median price/sq. ft.

$523

5.2% 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
Dekalb Ave & Wycoff Ave at SE Corner
Station lines
L
Distance (miles)
0.258
View subway map

Access the detailed traffic volume map for 309 Knickerbocker Avenue, Brooklyn, NY 11237 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

Neighbors for 309 Knickerbocker Avenue, Brooklyn, NY

284 Suydam St, Brooklyn 280 Suydam St, Brooklyn 751 Hart St, Brooklyn 307 Knickerbocker Ave, Brooklyn 301 Knickerbocker Ave, Brooklyn 763 Hart St, Brooklyn 278 Suydam St, Brooklyn 282 Suydam St, Brooklyn 769 Hart St, Brooklyn 773 Hart St, Brooklyn 775 Hart St, Brooklyn 286 Suydam St, Brooklyn 761 Hart St, Brooklyn 779 Hart St, Brooklyn 299 Knickerbocker Ave, Brooklyn 767 Hart St, Brooklyn 305 Knickerbocker Ave, Brooklyn 291 Knickerbocker Ave, Brooklyn 757 Hart St, Brooklyn

Nearby ZIP codes for 309 Knickerbocker Avenue, Brooklyn, NY

11101, New York City, NY 11104, New York City, NY 11203, New York City, NY 11205, New York City, NY 11206, New York City, NY 11207, New York City, NY 11211, New York City, NY 11212, New York City, NY 11213, New York City, NY 11216, New York City, NY 11221, New York City, NY 11222, New York City, NY 11225, New York City, NY 11233, New York City, NY 11238, New York City, NY 11373, New York City, NY 11377, New York City, NY 11378, New York City, NY 11379, New York City, NY 11385, New York City, NY

Frequently asked questions

What is the year built for 309 Knickerbocker Avenue, Brooklyn, NY 11237?

The development at 309 Knickerbocker Avenue, Brooklyn, NY 11237 was built in 1931.

What is the market value of 309 Knickerbocker Avenue, Brooklyn, NY 11237?

The current market value of 309 Knickerbocker Avenue, Brooklyn, NY 11237 is $1,690,000.

What is the total square footage of 309 Knickerbocker Avenue, Brooklyn, NY 11237?

309 Knickerbocker Avenue, Brooklyn, NY 11237 has a total of 7,410 square feet.

How many commercial spaces does this building have?

The number of commercial spaces in this building is 1.

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