New York City  »  11209  »  4th Ave  »  9921 4th Ave

9921 4th Avenue #P1, Brooklyn, NY 11209 - Property report

Also known as: 401-411 100th St #P1

Property image for 9921 4th Avenue #P1, Brooklyn, NY 11209
static Mapbox map

Property type

Office Space (RB)

Year built

1986

Lot sq. ft.

21,938

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
9921 4th Avenue #P1
Alternate address(es)
401-411 100th St #P1
ZIP code
11209
Neighborhood
Bay Ridge
Borough
Brooklyn
Block & lot
06135-1001

Owner

Find out who owns 9921 4th Avenue #P1, Brooklyn, NY 11209. Uncover corporate and individual owners with a free account.

Building
Property type
Office Space (RB)
Unit sq. ft.
2,848
Buildings on lot
1
Year built
1986
Tax
Tax year
2026-2027
Property tax
$38,930
Tax class
Zoning & Use
Residential units
52
Commercial units
4
Lot
Lot dimensions
195 ft x 113 ft
Lot sq. ft.
21,938

Area overview

Walk score
91 /100.  Walker's Paradise
Transit score
87 /100.  Excellent Transit
Bike score
76 /100.  Very Bikeable
School district
20
Community district
10
Closest police station
1.74 Miles
Closest fire station
0.34 Miles

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

Ownership

Ownership information for 9921 4th Avenue #P1, Brooklyn, NY

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

Sales history for 9921 4th Avenue #P1, Brooklyn, NY 11209

No recently recorded sales for this property.

More about New York City property records.

Title documents

Date Type Amount Party 1 Party 2
08/25/2020 - R
08/11/2020 - D		 Deed
(2020082500130001)		 XXXX XXXXX XXX XXXXX XXXX XXX
08/08/2012 - R UCC3 Continuation
(2012080800215001)		 XXXXXXXXX XXXXXX XXXX XXXXXX XXX XXXX XXXXXXXXX XXXX
08/03/2007 - R
06/27/2007 - D		 UCC3 Continuation
(2007062701746001)		 XXXX XXXXX XXXXXX XXXX XXXXXX XX XXXXX XXXXXXXXX XXXX
02/03/2005 - R
07/30/2004 - D		 Amended Declaration
(2004111900782001)		 XXXXXX XXX XXXXXXXX
09/11/2002 - R Initial UCC1
(3600008792660)		 XXXX XXXXX XXXXXXXXXX XXXXXX XXX XXXX XXXXXXXXX XXXX
07/13/2001 - R
06/11/2001 - D		 Deed
(3290007737929)		 XXXX XXXXX XXXXXXXXXXX XXXXXX XXXX XXXXX
04/18/1995 - R Sundry Miscellaneous
(3240004742924)		 XXXX XXXXX XXXXXXXXXX XXXXXX XXXXXXXX XXXXXXX XXXXXXX XXXX
03/18/1988 - R Maps
(3230001845523)		 XXXXXX XXX XXXXXXXX
03/18/1988 - R Declaration
(3860001351986)		 XXXXXXXXXX XXXXX XXXXX
10/23/1987 - R Mortgage
(3760001310276)		 XXXX XXXXX XXXXXXXXXX XXXXXXX XXX XXXX XXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 9921 4th Avenue #P1, 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
$38,930
Municipal exemptions
Recent tax assessments
Market value
$894,713
Assessed value
$402,621

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 $817,076 $367,684 $330,766 10.848% $35,881 $35,881 +2.11%
2024/25 $806,473 $362,913 $326,519 10.762% $35,140 $35,140 +4.94%
2023/24 $759,959 $341,982 $316,145 10.592% $33,486 $33,486 -0.61%
2022/23 $786,295 $353,833 $316,462 10.646% $33,691 $33,691 +19.52%
2021/22 $582,453 $262,104 $262,104 10.755% $28,189 $28,189 -13.87%
2020/21 $769,878 $346,445 $306,058 10.694% $32,730 $32,730 +9.12%
2019/20 $691,214 $311,046 $284,646 10.537% $29,993 $29,993 +6.39%
2018/19 $686,426 $308,892 $268,130 10.514% $28,191 $28,191 +9.67%
2017/18 $658,039 $296,118 $244,492 10.514% $25,706 $25,706 +12.79%
2016/17 $595,108 $267,799 $215,529 10.574% $22,790 $22,790 +9.89%
Permits

Permit information for 9921 4th Avenue #P1, Brooklyn, NY

No recently recorded permits for this property.

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Violations

DOB Violations

No recently recorded violations 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

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FEMA flood zones

Property location map
FEMA flood zones
-

Hurricane evacuation zones

Property location map
Hurricane evacuation zones
-

Subway & traffic

Closest station
4th Ave & 95th St at SW Corner
Station lines
R
Distance (miles)
0.229
View subway map

Access the detailed traffic volume map for 9921 4th Avenue #P1, Brooklyn, NY 11209 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 9921 4th Avenue #P1, Brooklyn, NY

123 A 2nd Pl, Brooklyn 643 Vanderbilt Ave, Brooklyn 297 Van Brunt St, Brooklyn 164 A Lefferts Pl, Brooklyn 32 Grafton St, Brooklyn 155 Crystal St, Brooklyn 200 E 39th St, Brooklyn 25 Tapscott St, Brooklyn 2042 W 5th St, Brooklyn 37 Tapscott St, Brooklyn 488 A 17th St, Brooklyn 1355 Rogers Ave, Brooklyn 2002 Haring St, Brooklyn 111 Bay 46 St, Brooklyn 103 Liberty Ave, Brooklyn 4212 Fillmore Ave, Brooklyn 3072 Cropsey Ave, Brooklyn 1853 Bay Ridge Ave, Brooklyn 476 Pulaski St, Brooklyn 1473 50th St, Brooklyn

Nearby ZIP codes for 9921 4th Avenue #P1, Brooklyn, NY

10004, New York City, NY 10301, New York City, NY 10304, New York City, NY 11201, New York City, NY 11204, New York City, NY 11214, 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 11223, New York City, NY 11224, 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

Frequently asked questions

What is the year built for 9921 4th Avenue #P1, Brooklyn, NY 11209?

The development at 9921 4th Avenue #P1, Brooklyn, NY 11209 was built in 1986.

What is the market value of 9921 4th Avenue #P1, Brooklyn, NY 11209?

The current market value of 9921 4th Avenue #P1, Brooklyn, NY 11209 is $894,713.

What is the total square footage of 9921 4th Avenue #P1, Brooklyn, NY 11209?

9921 4th Avenue #P1, Brooklyn, NY 11209 has a total of 2,848 square feet.

How many commercial spaces does this building have?

The number of commercial spaces in this building is 1.

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