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9921 4th Avenue #5F, Brooklyn, NY 11209 Property Information

9921 4th Avenue #5F, Brooklyn, NY 11209 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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9921 4th Avenue #5F, Brooklyn, NY 11209 1
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Address

Building name The Harbour At Bayridge
Primary address 9921 4th Avenue #5F
Secondary address 401-411 100th St
Neighborhood Bay Ridge
Zip code 11209
Borough Brooklyn
Block & lot 06135-1042

Sales & Tax Overview for 9921 4th Avenue #5F, Brooklyn

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Purchase date 08/08/2003
Purchase price $300,000
Tax class

Lot & Building Information for 9921 4th Avenue #5F, Brooklyn

Lot sq. ft. 21,937
Lot dimensions 195 ft x 113 ft
Property type Condo - Residential Unit in Elevator Building (R4)
Building sqft 1,110
Buildings on lot 1
Year built 1985
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Zoning & Use for 9921 4th Avenue #5F, Brooklyn

Residential units (DOF) 1

Area Overview

Walk Score
Transit Score
Bike Score


School district 20
Community district 10
Closest police station 1.74 Miles
Closest fire station 0.34 Miles

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Unit Overview

Unit # 5F
Square feet 1,110
Condo complex 300118

Other Property Data for 9921 4th Avenue #5F, Brooklyn

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Floor area ratio (FAR) for 9921 4th Avenue #5F, Brooklyn, NY 11209, including commercial and residential FAR, FAR as built and usable floor area.
Development maps such as planimetric, zoning, urban landscape, and HPD alternative enforcement program maps.
Violations for 9921 4th Avenue #5F, Brooklyn, NY 11209, including DOB violations, ECB violations, HPD violations and 311 complaints.

Alternate Addresses

You will find all alternate addresses for the property in this section.

  • 401-411 100th St, Brooklyn, NY 11209
  • 9911-9923 4th Ave, Brooklyn, NY 11209
  • 402-412 99th St, Brooklyn, NY 11209

About 9921 4th Avenue #5F, Brooklyn

What is the year built & the total sq. ft. for 9921 4th Avenue #5F, Brooklyn, NY 11209?

9921 4th Avenue #5F, Brooklyn, NY 11209 was built in 1985 and has a total of 1,110 square feet.

What is the assessed value of 9921 4th Avenue #5F, Brooklyn, NY 11209 and the property tax paid?

Assessed at $57,685, the tax amount paid for 9921 4th Avenue #5F, Brooklyn, NY 11209 is $2,512.

When was 9921 4th Avenue #5F, Brooklyn, NY 11209 last sold and what was the last sale price?

9921 4th Avenue #5F, Brooklyn, NY 11209 was last sold in 08/08/2003 for $300,000.

How many residential units does this building have?

This building has 1 residential unit(s).

Ownership Information for 9921 4th Avenue #5F, Brooklyn

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Property owner name for 9921 4th Avenue #5F, Brooklyn, NY 11209
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Building contacts for 9921 4th Avenue #5F, Brooklyn, NY 11209
Building management:
Representatives (from permits):
Tenants:
Real Estate Reports:
Eliza Theiss, Jun 23, 2026 NYC Resale Gains & Losses: Every Borough Made Money in 2025, Except Manhattan
In 2025, NYC home-sellers mostly made money. But, in Manhattan, resales came with losses — and it was apartments and recent buyers that absorbed them.
Eliza Theiss, Jun 04, 2026 World Cup or Your Mortgage/Rent? Ticket Prices Rival Host City Housing Costs
World Cup ticket prices rival monthly housing expenses in the 11 U.S. host cities, with even the cheapest seats covering weeks or even months of rent or mortgage payments.
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Past Sales & Property History for 9921 4th Avenue #5F, Brooklyn

Create a free account to view the complete sales history for 9921 4th Avenue #5F, Brooklyn, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.

Sale date Sale price Buyer name Seller name
08/08/2003 $300,000

Title Documents for 9921 4th Avenue #5F, Brooklyn

To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.

Date Type Amount Party 1 Party 2 Doc image
02/03/2005 - R
07/30/2004 - D
Amended Declaration
(2004111900782001)
11/18/2003 - R
09/03/2003 - D
Satisfaction of Mortgage
(2003091500907001)
09/29/2003 - R
08/08/2003 - D
Deed
(2003081800201003)
09/29/2003 - R
07/17/2003 - D
Power of Attorney
(2003081800201001)
09/29/2003 - R
07/11/2003 - D
Power of Attorney
(2003081800201002)
09/30/1996 - R Assignment, Mortgage
(3240005365824)
02/01/1995 - R Sundry Agreement
(3910004615591)
11/19/1987 - R Mortgage
(3640001316964)
11/19/1987 - R Power of Attorney
(3650001316965)
11/19/1987 - R
09/15/1987 - D
Deed
(3630001316963)
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R: Recorded date
D: Document date

Property Taxes for 9921 4th Avenue #5F, Brooklyn

Access detailed property tax data for The Harbour At Bayridge - 9921 4th Avenue #5F, Brooklyn, NY 11209. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year: 2026-2027
Property tax: $1,812
Tax assessor's market value: $128,189
Assessed value: $57,685
Exemptions granted by city:

Assessment History for 9921 4th Avenue #5F, Brooklyn

Here's the assessment & property tax history for 9921 4th Avenue #5F, Brooklyn, including the evolution of the total tax rate and corresponding property tax.

Year Market value Assessed value Taxable Tax rate % Base tax Property tax Year over year change
2025/26 $112,157 $50,471 $18,675 12.439% $6,278 $1,618 -12.23%
2024/25 $124,198 $55,889 $20,849 12.5% $6,717 $1,844 +2.33%
2023/24 $118,122 $53,155 $20,287 12.502% $6,645 $1,802 -31.33%
2022/23 $124,929 $56,218 $21,392 12.267% $6,711 $2,624 +7.50%
2021/22 $114,463 $51,508 $19,954 12.235% $6,302 $2,441 -3.10%

Permits for 9921 4th Avenue #5F, Brooklyn

The complete history of permits filed for 9921 4th Avenue #5F, Brooklyn, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

No recorded permits for this property.

Bay Ridge Residential Market Stats

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

Median Sale Price
$460,000
-7.1% YoY
Median Price/Sqft
$816
7.8% YoY
Brooklyn Median Sale Price
$885,000
2.5% YoY

Check out recently sold homes in Brooklyn and see how their prices compare.

Transportation

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

Schools

Nearest elementary schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
St Patrick School NR No Private PK-8 167 0.16
St Patrick School NR No Private PK-8 167 0.16
Poly Prep Country Day School NR No Private PK-12 1,060 0.41
Poly Prep Country Day School NR No Private PK-12 1,060 0.41
P.S. Is 104 The Fort Hamilton School 7 No Public K-8 1,103 0.42

Nearest middle schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
St Patrick School NR No Private PK-8 167 0.16
Poly Prep Country Day School NR No Private PK-12 1,060 0.41
P.S. Is 104 The Fort Hamilton School 7 No Public K-8 1,103 0.42
Visitation Academy NR No Private PK-8 114 0.60
Adelphi Academy NR No Private PK, K-12 0 0.79

Nearest high schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
Fontbonne Hall Academy NR No Private 9-12 439 0.19
Poly Prep Country Day School NR No Private PK-12 1,060 0.41
Adelphi Academy NR No Private PK, K-12 0 0.79
Fort Hamilton High School 4 No Public 9-12 3,925 1.04
Bay Ridge Preparatory School NR No Private K-12 375 1.32

Data provided by GreatSchools.org © 2025. All rights reserved.

Neighbors for 9921 4th Avenue #5F, Brooklyn

Here are the neighbors for The Harbour At Bayridge - 9921 4th Avenue #5F, Brooklyn, NY 11209.

Address Square feet Purchase date Purchase price
1511 E 9th St, Brooklyn 3,900 05/02/2013 $1,060,000
296 Cook St, Brooklyn 12/01/2010 $1,800,000
28 A Hart St, Brooklyn 2,646 09/19/2024
675 E 83rd St, Brooklyn 2,968 01/02/2025
35 Gaylord Dr N, Brooklyn 4,240 02/01/2001
443 Wortman Ave, Brooklyn 2,295 02/15/2018 $700,000
890 E 34th St, Brooklyn 2,502 04/17/2025 $715,000
199 Leonard St, Brooklyn 1,152 04/12/2010 $635,000
1024 E 94th St, Brooklyn 1,152 03/28/2007 $440,000
23 Dewey Pl, Brooklyn 2,080 03/06/2009
2311 A Pacific St, Brooklyn 1,960 01/06/2021 $700,350
450 Union St, Brooklyn 213,934 12/31/2024
17 Division Pl, Brooklyn 1,660 04/27/2022 $1,740,000
1767 W 8th St, Brooklyn 1,504 05/20/2019
623 Gates Ave, Brooklyn 2,150 01/06/2006 $600,000
8816 Ditmas Ave, Brooklyn 6,000 03/25/2003
632 Parkside Ave, Brooklyn 9,000 06/27/2017
15 Metrotech Ctr, Brooklyn 691,645 11/08/2006
467 Belmont Ave, Brooklyn 3,273 08/23/2011 $176,000
1309 E 64th St, Brooklyn 1,372 10/26/2016 $445,000
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