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9921 4th Avenue #P4, Brooklyn, NY 11209 Property Information

9921 4th Avenue #P4, Brooklyn, NY 11209 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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9921 4th Avenue #P4, Brooklyn, NY 11209 1
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Address

Building name The Harbour At Bayridge
Primary address 9921 4th Avenue #P4
Secondary address 401-411 100th St
Neighborhood Bay Ridge
Zip code 11209
Borough Brooklyn
Block & lot 06135-1004

Sales & Tax Overview for 9921 4th Avenue #P4, Brooklyn

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

Purchase date 09/06/2017
Purchase price $925,000
Tax class
Estimated property tax $21,283

Lot & Building Information for 9921 4th Avenue #P4, Brooklyn

Lot sq. ft. 21,937
Lot dimensions 195 ft x 113 ft
Property type Office Space (RB)
Building sqft 1,896
Buildings on lot 1
Year built 1985
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Zoning & Use for 9921 4th Avenue #P4, Brooklyn

Commercial units 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 # P4
Square feet 1,896
Condo complex 300118

Other Property Data for 9921 4th Avenue #P4, Brooklyn

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Floor area ratio (FAR) for 9921 4th Avenue #P4, 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 #P4, 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 #P4, Brooklyn

How many sq. ft. does 9921 4th Avenue #P4, Brooklyn, NY 11209 have & what is the price per sq. ft?

This Office Space (RB) located at 9921 4th Avenue #P4, Brooklyn, NY 11209 has a total of 1,896 square feet and a current price per square foot of $487.

What is the year built & the current market value of 9921 4th Avenue #P4, Brooklyn, NY 11209?

9921 4th Avenue #P4, Brooklyn, NY 11209 was built in 1985 and has a current tax assessor's market value of $446,702.

How many commercial spaces does this building have?

This building has 1 commercial spaces available for lease.

Ownership Information for 9921 4th Avenue #P4, Brooklyn

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Property owner name for 9921 4th Avenue #P4, Brooklyn, NY 11209
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Building contacts for 9921 4th Avenue #P4, Brooklyn, NY 11209
Building management:
Representatives (from permits):
Tenants:
Real Estate Reports:
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Past Sales & Property History for 9921 4th Avenue #P4, Brooklyn

Create a free account to view the complete sales history for 9921 4th Avenue #P4, Brooklyn, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.

Purchase date Purchase price Buyer name Seller name
09/06/2017 $925,000

Title Documents for 9921 4th Avenue #P4, 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
09/06/2017 - D
09/14/2017 - R
Deed
(2017091200985001)
07/30/2004 - D
02/03/2005 - R
Amended Declaration
(2004111900782001)
02/07/1997 - R UCC3 Termination
(3960005488396)
07/19/1996 - D
08/21/1996 - R
Deed
(3850005301485)
03/25/1994 - R Initial UCC1
(3580004242358)
10/05/1992 - R Mortgage
(3110001719211)
10/05/1992 - R Agreement
(3120001719212)
05/05/1988 - R Uniform Commercial Code 1
(3510001846551)
04/15/1988 - R Mortgage
(3560001359356)
10/19/1987 - R Mortgage
(3360001309136)
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R: Recorded date
D: Document date

Property Taxes for 9921 4th Avenue #P4, Brooklyn

Access detailed property tax data for The Harbour At Bayridge - 9921 4th Avenue #P4, Brooklyn, NY 11209. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year: 2025-2026
Property tax: $19,617
Estimated property tax: $21,283
Tax assessor's market value: $446,702
Assessed value: $201,016

Assessment History for 9921 4th Avenue #P4, Brooklyn

Here's the assessment & property tax history for 9921 4th Avenue #P4, 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 $446,702 $201,016 $180,832 10.848% $19,617 $19,617 +2.11%
2024/25 $440,905 $198,408 $178,510 10.762% $19,211 $19,211 +4.94%
2023/24 $415,476 $186,965 $172,839 10.592% $18,307 $18,307 -0.61%
2022/23 $429,873 $193,443 $173,011 10.646% $18,419 $18,419 +19.52%
2021/22 $318,431 $143,294 $143,294 10.755% $15,411 $15,411 -13.87%

Permits for 9921 4th Avenue #P4, Brooklyn

The complete history of permits filed for 9921 4th Avenue #P4, 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.

Brooklyn Commercial Market Stats

Access a detailed real estate market overview of Brooklyn so you can assess current trends, property values, types of properties sold and transaction volume. View the median price per sqft in Brooklyn and compare it to other boroughs in New York City.

Median Price/Sqft Q1/2026
$444
-15% YoY
Median Price/Sqft Q4/2025
$523
9.6% YoY
Median Price/Sqft 2025
$523
5.9% 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
Bus Routes
Name 4 Av/100 St
Line B63
Distance (miles) 0.019

Neighbors for 9921 4th Avenue #P4, Brooklyn

Here are the neighbors for The Harbour At Bayridge - 9921 4th Avenue #P4, Brooklyn, NY 11209.

Address Square feet Purchase date Purchase price
123 A 2nd Pl, Brooklyn 3,072 03/26/2025
643 Vanderbilt Ave, Brooklyn 3,135 11/11/2011
297 Van Brunt St, Brooklyn 01/08/2014 $150,000
164 A Lefferts Pl, Brooklyn 09/21/2015 $975,000
32 Grafton St, Brooklyn 29,400 11/17/2023
155 Crystal St, Brooklyn 2,576 07/10/2013 $465,000
200 E 39th St, Brooklyn 2,074 09/02/2020
25 Tapscott St, Brooklyn 51,591 05/20/1988
2042 W 5th St, Brooklyn 2,640 02/10/2022 $1,380,000
37 Tapscott St, Brooklyn 05/20/1988
488 A 17th St, Brooklyn 1,120 03/19/2003 $332,500
1355 Rogers Ave, Brooklyn 92,144 11/20/2013 $3,100,000
2002 Haring St, Brooklyn 1,980 03/27/2026
111 Bay 46 St, Brooklyn 03/01/1996
103 Liberty Ave, Brooklyn 47,602 06/30/2021
4212 Fillmore Ave, Brooklyn 1,600 08/04/2005
3072 Cropsey Ave, Brooklyn 1,560 03/26/1991
1853 Bay Ridge Ave, Brooklyn 2,026 09/13/2004 $705,000
476 Pulaski St, Brooklyn 10,295 04/11/2005 $3,450,000
1473 50th St, Brooklyn 14,132 03/02/2017 $2,500,000
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