---
title: "9921 4th Avenue #3B, New York City, NY 11209"
description: "9921 4th Avenue #3B, New York City, NY 11209 — Bay Ridge, New York City, NY. Listing Price $525,000. 1 bed, 1 bath, 826 sqft Illustrative Buyer Commission Share of $7,875 at closing, based on a 3% buyer-broker commission."
url: "https://realestaterebatesnewyork.com/buy/newyorkcity/brooklyn/11209/9921-4th-avenue-3b-ny-11209"
source: "Real Estate Rebate Team"
status: "Active"
---

# 9921 4th Avenue #3B, New York City, NY 11209

Bay Ridge, New York City, NY

Courtesy of Corcoran Group

## At a Glance

- **Listing Price**: $525,000
- **Beds**: 1
- **Baths**: 1
- **Sqft**: 826
- **Common Charges**: $685 / mo
- **Monthly Taxes**: $401 / mo
- **Price per Sqft**: $636
- **Brokerage Fee**: Share Eligible

## The Private Brokerage Advantage

As an independent luxury buyer representative, Régis shares 50% of the buyer-side commission he actually receives on your purchase. Eligible buyers receive that Buyer Commission Share directly at closing to offset closing costs, down payments, or renovations. The figures below are illustrative, based on a **3% buyer-broker commission**; your share follows the commission offered on the transaction.

- **Contract Purchase Price**: $525,000
- **Illustrative Buyer Commission Share**: -$7,875*
- **Illustrative Net Cost**: $517,125

*Illustrative Buyer Savings of $7,875 — 50% of a 3% buyer-broker commission, shared at closing.*

[Request a private tour](https://realestaterebatesnewyork.com/contact) · [Estimate your Buyer Commission Share](https://realestaterebatesnewyork.com/calculators/buyer-closing-cost-calculator)

## Photos (6)

![9921 4th Avenue #3B, New York City, NY 11209 — photo 1 of 6](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/0b52cb8d-a085-42eb-9d8c-efebb0f33a55.jpg)
![9921 4th Avenue #3B, New York City, NY 11209 — photo 2 of 6](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/d37420ed-a8d2-4de5-ab73-7dbf729be3dd.jpg)
![9921 4th Avenue #3B, New York City, NY 11209 — photo 3 of 6](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/43a44275-22e7-4912-abb4-559b029a5161.jpg)
![9921 4th Avenue #3B, New York City, NY 11209 — photo 4 of 6](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/e2b9840f-edac-4ef0-aa90-ed39b7a229e3.jpg)
![9921 4th Avenue #3B, New York City, NY 11209 — photo 5 of 6](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/00a41ac4-a350-44f1-a3fc-6b098816bcd9.jpg)
![9921 4th Avenue #3B, New York City, NY 11209 — photo 6 of 6](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/f53d7fe7-75ba-461e-badf-0607ed5a7358.jpg)

## Property Overview

Welcome to 9921 4th Avenue, Unit 3B, a sunfilled one-bedroom condo in a pet friendly, elevator, doorman building in Bay Ridge!

This bright and airy 3rd floor unit features a wall of oversized west-facing windows that fill the space with natural light throughout the day and stunning sunsets in the evening. The living/dining room is open and spacious with room for a formal dining room table and plenty of space for a home entertainment area and home office.

The kitchen features stainless steel appliances with plenty of cabinets and counter space and features an island with additional storage and barstool seating.

The spacious bedroom easily accommodates a king-size bed and has custom closets. A full bathroom with tub complete the unit.

Additional features include concrete subfloors to reduce noise, high ceilings, abundant storage and closet space.

This pet friendly, 24-hour doorman building includes an elevator, on-site laundry, private storage, a gym, and a spacious outdoor patio with built-in BBQ grills and bridge views perfect for entertaining.

The option to rent out the unit as an investment property provides added flexibility.

Ideally located near the subway, express bus, Shore Road Promenade, waterfront parks, dog runs, tennis and pickleball courts, and numerous shops and restaurants, this apartment is a must see! Call today to schedule your showing.

## Property Details

- **Property Type**: Condominium
- **Beds**: 1
- **Baths**: 1
- **Rooms**: 3
- **Sqft**: 826 sqft
- **Stories**: 6
- **Year Built**: 1987
- **Price per Sqft**: $636
- **Common Charges**: $685 / Monthly
- **Monthly Taxes**: $401 / mo
- **Listed On**: Jul 23, 2026
- **Days on Market**: 45 Days

### Residence Features

- Wall Unit(s)
- Wall Furnace
- Common On Floor
- Common Area
- Kitchen Island
- Cooktop
- Dishwasher
- Gas Cooktop
- Gas Oven
- Range
- Refrigerator
- Security Guard
- Window Treatments
- City

## Sales Evidence

### Recent closed sales

6 apartments at 9921 4th Avenue have recorded sales since September 2021, the most recent for $720,000 in June 2025. Prices are the figures recorded with the City, not asking prices.

| Unit | Beds | Sq Ft | Sold Price | $/ft² | Sold | Source |
| --- | --- | --- | --- | --- | --- | --- |
| 2I (Apartment) | — | 919 | $720,000 | $783/ft² | June 30, 2025 | City record |
| 3C (Apartment) | — | 919 | $750,000 | $816/ft² | July 27, 2023 | City record |
| 2I (Apartment) | — | 919 | $590,000 | $642/ft² | September 8, 2022 | City record |
| 6A (Apartment) | — | 1,003 | $600,000 | $598/ft² | July 25, 2022 | City record |
| 5I (Apartment) | 2 | 919 | $765,000 | $832/ft² | June 21, 2022 | City record · MLS |
| 5-I (Apartment) | 2 | 900 | $525,000 | $583/ft² | January 5, 2022 | MLS |

Every row is a recorded transaction, including ancillary spaces such as storage and staff rooms where they were sold separately. Those are excluded from the benchmark below.

Sale prices are the consideration recorded with the City in ACRIS, and each sale is dated by the day the City recorded it. A closing date reported to the MLS typically falls one to two weeks earlier. Recorded sales describe what has already happened and are not an appraisal, a valuation, or an estimate of what this home will sell for.

[See every recorded sale at 9921 4th Avenue](https://realestaterebatesnewyork.com/buildings/new-york-city/brooklyn/9921-4th-avenue)

## Price and Property History for 9921 4th Avenue, Unit 3B

Review the recorded listing activity for 9921 4th Avenue, Unit 3B, including asking-price changes and prior market dates.

- **Latest price change**: Reduced by $25,000, or 4.5%, on August 15, 2026
- **Originally listed**: January 27, 2026 at $550,000
- **Current asking price**: $525,000

| Date | Price | Listing event |
| --- | --- | --- |
| August 15, 2026 | $525,000 | Asking price reduced by $25,000, or 4.5% |
| January 27, 2026 | $550,000 | Listed for sale by Corcoran Group |

## Property Tax History

Taxes at 9921 4th Avenue #3B were $4,835 in 2026, up 6.2% from 2025.

| Year | Tax Assessment | Land | Additions | Billable Value | Property Tax | Tax Rate |
| --- | --- | --- | --- | --- | --- | --- |
| 2026 (FY 2026/27) | $41,643 | $3,118 | $38,525 | $38,680 | $4,835 | 12.5% (estimated) |
| 2025 (FY 2025/26) | $36,435 | $3,118 | $33,317 | $36,435 | $4,554 | 12.5% (estimated) |
| 2024 (FY 2024/25) | $40,347 | $3,118 | $37,229 | $38,795 | $4,849 | 12.5% |
| 2023 (FY 2023/24) | $38,373 | $3,118 | $35,255 | $38,373 | $4,797 | 12.502% |
| 2022 (FY 2022/23) | $40,585 | $3,118 | $37,467 | $39,491 | $4,844 | 12.267% |
| 2021 (FY 2021/22) | $37,184 | $3,118 | $34,066 | $37,184 | $4,549 | 12.235% |
| 2020 (FY 2020/21) | $41,471 | $3,118 | $38,353 | $37,675 | $4,622 | 12.267% |
| 2019 (FY 2019/20) | $38,633 | $3,118 | $35,515 | $34,506 | $4,304 | 12.473% |
| 2018 (FY 2018/19) | $39,591 | $3,118 | $36,473 | $31,453 | $3,967 | 12.612% |
| 2017 (FY 2017/18) | $36,327 | $3,118 | $33,209 | $27,984 | $3,559 | 12.719% |
| 2016 (FY 2016/17) | $32,365 | $3,118 | $29,247 | $24,967 | $3,219 | 12.892% |
| 2015 (FY 2015/16) | $27,740 | $3,118 | $24,622 | $22,943 | $2,956 | 12.883% |
| 2014 (FY 2014/15) | $24,320 | $3,118 | $21,202 | $20,880 | $2,684 | 12.855% |
| 2013 (FY 2013/14) | $22,245 | $3,118 | $19,127 | $19,809 | $2,604 | 13.145% |
| 2012 (FY 2012/13) | $21,251 | $3,118 | $18,133 | $19,150 | $2,524 | 13.181% |
| 2011 (FY 2011/12) | $19,175 | $3,430 | $15,745 | $18,821 | $2,528 | 13.433% |
| 2010 (FY 2010/11) | $17,432 | $3,118 | $14,314 | $18,992 | $2,536 | 13.353% |

The City has not published the official FY2026/27 and FY2025/26 tax rates yet. We calculated the tax for those years using the prior year’s rate, so treat them as an estimate rather than a figure the City has adopted. Every rate without the Estimated marker is the published one.

Tax Assessment is the assessed value on the City’s roll, and it is the figure other listing sites publish. It is not what the bill is calculated on. New York phases assessment changes in gradually for some tax classes, so the City bills the Billable Value shown beside it, less any exemption the owner holds. It usually trails the assessment, and it can sit above it for a few years after an assessment falls.

Figures are the New York City Department of Finance assessment roll for tax lot 3061351018. Assessed and billable values are determined by the City for tax purposes and are not an appraisal or an estimate of market value. Tax classes and rates are set annually and can change.

[How we source and calculate NYC property tax data](https://realestaterebatesnewyork.com/nyc-property-tax-data-methodology)

## About The Building

### 9921 4th Avenue

9921 4th Avenue, Brooklyn, NY 11209

A building in the neighborhood, currently featuring 1 active listing.

- **Year Built**: 1987
- **Total Units**: 1
- **Floors**: 6

[View the building page](https://realestaterebatesnewyork.com/buildings/new-york-city/brooklyn/9921-4th-avenue)

### Available Residences — For Sale (1)

| Unit | Beds | Baths | Size | Price / Ft² | Price | Listing Office | Listed Date | Days on Market |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [3B](https://realestaterebatesnewyork.com/buy/newyorkcity/brooklyn/11209/9921-4th-avenue-3b-ny-11209) | 1 | 1 | 826 sqft | $636 | $525,000 (-4.5%) | Corcoran Group | Jul 23, 2026 | 45 days |

## Estimated Monthly Payment

**$3,741 / month**, assuming a 20% down payment ($105,000), a 6.5% interest rate and a 30-year term. The page's calculator lets a buyer change all three.

- **Principal & Interest**: $2,655
- **Property Taxes**: $401
- **Common Charges**: $685

Estimates only. Actual payments may vary. Confirm terms with your lender.

## Bay Ridge

Overview of Bay Ridge

[Explore Bay Ridge](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/bay-ridge) · [All Neighborhoods](https://realestaterebatesnewyork.com/neighborhoods)

### Nearby Bay Ridge

- [Dyker Heights real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/dyker-heights)
- [Fort Hamilton real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/fort-hamilton)
- [Sunset Park real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/sunset-park)
- [Borough Park real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/borough-park)
- [Bensonhurst real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/bensonhurst)
- [Bath Beach real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/bath-beach)

## Related Links

- [9921 4th Avenue — building page](https://realestaterebatesnewyork.com/buildings/new-york-city/brooklyn/9921-4th-avenue)
- [Bay Ridge neighborhood guide](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/brooklyn/bay-ridge)
- [Estimate your Buyer Commission Share and closing costs](https://realestaterebatesnewyork.com/calculators/buyer-closing-cost-calculator)
- [Contact Régis Roumila](https://realestaterebatesnewyork.com/contact)

---

> RLS IDX Data display by Real Estate Rebate Team. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., All rights reserved. IDX information is provided exclusively for consumers’ personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

> All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and the number of bedrooms listed is for informational purposes and is not a legal conclusion. Please consult with your own architect or engineer for exact dimensions and legal specifications.