9921 4th Avenue #3B, New York City, NY 11209
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NYDOS LIC#: 10491211335
Property Overview
Property Details
Residence Features
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Sales and market data
Recent 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.
| 2IApartment | Bedroom count not recorded | 919 | $720,000 | $783/ft² | June 30, 2025City record |
|---|---|---|---|---|---|
| 3CApartment | Bedroom count not recorded | 919 | $750,000 | $816/ft² | July 27, 2023City record |
| 2IApartment | Bedroom count not recorded | 919 | $590,000 | $642/ft² | September 8, 2022City record |
| 6AApartment | Bedroom count not recorded | 1,003 | $600,000 | $598/ft² | July 25, 2022City record |
| 5IApartment | 2 | 919 | $765,000 | $832/ft² | June 21, 2022City record · MLS |
| 5-IApartment | 2 | 900 | $525,000 | $583/ft² | January 5, 2022MLS |
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.
Sales data through June 2025.
Sale prices and dates are based on NYC ACRIS records. MLS closing dates may differ. Historical sales are not an appraisal or valuation of this property.
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
- Entered contract
- September 11, 2026
| Date | Price | Listing event |
|---|---|---|
| $525,000 | Entered contract | |
| $525,000 | Asking price reduced by $25,000, or 4.5% | |
| $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 |
|---|---|---|---|---|---|---|
| 2026FY 2026/27 | $41,643 | $3,118 | $38,525 | $38,680 | $4,835 | 12.5%Estimated |
| 2025FY 2025/26 | $36,435 | $3,118 | $33,317 | $36,435 | $4,554 | 12.5%Estimated |
| 2024FY 2024/25 | $40,347 | $3,118 | $37,229 | $38,795 | $4,849 | 12.5% |
| 2023FY 2023/24 | $38,373 | $3,118 | $35,255 | $38,373 | $4,797 | 12.502% |
| 2022FY 2022/23 | $40,585 | $3,118 | $37,467 | $39,491 | $4,844 | 12.267% |
| 2021FY 2021/22 | $37,184 | $3,118 | $34,066 | $37,184 | $4,549 | 12.235% |
| 2020FY 2020/21 | $41,471 | $3,118 | $38,353 | $37,675 | $4,622 | 12.267% |
| 2019FY 2019/20 | $38,633 | $3,118 | $35,515 | $34,506 | $4,304 | 12.473% |
| 2018FY 2018/19 | $39,591 | $3,118 | $36,473 | $31,453 | $3,967 | 12.612% |
| 2017FY 2017/18 | $36,327 | $3,118 | $33,209 | $27,984 | $3,559 | 12.719% |
| 2016FY 2016/17 | $32,365 | $3,118 | $29,247 | $24,967 | $3,219 | 12.892% |
| 2015FY 2015/16 | $27,740 | $3,118 | $24,622 | $22,943 | $2,956 | 12.883% |
| 2014FY 2014/15 | $24,320 | $3,118 | $21,202 | $20,880 | $2,684 | 12.855% |
| 2013FY 2013/14 | $22,245 | $3,118 | $19,127 | $19,809 | $2,604 | 13.145% |
| 2012FY 2012/13 | $21,251 | $3,118 | $18,133 | $19,150 | $2,524 | 13.181% |
| 2011FY 2011/12 | $19,175 | $3,430 | $15,745 | $18,821 | $2,528 | 13.433% |
| 2010FY 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.
About The Building
9921 4th Avenue
9921 4th Avenue, Brooklyn, NY 11209
A building in the neighborhood, currently featuring 0 active listings.
Interested in 9921 4th Avenue?
Consult Régis for private buyer guidance, off-market opportunities, building financials, board package requirements, closing costs, and potential Buyer Savings.
Available Residences
| 3B | 1 | 1 | 826 sqft | $636 | $525,000(-4.5%) In contract | Jul 23, 2026 | 55 days |
In the Neighborhood
Nearby Schools
* Distances are approximate line-of-sight metrics.
Map
Bay Ridge
Overview of Bay Ridge
Bay Ridge is the small-town end of the line. Located at the southwestern tip of Brooklyn, it is a waterfront community known for its strong schools, stunning bridge views, and "Saturday Night Fever" history. For buyers seeking Bay Ridge Brooklyn real estate, it offers single-family homes and a quiet, suburban pace of life. Living in Bay Ridge is traditional. The "Gold Coast" shore road is lined with mansions. As a stable Brooklyn NYC neighborhood, it attracts families who want to put down deep roots.Real Estate & Housing Market
The market for homes for sale in Bay Ridge includes detached Tudors, colonials, and pre-war co-ops. It is one of the few places in Brooklyn where you can easily find a driveway and a garage. Prices are moderate compared to the Brownstone belt, offering more square footage for the dollar.Lifestyle & Community
The lifestyle in Bay Ridge revolves around 3rd Avenue's restaurants and bars. The neighborhood has a vibrant nightlife and dining scene that feels self-contained. The community is a mix of old-school Italian/Irish families and a large, vibrant Middle Eastern community.Transportation & Accessibility
Bay Ridge is served by the R train. It is a long ride to Manhattan (45+ mins). However, the X27/X37 express buses are a popular secret, whisking commuters to Midtown via the highway. The NYC Ferry also offers a scenic route to Wall Street.Parks, Schools & Amenities
Shore Road Park stretches for miles along the waterfront, offering bike paths and views of the Verrazzano-Narrows Bridge. Amenities are classic: great diners, bakeries, and community parades. It feels very established.Who This Neighborhood Is Best For
Bay Ridge is best for families, retirees, and buyers who prioritize space, safety, and waterfront walks over a short commute.
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.