New York City property record for 21 4th St, Brooklyn, NY 11231
| Property Type | Duplex |
|---|---|
| Details | 1,568 sqft · built 1899 |
| Lot Size | 0.041 acres (1,800 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $2,514 (2025) |
| Deeds & Mortgages | Jan 2019 Transfer |
| APN | 00464-0059 |
| Primary APN | 00464-0059 |
|---|---|
| Alternative APNs |
|
| Units | 2 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 1,568 sqft Living Area |
| 1st Floor Area | 760 sqft |
| Year Built | Built 1899 |
|---|---|
| Effective Year Built | Effective 1899 |
| Architectural Style | Duplex Single |
| Construction Type | Brick |
| Lot Area | 1,800 sqft (0.041 acres) |
| Lot Dimensions | 90 ft deep x 20 ft wide |
| Account Number | 3-00464-0059 |
|---|---|
| Street Address | 21 4TH ST |
| City | BROOKLYN |
| State | NY |
| Zip | 11231-4510 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R6B |
| Legal Block | 464 |
| Legal Lot Number | 59 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 7700 |
21 4th St, a duplex, is owned and occupied by an individual who acquired it in January 2019.
Source: New York City records, as of May 4, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 21 4TH ST, BROOKLYN, NY 11231-4510 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Individual(s) |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 9, 2019 |
| Deed Sale | Jan 9, 2019 |
| Deed Document Number | 20199101 |
| Prior Transfer Date | Nov 19, 2018 |
| Prior Transfer Doc | 0000009101 |
| Record Updated | Jun 8, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Recording Date | Jan 9, 2019 |
| Property Address | 21 4TH ST, BROOKLYN, NY 11231-4510 |
| Document Number | 0000009101 |
| Instrument Date | Nov 19, 2018 |
| Instrument | 9101 |
| Transaction Type | Transfer |
| Record Updated | Jan 21, 2019 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 21 4TH ST BROOKLYN NY 112314510, BROOKLYN, NY 11231-4510 |
The 2025 property tax bill for 21 4th St was $2,514 with a senior citizen's exemption.
Source: New York City assessment roll, as of May 4, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Kings County |
| Municipality | New York City |
| Unified School District | New York City Department Of Education (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $149,520 Land $26,880 Building $122,640 | $2,492,000 Land $448,000 Building $2,044,000 | |
| 2025 | $2,514.00 | ||
| 2023 | $2,245.00 Homeowner's exemption Senior Citizen's exemption | $136,920 Land $26,880 Building $110,040 | $2,282,000 Land $448,000 Building $1,834,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA has no flood map on file for 21 4th St; there have been 6 flood claims nearby since 2012.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Flood Insurance Cost | Premium on File median of 11 policies |
| Nearby Flood Policies | 11 in force |
| Nearby Flood Claims | 6 (2012–2021) |
| Claims Outside the SFHA | 3 of 6 |
| Most Recent Claim | Aug 2021 · other causes |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
The area around 21 4th St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | NEW YORK CITY SYSTEM serves 8,271,000 people · EPA ID NY7003493 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2025 |
| Lead | 10 ppb (2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Uncovered finished water reservoir currently in violation since Feb 2017 |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 1,577 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Starry Fixed Wireless | 300 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Optimum.
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