New York City property record for 421 Grove St, Brooklyn, NY 11237
| Property Type | Triplex |
|---|---|
| Details | 2,700 sqft · built 1920 |
| Lot Size | 0.046 acres (2,000 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $1,310 (2025) |
| Deeds & Mortgages | Oct 2021 Transfer |
| APN | 03320-0040 |
| Primary APN | 03320-0040 |
|---|---|
| Alternative APNs |
|
| Units | 3 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 2,700 sqft Living Area |
| 1st Floor Area | 900 sqft |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | Triplex |
| Lot Area | 2,000 sqft (0.046 acres) |
| Lot Dimensions | 100 ft deep x 20 ft wide |
| Account Number | 3-03320-0040 |
|---|---|
| Street Address | 421 GROVE ST |
| City | BROOKLYN |
| State | NY |
| Zip | 11237-5506 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Triplex |
| Local Zoning Code | R6 |
| Legal Block | 3320 |
| Legal Lot Number | 40 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 44100 |
421 Grove St, a triplex, is owned and occupied by two individuals who acquired it in September 2021.
Source: New York City records, as of May 4, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 421 GROVE ST, BROOKLYN, NY 11237-5506 |
| 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 | 2 Names on Deed |
|---|---|
| Last Transfer Date | Sep 20, 2021 |
| Transfer Doc | 0000407280 |
| Record Updated | Jun 8, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Recording Date | Oct 15, 2021 |
| Property Address | 421 GROVE ST, BROOKLYN, NY 11237-5506 |
| Document Number | 0000407280 |
| Instrument Date | Sep 20, 2021 |
| Instrument | 2021000407280 |
| Transaction Type | Transfer |
| Record Updated | Oct 26, 2021 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 421 GROVE ST, 421, BROOKLYN, NY 11237-5506 |
| Name | Verified Name |
|---|---|
| Address | 421 GROVE ST, BROOKLYN, NY 11237-5506 |
The 2025 property tax bill for 421 Grove St was $1,310.
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 | $73,980 Land $13,260 Building $60,720 | $1,233,000 Land $221,000 Building $1,012,000 | |
| 2025 | $1,310.00 | ||
| 2023 | $1,229.00 | $76,380 Land $13,260 Building $63,120 | $1,273,000 Land $221,000 Building $1,052,000 |
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 421 Grove St.
Source: FEMA National Flood Hazard Layer
| FEMA Flood Zone | Not on file |
|---|
Values are read at the parcel center point; lenders make the official flood determination.
The area around 421 Grove 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 1,905 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| Spectrum Cable | 1,000 / 1,000 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Starry.
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