New York City property record for 421 Ave M, Brooklyn, NY 11230 · Last verified May 2026
| Property Type | Duplex |
|---|---|
| Details | 1,748 sqft · built 1915 |
| Lot Size | 0.056 acres (2,450 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $9,962 (2025) |
| Deeds & Mortgages | Aug 2023 Sale |
| APN | 06540-0045 |
| Primary APN | 06540-0045 |
|---|---|
| Alternative APNs |
|
| Units | 2 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 1,748 sqft Living Area |
| 1st Floor Area | 756 sqft |
| Year Built | Built 1915 |
|---|---|
| Effective Year Built | Effective 1915 |
| Architectural Style | Duplex Single |
| Lot Area | 2,450 sqft (0.056 acres) |
| Lot Dimensions | 98 ft deep x 25 ft wide |
| Account Number | 3-06540-0045 |
|---|---|
| Street Address | 421 AVENUE M |
| City | BROOKLYN |
| State | NY |
| Zip | 11230-4611 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Block | 6540 |
| Legal Lot Number | 45 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 44800 |
Source: New York City records · APN 06540-0045
Assessment roll updated May 4, 2026 · Last verified May 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 421 AVENUE M, BROOKLYN, NY 11230-4611 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Aug 23, 2023 |
| Deed Sale | Aug 23, 2023 |
| Prior Sale | Apr 08, 1999 · Amount on Record |
| Deed Document Number | 2023214639 |
| Prior Transfer Date | Aug 16, 2023 |
| Prior Transfer Doc | 0000214639 |
| Record Updated | Jun 08, 2026 |
| Document Type | Deed |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Recording Date | Aug 23, 2023 |
| Property Address | 421 AVENUE M, BROOKLYN, NY 11230-4611 |
| Document Number | 0000214639 |
| Instrument Date | Aug 16, 2023 |
| Instrument | 2023000214639 |
| Transaction Type | Transfer |
| Record Updated | Aug 29, 2023 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 421 AVENUE M, BROOKLYN, NY 11230-4611 |
| Name | Verified Name |
|---|---|
| Address | 421 AVENUE M, BROOKLYN, NY 11230-4611 |
Source: New York City records · Assessment roll updated May 4, 2026 · Last verified May 2026
| Type | Name |
|---|---|
| State | New York |
| County | Kings County |
| Municipality | New York City |
| Unified School District | New York City Department Of Education (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $89,580 (+10.35%) Land $27,780 Building $61,800 | $1,493,000 (+10.35%) Land $463,000 Building $1,030,000 | |
| 2025 | $9,962.00 (+12.3%) | ||
| 2023 | $8,871.00 (+5.17%) | $81,180 (+2.04%) Land $27,780 Building $53,400 | $1,353,000 (+2.04%) Land $463,000 Building $890,000 |
| 2022 | $8,435.00 | $79,560 Land $27,780 Building $51,780 | $1,326,000 Land $463,000 Building $863,000 |
Source: FEMA National Flood Hazard Layer · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Not on file |
|---|
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Source: NPS National Register of Historic Places · August 1, 2026 release · Last verified October 2026
| Listed Area | Within Ocean Parkway listed 1983 · 1 contributing resources · NRIS 83001697 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 997 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Optimum Communications | Fiber | 8,000 / 8,000 |
| Verizon | Fiber | 2,300 / 2,300 |
| Optimum Communications | Cable | 940 / 35 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
May also be available at this address: Verizon, Xchange Telecom, Starry. Availability varies by address; speeds are provider-advertised maximums, not measured.
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