New York City property record for 439 E 51st St, Brooklyn, NY 11203
| Property Type | Duplex |
|---|---|
| Details | 1,300 sqft · built 1910 |
| Lot Size | 0.046 acres (2,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $350,000 (Feb 2009) |
| Tax Bill | $5,749 (2025) |
| Deeds & Mortgages | Sep 2023 Mortgage |
| APN | 04699-0051 |
| Primary APN | 04699-0051 |
|---|---|
| Alternative APNs |
|
| Units | 2 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 1,300 sqft Living Area |
| 1st Floor Area | 650 sqft |
| Year Built | Built 1910 |
|---|---|
| Effective Year Built | Effective 1910 |
| Architectural Style | Duplex Single |
| Lot Area | 2,000 sqft (0.046 acres) |
| Lot Dimensions | 100 ft deep x 20 ft wide |
| Account Number | 3-04699-0051 |
|---|---|
| Street Address | 439 E 51ST ST |
| City | BROOKLYN |
| State | NY |
| Zip | 11203-4401 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R5 |
| Legal Block | 4699 |
| Legal Lot Number | 51 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 86200 |
Source: New York City assessment roll, as of May 4, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 439 E 51ST ST, BROOKLYN, NY 11203-4401 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Feb 26, 2009 · Amount on Record |
| Deed Sale | Feb 26, 2009 · Amount on Record |
| Prior Sale | Aug 12, 2002 |
| Deed Document Number | 200957344 |
| Prior Transfer Date | May 29, 2008 |
| Prior Transfer Doc | 0000229617 |
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Property Address | 439 E 51ST ST, BROOKLYN, NY 11203-4401 |
| Transaction Type | Mortgage |
| Record Updated | Jan 4, 2024 |
| Name | Verified Name |
|---|
| Document Number | 0000247947 |
|---|---|
| Date | Sep 27, 2023 |
| Instrument | 2023000247947 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Address | 11819 MIAMI ST, OMAHA, NE 68164 |
| Amount | Amount Recorded |
|---|
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 | $39,780 (+12.18%) Land $12,120 Building $27,660 | $663,000 (+12.18%) Land $202,000 Building $461,000 | |
| 2025 | $5,749.00 (+12.35%) | ||
| 2023 | $5,117.00 | $35,460 Land $12,120 Building $23,340 | $591,000 Land $202,000 Building $389,000 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 1,716 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Communications Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: Starry.
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