New York City property record for 523 73rd St, Brooklyn, NY 11209
| Property Type | Duplex |
|---|---|
| Details | 2,380 sqft · built 1910 |
| Lot Size | 0.046 acres (2,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,250,000 (Sep 2025) |
| Tax Bill | $9,332 (2025) |
| Deeds & Mortgages | Sep 2025 Sale & Mortgage |
| APN | 05910-0069 |
| Primary APN | 05910-0069 |
|---|---|
| Alternative APNs |
|
| Units | 2 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 2,380 sqft Living Area |
| 1st Floor Area | 1,040 sqft |
| Year Built | Built 1910 |
|---|---|
| Effective Year Built | Effective 1910 |
| Architectural Style | Duplex Single |
| Construction Type | Brick |
| Lot Area | 2,000 sqft (0.046 acres) |
| Lot Dimensions | 100 ft deep x 20 ft wide |
| Account Number | 3-05910-0069 |
|---|---|
| Street Address | 523 73RD ST |
| City | BROOKLYN |
| State | NY |
| Zip | 11209-2611 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R5B |
| Legal Block | 5910 |
| Legal Lot Number | 69 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 13000 |
Source: New York City records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 523 73RD ST, BROOKLYN, NY 11209-2611 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Individual(s) |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 24, 2025 · Amount on File |
| Deed Sale | Sep 24, 2025 · Amount on File |
| Prior Sale | Jul 23, 1997 · Amount on File |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Recording Date | Sep 24, 2025 |
| Property Address | 523 73RD ST, BROOKLYN, NY 11209-2611 |
| Document Number | 0000260559 |
| Instrument Date | Sep 12, 2025 |
| Instrument | 2025000260559 |
| Transaction Type | Transfer |
| Record Updated | Sep 30, 2025 |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 523 73RD ST, BROOKLYN, NY 11209-2611 |
| Name | Verified Name |
|---|---|
| Address | 523 73RD ST, BROOKLYN, NY 11209-2611 |
| Document Number | 0000260560 |
|---|---|
| Date | Sep 24, 2025 |
| Instrument | 2025000260560 |
| Name | CATHAY BANK |
|---|
| Amount | Amount on Record |
|---|
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 | $80,580 (+73.43%) Land $13,560 Building $67,020 | $1,343,000 (+26.7%) Land $226,000 Building $1,117,000 | |
| 2025 | $9,332.00 (+16.3%) | $46,463 (-42.3%) Land $9,906 Building $36,557 | $1,060,000 (-21.01%) Land $226,000 Building $834,000 |
| 2023 | $8,024.00 | $80,520 Land $13,560 Building $66,960 | $1,342,000 Land $226,000 Building $1,116,000 |
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 |
|---|
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 1,839 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Optimum.
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