New York City property record for 421 Union St, Brooklyn, NY 11231
| Property Type | Duplex |
|---|---|
| Details | 2,289 sqft · built 1899 |
| Lot Size | 0.046 acres (2,000 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $11,121 (2025) |
| Deeds & Mortgages | Mar 2020 Mortgage |
| APN | 00430-0075 |
| Primary APN | 00430-0075 |
|---|---|
| Alternative APNs |
|
| Units | 2 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 2,289 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 | 2,000 sqft (0.046 acres) |
| Lot Dimensions | 100 ft deep x 20 ft wide |
| Account Number | 3-00430-0075 |
|---|---|
| Street Address | 421 UNION ST |
| City | BROOKLYN |
| State | NY |
| Zip | 11231-5021 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R6B |
| Legal Block | 430 |
| Legal Lot Number | 75 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 7500 |
Source: New York City records, 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 | Individual Name on Record |
|---|---|
| Mailing Address | 520 HEATHERTON VLG, ALTAMONTE SPRINGS, FL 32714-3151 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 6, 2001 |
| Deed Sale | Sep 6, 2001 |
| Deed Book / Page | 5275 / 1195 |
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Property Address | 421 UNION ST, BROOKLYN, NY 11231-5021 |
| Document Number | 0000109553 |
| Instrument Date | Mar 4, 2020 |
| Transaction Type | Mortgage |
| Record Updated | May 19, 2020 |
| Title Company | COACH TITLE INSURANCE AGENCY, COACH TITLE INS AGCY |
| Name | Verified Name |
|---|---|
| Address | 20 E GRAND ST #M MOUNT VERNON NY 105522252, M, MOUNT VERNON, NY 10552-2252 |
| Document Number | 0000109553 |
|---|---|
| Date | Mar 26, 2020 |
| Instrument | 109553 |
| Name | ACADEMY MTG |
|---|---|
| Type | Mortgage Company |
| Address | FARMINGDALE, NY 11735 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Mar 25, 2050 |
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 | $204,120 (+20.25%) Land $36,360 Building $167,760 | $3,402,000 (+20.25%) Land $606,000 Building $2,796,000 | |
| 2025 | $11,121.00 (+45.58%) | ||
| 2023 | $7,639.00 | $169,740 Land $36,360 Building $133,380 | $2,829,000 Land $606,000 Building $2,223,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 Record median of 12 policies |
| Nearby Flood Policies | 12 in force |
| Nearby Flood Claims | 5 (2012–2026) |
| Claims Outside the SFHA | 4 of 5 |
| Most Recent Claim | Aug 2026 · rainfall accumulation |
| 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.
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 1,820 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: Skywire Networks, Starry.
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