New York City property record for 173 Union St, Brooklyn, NY 11231
| Property Type | Triplex |
|---|---|
| Details | 3,520 sqft · built 1899 |
| Lot Size | 0.051 acres (2,200 sqft) |
| Owner | Company Name on File |
| Tax Bill | $9,067 (2025) |
| Deeds & Mortgages | Mar 2026 Mortgage Sep 2017 Mortgage |
| APN | 00337-0037 |
| Primary APN | 00337-0037 |
|---|---|
| Alternative APNs |
|
| Units | 6 Units |
|---|---|
| Stories | 3 Stories |
| Building Area | 3,520 sqft Living Area |
| 1st Floor Area | 1,100 sqft |
| Year Built | Built 1899 |
|---|---|
| Effective Year Built | Effective 1899 |
| Architectural Style | Triplex |
| Lot Area | 2,200 sqft (0.051 acres) |
| Lot Dimensions | 100 ft deep x 22 ft wide |
| Account Number | 3-00337-0037 |
|---|---|
| Street Address | 173 UNION ST |
| City | BROOKLYN |
| State | NY |
| Zip | 11231-3150 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Triplex |
| Local Zoning Code | R6B |
| Legal Block | 337 |
| Legal Lot Number | 37 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 6300 |
173 Union St, a triplex, is owned by a company.
Source: New York City records, as of May 4, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 35 GRYMES HILL RD, STATEN ISLAND, NY 10301-3818 |
| Owner Type | Company |
| Vesting | Company |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Mar 12, 2026 | Deed of Trust, Mortgage LAKE EQUIPMENT LEASING INC. |
| Sep 5, 2017 | Deed of Trust, Mortgage MASPETH FED'L S&L |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Property Address | 173 UNION ST, BROOKLYN, NY 11231-3150 |
| Transaction Type | Mortgage |
| Record Updated | Mar 24, 2026 |
| Name | Verified Name |
|---|
| Document Number | 0000071966 |
|---|---|
| Date | Mar 12, 2026 |
| Instrument | 2026000071966 |
| Name | LAKE EQUIPMENT LEASING INC. |
|---|---|
| Address | 64 MAIN ST, MILLBURN, NJ 07041 |
| Amount | Amount on Record |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Property Address | 173 UNION ST, BROOKLYN, NY 11231-3150 |
| Document Number | 0000339517 |
| Instrument Date | Sep 5, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Sep 18, 2017 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 35 GRYMES HILL RD STATEN ISLAND NY 103013818, STATEN ISLAND, NY 10301-3818 |
| Document Number | 0000339517 |
|---|---|
| Date | Sep 12, 2017 |
| Instrument | 339517 |
| Name | MASPETH FED'L S&L |
|---|---|
| Type | Federal Savings Bank |
| Address | 5618 69TH ST, MASPETH, NY 11378-1855 |
| Amount | Amount on Record |
|---|
The 2025 property tax bill for 173 Union St was $9,067.
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 | $266,280 Land $36,240 Building $230,040 | $4,438,000 Land $604,000 Building $3,834,000 | |
| 2025 | $9,067.00 | ||
| 2023 | $8,203.00 | $264,660 Land $36,240 Building $228,420 | $4,411,000 Land $604,000 Building $3,807,000 |
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 173 Union St; 1 flood insurance policy is in force nearby.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Nearby Flood Policies | 1 in force |
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.
The area around 173 Union 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 1,436 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 |
| Starry Fixed Wireless | 300 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Optimum.
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