New York City property record for 5123 Ave J, Brooklyn, NY 11234
| Property Type | Duplex |
|---|---|
| Details | 2,184 sqft · built 1945 |
| Lot Size | 0.055 acres (2,400 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $7,789 (2025) |
| Deeds & Mortgages | Aug 2020 Mortgage Apr 2020 Loan Modification |
| APN | 07777-0001 |
| Primary APN | 07777-0001 |
|---|---|
| Alternative APNs |
|
| Units | 2 Units |
|---|---|
| Stories | 1 Story |
| Building Area | 2,184 sqft Living Area |
| 1st Floor Area | 2,184 sqft |
| Year Built | Built 1945 |
|---|---|
| Effective Year Built | Effective 1945 |
| Architectural Style | Duplex Single |
| Lot Area | 2,400 sqft (0.055 acres) |
| Lot Dimensions | 100 ft deep x 24 ft wide |
| View / Lot | Corner |
| Account Number | 3-07777-0001 |
|---|---|
| Street Address | 5123 AVENUE J |
| City | BROOKLYN |
| State | NY |
| Zip | 11234-2305 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R5 |
| Legal Block | 7777 |
| Legal Lot Number | 1 |
| Jurisdiction | KINGS (BROOKLYN) NY |
| Township / Civil Division | BROOKLYN |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 72800 |
5123 Ave J, a duplex, is owned and occupied by an individual.
Source: New York City records, as of May 4, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 5123 AVENUE J, BROOKLYN, NY 11234-2305 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 |
|---|---|
| Aug 20, 2020 | Deed of Trust, Mortgage JPMORGAN CHASE BANK, N.A. |
| Apr 28, 2020 | Loan Modification, Mortgage · Conventional Mortgage JP MORGAN CHASE BK |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Property Address | 5123 AVENUE J, BROOKLYN, NY 11234-2305 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000235626 |
|---|---|
| Date | Aug 20, 2020 |
| Instrument | 2020000235626 |
| Name | JPMORGAN CHASE BANK, N.A. |
|---|---|
| Address | 1111 POLARIS PKWY, COLUMBUS, OH 43240 |
| Amount | Amount on Record |
|---|
| Document Type | Loan Modification |
|---|---|
| Jurisdiction | KINGS (BROOKLYN) NY |
| Property Address | 5123 AVENUE J, BROOKLYN, NY 11234-2305 |
| Document Number | 0000235627 |
| Instrument Date | Apr 28, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Aug 27, 2020 |
| Title Company | SEARCH NY |
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 5123 AVENUE J BROOKLYN NY 112342305, BROOKLYN, NY 11234-2305 |
| Document Number | 0000235627 |
|---|---|
| Date | Aug 20, 2020 |
| Instrument | 235627 |
| Name | JP MORGAN CHASE BK |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 180 Months |
| Due | Aug 19, 2035 |
| Rate Type | Fixed Rate |
|---|---|
| Rate | 3.25% |
The 2025 property tax bill for 5123 Ave J was $7,789.
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 | $48,300 Land $12,840 Building $35,460 | $805,000 Land $214,000 Building $591,000 | |
| 2025 | $7,789.00 | ||
| 2023 | $7,337.00 | $44,940 Land $12,840 Building $32,100 | $749,000 Land $214,000 Building $535,000 |
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 5123 Ave J; there have been 2 flood claims nearby since 1979.
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 File median of 10 policies |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 2 (1979–1981) |
| Most Recent Claim | Mar 1981 · rainfall accumulation |
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 5123 Ave J 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 1,891 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
May also be available: Starry, T-Mobile.
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