6424 9 AVENUE
Office building · Brooklyn · 11220
At a glance
6424 9 AVENUE in Brooklyn, NY is listed on the New York City property roll as “Office building”, BBL 3057420043. The roll records 20,295 sq ft of building area, 2 floors, a 1913 build year and an assessed value of $1,560,600.
New York City assessment roll
Parcel record
| Field | Value |
|---|---|
| BBL | 3057420043 |
| Site address | 6424 9 AVENUE |
| Land use (DOR) | O2 — Office building |
| Building area (actual) | 20,295 sq ft |
| Floors / units / buildings | 2 / 3 / 1 |
| Lot size | 20,520 sq ft |
| Year built | 1913 |
| Zoning (primary) | — |
| Land value | $159,300 |
| Building value | — |
| Total assessed value | $1,560,600 |
Recorded owner (assessment roll)
ZEE-JAY REALTY CO
Owner mailing address: not listed
Location
- Address
- 6424 9 AVENUE
- City
- Brooklyn
- ZIP
- 11220
- Coordinates
- 40.63174, -74.01047
Within ~650 m
Nearby office buildings
- 745 64 STREET0 tenants
140,066 sq ft · 4 fl · 1953
- 701 64 STREET0 tenants
94,000 sq ft · 3 fl · 1956
- 6418 8 AVENUE0 tenants
64,796 sq ft · 8 fl · 2025
- 730 64 STREET0 tenants
50,760 sq ft · 3 fl · 2016
- 6409 8 AVENUE0 tenants
32,000 sq ft · 3 fl · 1970
- 762 59 STREET0 tenants
23,013 sq ft · 8 fl · 2005
How does 6424 9 AVENUE compare with other New York office buildings?
At 20,295 sq ft, 6424 9 AVENUE is about 70% smaller than the average office building on the New York City roll, which comes to 67,377 sq ft across 7,166 buildings.
Its assessed value works out to $77 per square foot of building area, against $157 across all office floor area on the roll.
What does “Office building” mean for this parcel?
The New York City roll classifies BBL 3057420043 as “Office building” (use code O2). BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Frequently asked questions
Who owns 6424 9 AVENUE?
The recorded owner on the New York City assessment roll (current) is ZEE-JAY REALTY CO.
How big is 6424 9 AVENUE?
The New York City roll records 20,295 sq ft of building area, 2 floors, a build year of 1913. It sits on a 20,520 sq ft lot.
What is the assessed value of 6424 9 AVENUE?
$1,560,600 on the New York City roll. Assessed values are taxable-roll figures, not market prices.
What is the BBL for 6424 9 AVENUE?
BBL 3057420043, site address 6424 9 AVENUE, Brooklyn. It is the key to look the parcel up in the Department of City Planning PLUTO extract and Department of Finance rolling sales (New York City).
More around 6424 9 AVENUE
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- New York City — Department of City Planning PLUTO extract and Department of Finance rolling sales. The city publishes no owner mailing address, so landlord portfolios cannot be grouped here, and its business licences cover regulated trades rather than office tenants.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
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Dataset updated . Source: New York City assessment roll, BBL 3057420043.
About this data
Source: Department of City Planning PLUTO extract and Department of Finance rolling sales (New York City), as published September 11, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “6424 9 AVENUE, Brooklyn, NY (BBL 3057420043)”, https://buildingcensus.com/offices/nyc/office-building-743426a0 (data as of September 11, 2026).