6321 18 AVENUE
Office building · Brooklyn · 11204
At a glance
6321 18 AVENUE in Brooklyn, NY is listed on the New York City property roll as “Office building”, BBL 3055400001. The roll records 4,598 sq ft of building area, 3 floors, a 1931 build year and an assessed value of $473,850.
New York City assessment roll
Parcel record
| Field | Value |
|---|---|
| BBL | 3055400001 |
| Site address | 6321 18 AVENUE |
| Land use (DOR) | O8 — Office building |
| Building area (actual) | 4,598 sq ft |
| Floors / units / buildings | 3 / 4 / 1 |
| Lot size | 2,049 sq ft |
| Year built | 1931 |
| Zoning (primary) | — |
| Land value | $56,700 |
| Building value | — |
| Total assessed value | $473,850 |
Recorded owner (assessment roll)
6321 18TH AVENUE LLC
Owner mailing address: not listed
Location
- Address
- 6321 18 AVENUE
- City
- Brooklyn
- ZIP
- 11204
- Coordinates
- 40.61969, -73.98924
Within ~650 m
Nearby office buildings
- 1514 60 STREET0 tenants
64,743 sq ft · 7 fl · 2025
- 1547 60 STREET0 tenants
56,019 sq ft · 2025
- 1649 61 STREET0 tenants
28,476 sq ft · 3 fl · 1931
- 1813 65 STREET0 tenants
21,750 sq ft · 2 fl · 1966
- 5309 18 AVENUE0 tenants
19,120 sq ft · 6 fl · 1931
- 5911 16 AVENUE0 tenants
17,379 sq ft · 1 fl · 1931
How does 6321 18 AVENUE compare with other New York office buildings?
At 4,598 sq ft, 6321 18 AVENUE is less than a tenth the size of 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 $103 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 3055400001 as “Office building” (use code O8). 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 6321 18 AVENUE?
The recorded owner on the New York City assessment roll (current) is 6321 18TH AVENUE LLC.
How big is 6321 18 AVENUE?
The New York City roll records 4,598 sq ft of building area, 3 floors, a build year of 1931. It sits on a 2,049 sq ft lot.
What is the assessed value of 6321 18 AVENUE?
$473,850 on the New York City roll. Assessed values are taxable-roll figures, not market prices.
What is the BBL for 6321 18 AVENUE?
BBL 3055400001, site address 6321 18 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 6321 18 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 3055400001.
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, “6321 18 AVENUE, Brooklyn, NY (BBL 3055400001)”, https://buildingcensus.com/offices/nyc/office-building-03bef8dc (data as of September 11, 2026).