509 5 AVENUE
Office building · Brooklyn · 11215
At a glance
509 5 AVENUE in Brooklyn, NY is listed on the New York City property roll as “Office building”, BBL 3010290004. The roll records 36,686 sq ft of building area, 5 floors, a 1920 build year and an assessed value of $3,476,700.
The building's own benchmarking filing
Energy performance
From the building's own filing under its city's benchmarking ordinance. An ENERGY STAR score of 75 or above means the building outperforms three quarters of comparable buildings nationally. It is a self-reported figure, verified by the city only to the extent the ordinance requires.
New York City assessment roll
Parcel record
| Field | Value |
|---|---|
| BBL | 3010290004 |
| Site address | 509 5 AVENUE |
| Land use (DOR) | O5 — Office building |
| Building area (actual) | 36,686 sq ft |
| Floors / units / buildings | 5 / 3 / 1 |
| Lot size | 7,341 sq ft |
| Year built | 1920 |
| Zoning (primary) | — |
| Land value | $315,000 |
| Building value | — |
| Total assessed value | $3,476,700 |
Recorded owner (assessment roll)
509 FIFTH ASSOCIATES
Owner mailing address: not listed
Location
- Address
- 509 5 AVENUE
- City
- Brooklyn
- ZIP
- 11215
- Coordinates
- 40.66691, -73.98782
Within ~650 m
Nearby office buildings
- 168 7 STREET0 tenants
73,132 sq ft · 3 fl · 1910
- 157 13 STREET0 tenants
24,840 sq ft · 3 fl · 1931
- 530 3 AVENUE0 tenants
18,165 sq ft · 5 fl · 1900
- 432 3 AVENUE0 tenants
17,834 sq ft · 2 fl · 1920
- 275 20 STREET0 tenants
15,200 sq ft · 4 fl · 1930
- 601 5 AVENUE0 tenants
12,227 sq ft · 4 fl · 1925
How does 509 5 AVENUE compare with other New York office buildings?
At 36,686 sq ft, 509 5 AVENUE is about half 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 $95 per square foot of building area, against $157 across all office floor area on the roll.
What has happened at 509 5 AVENUE recently?
The building files energy-benchmarking disclosures — 1 report year are matched to this parcel.
What does “Office building” mean for this parcel?
The New York City roll classifies BBL 3010290004 as “Office building” (use code O5). 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 509 5 AVENUE?
The recorded owner on the New York City assessment roll (current) is 509 FIFTH ASSOCIATES.
How big is 509 5 AVENUE?
The New York City roll records 36,686 sq ft of building area, 5 floors, a build year of 1920. It sits on a 7,341 sq ft lot.
What is the assessed value of 509 5 AVENUE?
$3,476,700 on the New York City roll. Assessed values are taxable-roll figures, not market prices.
What is the BBL for 509 5 AVENUE?
BBL 3010290004, site address 509 5 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 509 5 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 3010290004.
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, “509 5 AVENUE, Brooklyn, NY (BBL 3010290004)”, https://buildingcensus.com/offices/nyc/office-building-ce5b1f02 (data as of September 11, 2026).