520 WEST 135 STREET
Office building · Manhattan · 10031
At a glance
520 WEST 135 STREET in Manhattan, NY is listed on the New York City property roll as “Office building”, BBL 1019880053. The roll records 43,000 sq ft of building area, 3 floors, a 1915 build year and an assessed value of $3,572,100.
The building's own benchmarking filing
Energy performance
From the building's own filing under its city's benchmarking ordinance, latest of 2 years on record. 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 | 1019880053 |
| Site address | 520 WEST 135 STREET |
| Land use (DOR) | O2 — Office building |
| Building area (actual) | 43,000 sq ft |
| Floors / units / buildings | 3 / 1 / 1 |
| Lot size | 15,987 sq ft |
| Year built | 1915 |
| Zoning (primary) | — |
| Land value | $313,200 |
| Building value | — |
| Total assessed value | $3,572,100 |
Recorded owner (assessment roll)
BLDG 520 WEST 135TH STREET LLC
Owner mailing address: not listed
Location
- Address
- 520 WEST 135 STREET
- City
- Manhattan
- ZIP
- 10031
- Coordinates
- 40.81950, -73.95439
Within ~650 m
Nearby office buildings
- 3280 BROADWAY0 tenants
256,150 sq ft · 8 fl · 1927
- 615 WEST 131 STREET0 tenants
210,000 sq ft · 6 fl · 1924
- 461 WEST 126 STREET0 tenants
153,404 sq ft · 11 fl · 1980
- 1361 AMSTERDAM AVENUE0 tenants
124,000 sq ft · 6 fl · 1911
- 2331 12 AVENUE0 tenants
14,625 sq ft · 3 fl · 1920
- 537 WEST 125 STREET0 tenants
6,950 sq ft · 3 fl · 1930
How does 520 WEST 135 STREET compare with other New York office buildings?
At 43,000 sq ft, 520 WEST 135 STREET is about 36% 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 $83 per square foot of building area, against $157 across all office floor area on the roll.
What has happened at 520 WEST 135 STREET recently?
The building files energy-benchmarking disclosures — 2 report years are matched to this parcel.
What does “Office building” mean for this parcel?
The New York City roll classifies BBL 1019880053 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 520 WEST 135 STREET?
The recorded owner on the New York City assessment roll (current) is BLDG 520 WEST 135TH STREET LLC.
How big is 520 WEST 135 STREET?
The New York City roll records 43,000 sq ft of building area, 3 floors, a build year of 1915. It sits on a 15,987 sq ft lot.
What is the assessed value of 520 WEST 135 STREET?
$3,572,100 on the New York City roll. Assessed values are taxable-roll figures, not market prices.
What is the BBL for 520 WEST 135 STREET?
BBL 1019880053, site address 520 WEST 135 STREET, Manhattan. 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 520 WEST 135 STREET
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 1019880053.
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, “520 WEST 135 STREET, Manhattan, NY (BBL 1019880053)”, https://buildingcensus.com/offices/nyc/office-building-c9444beb (data as of September 11, 2026).