521 Bergen
Office in New York City, NY · 521 Bergen Avenue · 10455
At a glance
521 Bergen is a 52,113-square-foot office building at 521 Bergen Avenue in New York City, New York, built in 2023. In its 2023 New York City benchmarking disclosure it reported a site energy-use intensity of 8.4 kBtu/ft² and 48 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 8.4 kBtu/ft² |
| Source EUI | 23.6 kBtu/ft² |
| GHG emissions | 48 tCO₂e |
| GHG intensity | 0.9 kgCO₂e/ft² |
| Electricity | 128,483 kWh |
| Natural gas | 0 therms |
| Water use | 3 kgal |
| Gross floor area | 52,113 sq ft |
| Source record | nyc:33915538:2023 |
Compliance context
Local Law 84 (LL84)
Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 521 Bergen Avenue
- City
- New York City
- State
- New York
- ZIP
- 10455
- Coordinates
- 40.81531, -73.91747
Within ~1 km
Nearby benchmarked buildings
- Concourse Villagescore —
Multifamily Housing · 1,753,000 sq ft
- Benchmarking Group - 88score 100
Hospital (General Medical & Surgical) · 1,633,485 sq ft
Hospital (General Medical & Surgical) · 1,193,438 sq ft
- MOTT HAVENscore 4
Multifamily Housing · 1,017,350 sq ft
- MORRISANIA AIR RIGHTS CAMPUSscore 30
Multifamily Housing · 1,006,300 sq ft
- MELROSEscore 5
Multifamily Housing · 983,100 sq ft
See also: most efficient in New York City · biggest emitters
How does 521 Bergen compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 8.4 kBtu/ft² is about 87% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.9 kgCO₂e/ft² is about 84% below the group average of 5.8 kgCO₂e/ft².
At 52,113 sq ft, it is about 75% below the average floor area of 205,440 sq ft for those buildings. It was built in 2023, 83 years later than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
What does a site EUI of 8.4 kBtu/ft² mean?
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. 521 Bergen's 8.4 kBtu/ft² across 52,113 sq ft works out to about 0.4 billion Btu (128 MWh-equivalent) in 2023. Its source EUI of 23.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 128,483 kWh of electricity, 0 therms of natural gas and 3 thousand gallons of water for the year.
Which law requires 521 Bergen to report its energy use?
521 Bergen reports under Local Law 84 (LL84), the legal basis of New York City's Energy and Water Data Disclosure program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record nyc:33915538:2023). Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
More office buildings in New York City
- 231 Norman Avenue· 52,088 sq ft
- RealTegrity - 231 Norman Avenue· 52,088 sq ft · score 92 (A)
- HRA_4159_Bushwick Multi Service Center· 52,000 sq ft · score 76 (B)
- HRC Corporation : 91 5 AVENUE· 52,000 sq ft · score 44 (D)
- DCAS_1010_City Hall· 52,000 sq ft · score 1 (D)
- 160 7th Street· 52,000 sq ft · score 94 (A)
- Office buildings in New York City· 3,384 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
- Most efficient large buildings in New York City
- Least efficient large buildings in New York City
- Biggest emitters in New York City
Frequently asked questions
What is 521 Bergen's energy grade?
521 Bergen did not report an ENERGY STAR score in its 2023 disclosure, but its site energy-use intensity was 8.4 kBtu/ft².
How much energy does 521 Bergen use?
Its 2023 site energy-use intensity was 8.4 kBtu/ft² (23.6 kBtu/ft² source) across 52,113 sq ft, including 128,483 kWh of electricity and 0 therms of natural gas.
What are 521 Bergen's carbon emissions?
521 Bergen reported 48 tCO₂e of greenhouse-gas emissions (0.9 kgCO₂e/ft²) for 2023.
Where is 521 Bergen?
521 Bergen is at 521 Bergen Avenue, in New York City, New York 10455. Its coordinates are 40.81531, -73.91747 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 521 Bergen and when was it built?
521 Bergen has 52,113 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2023 as its year built. It is classed as office.
Is 521 Bergen covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 Energy and Water Data Disclosure disclosure, which lists the buildings reporting under Local Law 84 (LL84).
Working with New York City building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: Energy and Water Data Disclosure (Local Law 84 (LL84)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “521 Bergen, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/521-bergen-a8614e90 (data as of October 2, 2026).