50 UN Plaza
Multifamily Housing in New York City, NY · 50 UNITED NATIONS PLZ. · 10017
At a glance
50 UN Plaza is a 288,541-square-foot multifamily housing building at 50 UNITED NATIONS PLZ. in New York City, New York, built in 2008. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 99.0 kBtu/ft² and 2,414 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 99.0 kBtu/ft² |
| Source EUI | 179.0 kBtu/ft² |
| GHG emissions | 2,414 tCO₂e |
| GHG intensity | 8.4 kgCO₂e/ft² |
| Electricity | 3,202,393 kWh |
| Natural gas | 11,840 therms |
| Water use | 11,793 kgal |
| Gross floor area | 288,541 sq ft |
| Source record | nyc:4959187:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 99.0 kBtu/ft² | 2,414 tCO₂e | |
| 2023 | 6 | +1 | 87.9 kBtu/ft² | 2,393 tCO₂e |
| 2022 | 5 | 101.2 kBtu/ft² | 2,420 tCO₂e |
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.
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Location
- Address
- 50 UNITED NATIONS PLZ.
- City
- New York City
- State
- New York
- ZIP
- 10017
- Coordinates
- 40.75150, -73.96788
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 50 UN Plaza compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 99.0 kBtu/ft² is about 32% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.4 kgCO₂e/ft² is about 61% above the group average of 5.2 kgCO₂e/ft².
At 288,541 sq ft, it is about 186% above the average floor area of 100,951 sq ft for those buildings. It was built in 2008, 56 years later than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 50 UN Plaza's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 50 UN Plaza, covering report years 2022–2024. Its ENERGY STAR score went from 5 in 2022 to 6 in 2023 (+1 points). Site EUI moved from 101.2 kBtu/ft² (2022) to 99.0 kBtu/ft² (2024), a 2% decrease. Reported emissions went from 2,420 tCO₂e to 2,414 tCO₂e over the same span (down 0%).
What does a site EUI of 99.0 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. 50 UN Plaza's 99.0 kBtu/ft² across 288,541 sq ft works out to about 28.6 billion Btu (8,372 MWh-equivalent) in 2024. Its source EUI of 179.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,202,393 kWh of electricity, 11,840 therms of natural gas and 11,793 thousand gallons of water for the year.
Which law requires 50 UN Plaza to report its energy use?
50 UN Plaza 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 2024 disclosure (source record nyc:4959187:2024). 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.
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- Multifamily Housing buildings in New York City· 33,022 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 50 UN Plaza's energy grade?
50 UN Plaza did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 99.0 kBtu/ft².
How much energy does 50 UN Plaza use?
Its 2024 site energy-use intensity was 99.0 kBtu/ft² (179.0 kBtu/ft² source) across 288,541 sq ft, including 3,202,393 kWh of electricity and 11,840 therms of natural gas.
What are 50 UN Plaza's carbon emissions?
50 UN Plaza reported 2,414 tCO₂e of greenhouse-gas emissions (8.4 kgCO₂e/ft²) for 2024.
Where is 50 UN Plaza?
50 UN Plaza is at 50 UNITED NATIONS PLZ., in New York City, New York 10017. Its coordinates are 40.75150, -73.96788 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 50 UN Plaza and when was it built?
50 UN Plaza has 288,541 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2008 as its year built. It is classed as multifamily housing.
Is 50 UN Plaza covered by Local Law 84 (LL84)?
Yes — it appears in the 2024 Energy and Water Data Disclosure disclosure, which lists the buildings reporting under Local Law 84 (LL84).
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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, “50 UN Plaza, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/50-un-plaza-311f4ab7 (data as of October 2, 2026).