135 West 50th St.
Office in New York City, NY · 10020
At a glance
135 West 50th St. is a 751,395-square-foot office building in New York City, New York, built in 1962. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 38.2 kBtu/ft² and 2,429 tCO₂e of greenhouse-gas emissions. That score is higher than 87% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 38.2 kBtu/ft² |
| Source EUI | 73.2 kBtu/ft² |
| GHG emissions | 2,429 tCO₂e |
| GHG intensity | 3.2 kgCO₂e/ft² |
| Electricity | 3,807,060 kWh |
| Natural gas | 20,494 therms |
| Water use | 14,593 kgal |
| Gross floor area | 751,395 sq ft |
| Source record | nyc:3914052:2023 |
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.
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Location
- Address
- 135 West 50th St.
- City
- New York City
- State
- New York
- ZIP
- 10020
- Coordinates
- 40.76037, -73.98153
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 135 West 50th St. 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. 135 West 50th St.'s ENERGY STAR score of 95 compares with an average of 72 across the 2,519 that report a score; it scores higher than 87% of them and lower than 11%. Its site EUI of 38.2 kBtu/ft² is about 41% 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 3.2 kgCO₂e/ft² is about 45% below the group average of 5.8 kgCO₂e/ft².
At 751,395 sq ft, it is about 266% above the average floor area of 205,440 sq ft for those buildings. It was built in 1962, 22 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 an ENERGY STAR score of 95 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In New York City, 43% of scored buildings are at 75 or above.
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. 135 West 50th St.'s 38.2 kBtu/ft² across 751,395 sq ft works out to about 28.7 billion Btu (8,412 MWh-equivalent) in 2023. Its source EUI of 73.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,807,060 kWh of electricity, 20,494 therms of natural gas and 14,593 thousand gallons of water for the year.
Which law requires 135 West 50th St. to report its energy use?
135 West 50th St. 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:3914052:2023). 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
- 200 Fifth Avenue (190 5 AVENUE)· 748,218 sq ft · score 86 (A)
- 1440 Broadway· 746,735 sq ft · score 95 (A)
- 1440 Broadway· 746,735 sq ft · score 92 (A)
- 1250 Waters Place· 743,316 sq ft
- 50 West 47th Street· 739,305 sq ft · score 78 (B)
- 235 East 42nd Street· 736,974 sq ft
- 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 135 West 50th St.'s energy grade?
135 West 50th St. scores 95 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 135 West 50th St. use?
Its 2023 site energy-use intensity was 38.2 kBtu/ft² (73.2 kBtu/ft² source) across 751,395 sq ft, including 3,807,060 kWh of electricity and 20,494 therms of natural gas.
What are 135 West 50th St.'s carbon emissions?
135 West 50th St. reported 2,429 tCO₂e of greenhouse-gas emissions (3.2 kgCO₂e/ft²) for 2023.
Where is 135 West 50th St.?
135 West 50th St. is in New York City, New York 10020. Its coordinates are 40.76037, -73.98153 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 135 West 50th St. and when was it built?
135 West 50th St. has 751,395 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1962 as its year built. It is classed as office.
Is 135 West 50th St. 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).
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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, “135 West 50th St., New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/135-west-50th-st-14c95b0d (data as of October 2, 2026).