Triangle: 255 W 36th St.
Office in New York City, NY · 255 W 36th St · 10018
At a glance
Triangle: 255 W 36th St. is a 120,459-square-foot office building in New York City, New York, built in 1923. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 49.3 kBtu/ft² and 511 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 49.3 kBtu/ft² |
| Source EUI | 97.5 kBtu/ft² |
| GHG emissions | 511 tCO₂e |
| GHG intensity | 4.2 kgCO₂e/ft² |
| Electricity | 923,478 kWh |
| Natural gas | 27,856 therms |
| Water use | 3,135 kgal |
| Gross floor area | 120,459 sq ft |
| Source record | nyc:9648797:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 49.3 kBtu/ft² | 511 tCO₂e | |
| 2023 | — | 47.7 kBtu/ft² | 470 tCO₂e | |
| 2022 | — | 46.3 kBtu/ft² | 428 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
- 255 W 36th St
- City
- New York City
- State
- New York
- ZIP
- 10018
- Coordinates
- 40.75293, -73.99120
Within ~1 km
Nearby benchmarked buildings
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- PENN 1 (LL97)score —
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- PENN 1 (Offices)score —
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- One Bryant Parkscore 62
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See also: most efficient in New York City · biggest emitters
How does Triangle: 255 W 36th 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. Its site EUI of 49.3 kBtu/ft² is about 24% 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 4.2 kgCO₂e/ft² is about 27% below the group average of 5.8 kgCO₂e/ft².
At 120,459 sq ft, it is about 41% below the average floor area of 205,440 sq ft for those buildings. It was built in 1923, 17 years earlier 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.
How has Triangle: 255 W 36th St.'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Triangle: 255 W 36th St., covering report years 2022–2024. Site EUI moved from 46.3 kBtu/ft² (2022) to 49.3 kBtu/ft² (2024), an 6% increase. Reported emissions went from 428 tCO₂e to 511 tCO₂e over the same span (up 19%).
What does a site EUI of 49.3 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. Triangle: 255 W 36th St.'s 49.3 kBtu/ft² across 120,459 sq ft works out to about 5.9 billion Btu (1,740 MWh-equivalent) in 2024. Its source EUI of 97.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 923,478 kWh of electricity, 27,856 therms of natural gas and 3,135 thousand gallons of water for the year.
Which law requires Triangle: 255 W 36th St. to report its energy use?
Triangle: 255 W 36th 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 2024 disclosure (source record nyc:9648797:2024). 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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- 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 Triangle: 255 W 36th St.'s energy grade?
Triangle: 255 W 36th St. did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 49.3 kBtu/ft².
How much energy does Triangle: 255 W 36th St. use?
Its 2024 site energy-use intensity was 49.3 kBtu/ft² (97.5 kBtu/ft² source) across 120,459 sq ft, including 923,478 kWh of electricity and 27,856 therms of natural gas.
What are Triangle: 255 W 36th St.'s carbon emissions?
Triangle: 255 W 36th St. reported 511 tCO₂e of greenhouse-gas emissions (4.2 kgCO₂e/ft²) for 2024.
Where is Triangle: 255 W 36th St.?
Triangle: 255 W 36th St. is in New York City, New York 10018. Its coordinates are 40.75293, -73.99120 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Triangle: 255 W 36th St. and when was it built?
Triangle: 255 W 36th St. has 120,459 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1923 as its year built. It is classed as office.
Is Triangle: 255 W 36th St. 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, “Triangle: 255 W 36th St., New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/triangle-255-w-36th-st-aaed650c (data as of October 2, 2026).