541 WEST 21 STREET
Office in New York City, NY · 541 W 21st St · 10011
At a glance
541 WEST 21 STREET is a 57,150-square-foot office building at 541 W 21st St in New York City, New York, built in 1915. In its 2022 New York City benchmarking disclosure it reported a site energy-use intensity of 8.7 kBtu/ft² and 42 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 8.7 kBtu/ft² |
| Source EUI | 24.5 kBtu/ft² |
| GHG emissions | 42 tCO₂e |
| GHG intensity | 0.7 kgCO₂e/ft² |
| Electricity | 146,511 kWh |
| Gross floor area | 57,150 sq ft |
| Source record | nyc:26682952:2022 |
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
- 541 W 21st St
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.74698, -74.00646
Within ~1 km
Nearby benchmarked buildings
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- 50 Hudson Yardsscore 76
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- The Spiral - 66 Hudson Boulevardscore 82
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- 111 Eighth Avenuescore —
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- 601 West 26 St - Starrett Lehighscore 93
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See also: most efficient in New York City · biggest emitters
How does 541 WEST 21 STREET 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 8.7 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 0.7 kgCO₂e/ft² is about 88% below the group average of 5.8 kgCO₂e/ft².
At 57,150 sq ft, it is about 72% below the average floor area of 205,440 sq ft for those buildings. It was built in 1915, 25 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.
What does a site EUI of 8.7 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. 541 WEST 21 STREET's 8.7 kBtu/ft² across 57,150 sq ft works out to about 0.5 billion Btu (146 MWh-equivalent) in 2022. Its source EUI of 24.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 146,511 kWh of electricity for the year.
Which law requires 541 WEST 21 STREET to report its energy use?
541 WEST 21 STREET 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 2022 disclosure (source record nyc:26682952:2022). 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
- Dawning: 201 Bay Street· 57,138 sq ft · score 76 (B)
- 1021 38 STREET· 57,106 sq ft · score 94 (A)
- Kiamie New York Corp.· 57,020 sq ft · score 75 (B)
- FRANGENE CO.· 57,000 sq ft · score 91 (A)
- 240 Kent Avenue· 56,900 sq ft · score 75 (B)
- CB - 40 Gansevoort Street· 56,860 sq ft · score 36 (D)
- 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 541 WEST 21 STREET's energy grade?
541 WEST 21 STREET did not report an ENERGY STAR score in its 2022 disclosure, but its site energy-use intensity was 8.7 kBtu/ft².
How much energy does 541 WEST 21 STREET use?
Its 2022 site energy-use intensity was 8.7 kBtu/ft² (24.5 kBtu/ft² source) across 57,150 sq ft, including 146,511 kWh of electricity.
What are 541 WEST 21 STREET's carbon emissions?
541 WEST 21 STREET reported 42 tCO₂e of greenhouse-gas emissions (0.7 kgCO₂e/ft²) for 2022.
Where is 541 WEST 21 STREET?
541 WEST 21 STREET is at 541 W 21st St, in New York City, New York 10011. Its coordinates are 40.74698, -74.00646 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 541 WEST 21 STREET and when was it built?
541 WEST 21 STREET has 57,150 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1915 as its year built. It is classed as office.
Is 541 WEST 21 STREET covered by Local Law 84 (LL84)?
Yes — it appears in the 2022 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, “541 WEST 21 STREET, New York City, New York — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/541-west-21-street-5a4e8f02 (data as of October 2, 2026).