133 W21
College/University in New York City, NY · 133-141 W 21st Street · 10011
At a glance
133 W21 is a 117,484-square-foot college/university building at 133-141 W 21st Street in New York City, New York, built in 1940. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 109.9 kBtu/ft² and 1,131 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 109.9 kBtu/ft² |
| Source EUI | 222.5 kBtu/ft² |
| GHG emissions | 1,131 tCO₂e |
| GHG intensity | 9.6 kgCO₂e/ft² |
| Electricity | 2,108,916 kWh |
| Natural gas | 57,109 therms |
| Gross floor area | 117,484 sq ft |
| Source record | nyc:2637231:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 109.9 kBtu/ft² | 1,131 tCO₂e | |
| 2023 | — | 109.4 kBtu/ft² | 1,070 tCO₂e | |
| 2022 | — | 102.4 kBtu/ft² | 867 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
- 133-141 W 21st Street
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.74208, -73.99481
Within ~1 km
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- 11 Madison Avenuescore 77
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- One Madison Avenuescore —
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- Benchmarking Group - 3score —
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- PENN 11score 78
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See also: most efficient in New York City · biggest emitters
How does 133 W21 compare with other college/university buildings in New York City?
The latest disclosures cover 553 college/university buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 109.9 kBtu/ft² is about 16% above the average of 94.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 9.6 kgCO₂e/ft² is about 61% above the group average of 6.0 kgCO₂e/ft².
At 117,484 sq ft, it is about 42% below the average floor area of 202,329 sq ft for those buildings. It was built in 1940, 7 years earlier than the group's average year built (1947). Across all 24 jurisdictions BuildingCensus covers, the 2,113 college/university buildings average an ENERGY STAR score of 68 and a site EUI of 98.7 kBtu/ft².
How has 133 W21's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 133 W21, covering report years 2022–2024. Site EUI moved from 102.4 kBtu/ft² (2022) to 109.9 kBtu/ft² (2024), an 7% increase. Reported emissions went from 867 tCO₂e to 1,131 tCO₂e over the same span (up 31%).
What does a site EUI of 109.9 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. 133 W21's 109.9 kBtu/ft² across 117,484 sq ft works out to about 12.9 billion Btu (3,784 MWh-equivalent) in 2024. Its source EUI of 222.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,108,916 kWh of electricity and 57,109 therms of natural gas for the year.
Which law requires 133 W21 to report its energy use?
133 W21 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:2637231:2024). 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.
More college/university buildings in New York City
- 404 Lafayette· 115,985 sq ft
- Vagelos Education Center· 115,531 sq ft · EUI 194.8 kBtu/ft²
- 16 West 61st Street· 115,383 sq ft · EUI 72.4 kBtu/ft²
- CUNY SC > CSI_567_CSI: Biology & Chemistry· 114,664 sq ft · EUI 0.7 kBtu/ft²
- ARC· 114,452 sq ft · EUI 97.4 kBtu/ft²
- Steuben Hall· 114,000 sq ft · EUI 51.9 kBtu/ft²
- College/University buildings in New York City· 553 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 133 W21's energy grade?
133 W21 did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 109.9 kBtu/ft².
How much energy does 133 W21 use?
Its 2024 site energy-use intensity was 109.9 kBtu/ft² (222.5 kBtu/ft² source) across 117,484 sq ft, including 2,108,916 kWh of electricity and 57,109 therms of natural gas.
What are 133 W21's carbon emissions?
133 W21 reported 1,131 tCO₂e of greenhouse-gas emissions (9.6 kgCO₂e/ft²) for 2024.
Where is 133 W21?
133 W21 is at 133-141 W 21st Street, in New York City, New York 10011. Its coordinates are 40.74208, -73.99481 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 133 W21 and when was it built?
133 W21 has 117,484 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1940 as its year built. It is classed as college/university.
Is 133 W21 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, “133 W21, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/133-w21-9f96eae6 (data as of October 2, 2026).