Butler Library
College/University in New York City, NY · 535 West 114th Street · 10027
At a glance
Butler Library is a 475,879-square-foot college/university building at 535 West 114th Street in New York City, New York, built in 1934. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 34.5 kBtu/ft² and 1,812 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 34.5 kBtu/ft² |
| Source EUI | 92.0 kBtu/ft² |
| GHG emissions | 1,812 tCO₂e |
| GHG intensity | 3.8 kgCO₂e/ft² |
| Electricity | 4,446,400 kWh |
| Natural gas | 12,469 therms |
| Gross floor area | 475,879 sq ft |
| Source record | nyc:2658465:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 34.5 kBtu/ft² | 1,812 tCO₂e | |
| 2023 | — | 25.4 kBtu/ft² | 1,709 tCO₂e | |
| 2022 | — | 93.1 kBtu/ft² | 4,064 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 535 West 114th Street
- City
- New York City
- State
- New York
- ZIP
- 10027
- Coordinates
- 40.80624, -73.96373
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Butler Library 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 34.5 kBtu/ft² is about 63% below the average of 94.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.8 kgCO₂e/ft² is about 37% below the group average of 6.0 kgCO₂e/ft².
At 475,879 sq ft, it is about 135% above the average floor area of 202,329 sq ft for those buildings. It was built in 1934, 13 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 Butler Library's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Butler Library, covering report years 2022–2024. Site EUI moved from 93.1 kBtu/ft² (2022) to 34.5 kBtu/ft² (2024), a 63% decrease. Reported emissions went from 4,064 tCO₂e to 1,812 tCO₂e over the same span (down 55%).
What does a site EUI of 34.5 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. Butler Library's 34.5 kBtu/ft² across 475,879 sq ft works out to about 16.4 billion Btu (4,812 MWh-equivalent) in 2024. Its source EUI of 92.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,446,400 kWh of electricity and 12,469 therms of natural gas for the year.
Which law requires Butler Library to report its energy use?
Butler Library 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:2658465:2024). 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
- 3 MetroTech Center· 454,430 sq ft · EUI 43.3 kBtu/ft²
- 370 Jay Street (NYU Applied Sciences)· 444,970 sq ft · EUI 50.5 kBtu/ft²
- CMSV 1· 443,559 sq ft
- Jacobs / 6 MetroTech Campus· 429,126 sq ft · EUI 158.1 kBtu/ft²
- Jacobs/6 Metrotech Campus· 416,804 sq ft · EUI 180.5 kBtu/ft²
- 1225 Morris Park Ave· 410,029 sq ft · EUI 162.2 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 Butler Library's energy grade?
Butler Library did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 34.5 kBtu/ft².
How much energy does Butler Library use?
Its 2024 site energy-use intensity was 34.5 kBtu/ft² (92.0 kBtu/ft² source) across 475,879 sq ft, including 4,446,400 kWh of electricity and 12,469 therms of natural gas.
What are Butler Library's carbon emissions?
Butler Library reported 1,812 tCO₂e of greenhouse-gas emissions (3.8 kgCO₂e/ft²) for 2024.
Where is Butler Library?
Butler Library is at 535 West 114th Street, in New York City, New York 10027. Its coordinates are 40.80624, -73.96373 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Butler Library and when was it built?
Butler Library has 475,879 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1934 as its year built. It is classed as college/university.
Is Butler Library 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, “Butler Library, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/butler-library-f5ac48c2 (data as of October 2, 2026).