The Calhoun School
K-12 School in New York City, NY · 433 West End Ave · 10024
At a glance
The Calhoun School is a 65,752-square-foot K-12 school at 433 West End Ave in New York City, New York, built in 1974. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D), a site energy-use intensity of 127.2 kBtu/ft² and 807 tCO₂e of greenhouse-gas emissions. That score is higher than 0% of the 2,052 scored K-12 school buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 1 (band D) |
| Site EUI | 127.2 kBtu/ft² |
| Source EUI | 263.0 kBtu/ft² |
| GHG emissions | 807 tCO₂e |
| GHG intensity | 12.3 kgCO₂e/ft² |
| Electricity | 1,443,611 kWh |
| Natural gas | 7,379 therms |
| Gross floor area | 65,752 sq ft |
| Source record | nyc:6564032:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 1 | ±0 | 127.2 kBtu/ft² | 807 tCO₂e |
| 2023 | 1 | ±0 | 177.3 kBtu/ft² | 774 tCO₂e |
| 2022 | 1 | 195.4 kBtu/ft² | 712 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
- 433 West End Ave
- City
- New York City
- State
- New York
- ZIP
- 10024
- Coordinates
- 40.78544, -73.98038
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does The Calhoun School compare with other K-12 school buildings in New York City?
The latest disclosures cover 2,301 K-12 school buildings in New York City, out of 48,310 buildings citywide. The Calhoun School's ENERGY STAR score of 1 compares with an average of 64 across the 2,052 that report a score; it scores higher than 0% of them and lower than 99%. Its site EUI of 127.2 kBtu/ft² is about twice the average of 61.3 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 12.3 kgCO₂e/ft² is about 156% above the group average of 4.8 kgCO₂e/ft².
At 65,752 sq ft, it is about 35% below the average floor area of 101,338 sq ft for those buildings. It was built in 1974, 21 years later than the group's average year built (1954). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².
How has The Calhoun School's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for The Calhoun School, covering report years 2022–2024. Its ENERGY STAR score was 1 in both 2022 and 2024. Site EUI moved from 195.4 kBtu/ft² (2022) to 127.2 kBtu/ft² (2024), a 35% decrease. Reported emissions went from 712 tCO₂e to 807 tCO₂e over the same span (up 13%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 points below 75, the threshold for ENERGY STAR certification. 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. The Calhoun School's 127.2 kBtu/ft² across 65,752 sq ft works out to about 8.4 billion Btu (2,451 MWh-equivalent) in 2024. Its source EUI of 263.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,443,611 kWh of electricity and 7,379 therms of natural gas for the year.
Which law requires The Calhoun School to report its energy use?
The Calhoun School 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:6564032:2024). 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 K-12 school buildings in New York City
- Q398 (OECID: 0401856; BBL: 4012420032)· 65,470 sq ft · score 6 (D)
- K366 (OECID: 0301859; BBL: 3082150012)· 65,203 sq ft · score 16 (D)
- The Town School· 65,000 sq ft · score 69 (C)
- Trevor Day School Lower School· 64,986 sq ft · score 12 (D)
- M841 (OECID: 0100033; BBL: 1012300001)· 64,880 sq ft · score 69 (C)
- K185 (OECID: 0300187; BBL: 3060430001)· 64,800 sq ft · score 38 (D)
- K-12 School buildings in New York City· 2,301 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 The Calhoun School's energy grade?
The Calhoun School scores 1 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does The Calhoun School use?
Its 2024 site energy-use intensity was 127.2 kBtu/ft² (263.0 kBtu/ft² source) across 65,752 sq ft, including 1,443,611 kWh of electricity and 7,379 therms of natural gas.
What are The Calhoun School's carbon emissions?
The Calhoun School reported 807 tCO₂e of greenhouse-gas emissions (12.3 kgCO₂e/ft²) for 2024.
Where is The Calhoun School?
The Calhoun School is at 433 West End Ave, in New York City, New York 10024. Its coordinates are 40.78544, -73.98038 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is The Calhoun School and when was it built?
The Calhoun School has 65,752 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1974 as its year built. It is classed as K-12 school.
Is The Calhoun School 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, “The Calhoun School, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/the-calhoun-school-91d8b732 (data as of October 2, 2026).