423 West 120th Street
Residence Hall/Dormitory in New York City, NY · 10027
At a glance
423 West 120th Street is a 106,986-square-foot residence hall/dormitory in New York City, New York, built in 1967. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 9.2 kBtu/ft² and 75 tCO₂e of greenhouse-gas emissions. That score is higher than 85% of the 177 scored residence hall/dormitory buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 9.2 kBtu/ft² |
| Source EUI | 16.4 kBtu/ft² |
| GHG emissions | 75 tCO₂e |
| GHG intensity | 0.7 kgCO₂e/ft² |
| Electricity | 120,993 kWh |
| Natural gas | 5,719 therms |
| Gross floor area | 106,986 sq ft |
| Source record | nyc:2809867:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 100 | 9.2 kBtu/ft² | 75 tCO₂e | |
| 2022 | — | 56.9 kBtu/ft² | 340 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
- 423 West 120th Street
- City
- New York City
- State
- New York
- ZIP
- 10027
- Coordinates
- 40.80916, -73.95876
Within ~1 km
Nearby benchmarked buildings
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- Manhattanville Campusscore —
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- Morningside Campus Parentscore —
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See also: most efficient in New York City · biggest emitters
How does 423 West 120th Street compare with other residence hall/dormitory buildings in New York City?
The latest disclosures cover 343 residence hall/dormitory buildings in New York City, out of 48,310 buildings citywide. 423 West 120th Street's ENERGY STAR score of 100 compares with an average of 69 across the 177 that report a score; it scores higher than 85% of them. Its site EUI of 9.2 kBtu/ft² is about 88% below the average of 79.6 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 87% below the group average of 5.5 kgCO₂e/ft².
At 106,986 sq ft, it is about 25% above the average floor area of 85,583 sq ft for those buildings. It was built in 1967, 21 years later than the group's average year built (1947). Across all 24 jurisdictions BuildingCensus covers, the 702 residence hall/dormitory buildings average an ENERGY STAR score of 70 and a site EUI of 70.7 kBtu/ft².
How has 423 West 120th Street's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 423 West 120th Street, covering report years 2022–2023. Site EUI moved from 56.9 kBtu/ft² (2022) to 9.2 kBtu/ft² (2023), a 84% decrease. Reported emissions went from 340 tCO₂e to 75 tCO₂e over the same span (down 78%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. 423 West 120th Street's 9.2 kBtu/ft² across 106,986 sq ft works out to about 1 billion Btu (288 MWh-equivalent) in 2023. Its source EUI of 16.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 120,993 kWh of electricity and 5,719 therms of natural gas for the year.
Which law requires 423 West 120th Street to report its energy use?
423 West 120th 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 2023 disclosure (source record nyc:2809867:2023). 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 residence hall/dormitory buildings in New York City
- Wien Hall· 106,655 sq ft · score 100 (A)
- WCMC Olin Hall· 105,477 sq ft · EUI 86.3 kBtu/ft²
- Hollis Hall· 103,840 sq ft
- Barnard Cathedral Gardens· 103,699 sq ft · score 52 (D)
- RH. Martyrs Court· 101,504 sq ft
- RH. Martyrs Court· 101,504 sq ft
- Residence Hall/Dormitory buildings in New York City· 343 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 423 West 120th Street's energy grade?
423 West 120th Street scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 423 West 120th Street use?
Its 2023 site energy-use intensity was 9.2 kBtu/ft² (16.4 kBtu/ft² source) across 106,986 sq ft, including 120,993 kWh of electricity and 5,719 therms of natural gas.
What are 423 West 120th Street's carbon emissions?
423 West 120th Street reported 75 tCO₂e of greenhouse-gas emissions (0.7 kgCO₂e/ft²) for 2023.
Where is 423 West 120th Street?
423 West 120th Street is in New York City, New York 10027. Its coordinates are 40.80916, -73.95876 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 423 West 120th Street and when was it built?
423 West 120th Street has 106,986 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1967 as its year built. It is classed as residence hall/dormitory.
Is 423 West 120th Street covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “423 West 120th Street, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/423-west-120th-street-7df1b1a7 (data as of October 2, 2026).