Hayden Hall
Residence Hall/Dormitory in New York City, NY · 246 Mercer Street · 10012
At a glance
Hayden Hall is a 298,327-square-foot residence hall/dormitory at 246 Mercer Street in New York City, New York, built in 1980. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 7.7 kBtu/ft² and 235 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 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 7.7 kBtu/ft² |
| Source EUI | 18.8 kBtu/ft² |
| GHG emissions | 235 tCO₂e |
| GHG intensity | 0.8 kgCO₂e/ft² |
| Electricity | 533,834 kWh |
| Natural gas | 4,797 therms |
| Water use | 11,952 kgal |
| Gross floor area | 298,327 sq ft |
| Source record | nyc:2825704:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 7.7 kBtu/ft² | 235 tCO₂e |
| 2023 | 100 | ±0 | 6.8 kBtu/ft² | 209 tCO₂e |
| 2022 | 100 | 6.6 kBtu/ft² | 167 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
- 246 Mercer Street
- City
- New York City
- State
- New York
- ZIP
- 10012
- Coordinates
- 40.72828, -73.99550
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Hayden Hall 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. Hayden Hall'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 7.7 kBtu/ft² is about 90% 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 0.8 kgCO₂e/ft² is about 86% below the group average of 5.5 kgCO₂e/ft².
At 298,327 sq ft, it is about 249% above the average floor area of 85,583 sq ft for those buildings. It was built in 1980, 34 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 Hayden Hall's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Hayden Hall, covering report years 2022–2024. Its ENERGY STAR score was 100 in both 2022 and 2024. Site EUI moved from 6.6 kBtu/ft² (2022) to 7.7 kBtu/ft² (2024), an 17% increase. Reported emissions went from 167 tCO₂e to 235 tCO₂e over the same span (up 41%).
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. Hayden Hall's 7.7 kBtu/ft² across 298,327 sq ft works out to about 2.3 billion Btu (673 MWh-equivalent) in 2024. Its source EUI of 18.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 533,834 kWh of electricity, 4,797 therms of natural gas and 11,952 thousand gallons of water for the year.
Which law requires Hayden Hall to report its energy use?
Hayden Hall 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:2825704:2024). 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 residence hall/dormitory buildings in New York City
- LC. McMahon Hall· 296,147 sq ft
- LC. McMahon Hall· 296,147 sq ft
- Gramercy Green· 290,634 sq ft · score 81 (B)
- Willoughby Hall· 289,258 sq ft · score 74 (B)
- Tower 1, 52 Haven Ave, 60 Haven Ave· 268,810 sq ft · score 71 (B)
- International House - 500 Riverside Drive· 258,120 sq ft · score 100 (A)
- 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 Hayden Hall's energy grade?
Hayden Hall scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Hayden Hall use?
Its 2024 site energy-use intensity was 7.7 kBtu/ft² (18.8 kBtu/ft² source) across 298,327 sq ft, including 533,834 kWh of electricity and 4,797 therms of natural gas.
What are Hayden Hall's carbon emissions?
Hayden Hall reported 235 tCO₂e of greenhouse-gas emissions (0.8 kgCO₂e/ft²) for 2024.
Where is Hayden Hall?
Hayden Hall is at 246 Mercer Street, in New York City, New York 10012. Its coordinates are 40.72828, -73.99550 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Hayden Hall and when was it built?
Hayden Hall has 298,327 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1980 as its year built. It is classed as residence hall/dormitory.
Is Hayden Hall 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, “Hayden Hall, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/hayden-hall-0c831a26 (data as of October 2, 2026).