South Hall
College/University in New York City, NY · 221 Ryerson St · 11205
At a glance
South Hall is a 16,021-square-foot college/university building at 221 Ryerson St in New York City, New York, built in 1887. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 82.1 kBtu/ft² and 109 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 82.1 kBtu/ft² |
| Source EUI | 142.1 kBtu/ft² |
| GHG emissions | 109 tCO₂e |
| GHG intensity | 6.8 kgCO₂e/ft² |
| Electricity | 152,238 kWh |
| Natural gas | 4,503 therms |
| Water use | 349 kgal |
| Gross floor area | 16,021 sq ft |
| Source record | nyc:2691065:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 82.1 kBtu/ft² | 109 tCO₂e | |
| 2023 | — | 103.4 kBtu/ft² | 122 tCO₂e | |
| 2022 | — | 95.8 kBtu/ft² | 107 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
- 221 Ryerson St
- City
- New York City
- State
- New York
- ZIP
- 11205
- Coordinates
- 40.69098, -73.96447
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does South Hall 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 82.1 kBtu/ft² is about 13% 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 6.8 kgCO₂e/ft² is about 14% above the group average of 6.0 kgCO₂e/ft².
At 16,021 sq ft, it is about 92% below the average floor area of 202,329 sq ft for those buildings. It was built in 1887, 60 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 South Hall's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for South Hall, covering report years 2022–2024. Site EUI moved from 95.8 kBtu/ft² (2022) to 82.1 kBtu/ft² (2024), a 14% decrease. Reported emissions went from 107 tCO₂e to 109 tCO₂e over the same span (up 2%).
What does a site EUI of 82.1 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. South Hall's 82.1 kBtu/ft² across 16,021 sq ft works out to about 1.3 billion Btu (385 MWh-equivalent) in 2024. Its source EUI of 142.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 152,238 kWh of electricity, 4,503 therms of natural gas and 349 thousand gallons of water for the year.
Which law requires South Hall to report its energy use?
South 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:2691065:2024). 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
- CUNY SC > QC_499_Queens College: Heating Plant· 15,755 sq ft
- Film & Video· 15,479 sq ft · EUI 105.3 kBtu/ft²
- 31 West 4th Street / 240 Greene St (MC)· 15,415 sq ft · EUI 83.0 kBtu/ft²
- CUNY CC > BCC_370_Bronx CC: Brown Annex· 15,142 sq ft
- Public Safety Building / 7 Washington Place (MC)· 14,312 sq ft · EUI 0.0 kBtu/ft²
- Rabbinical College Bobover Yeshiva - 1577 48th Street - 3128807· 14,110 sq ft
- 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 South Hall's energy grade?
South Hall did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 82.1 kBtu/ft².
How much energy does South Hall use?
Its 2024 site energy-use intensity was 82.1 kBtu/ft² (142.1 kBtu/ft² source) across 16,021 sq ft, including 152,238 kWh of electricity and 4,503 therms of natural gas.
What are South Hall's carbon emissions?
South Hall reported 109 tCO₂e of greenhouse-gas emissions (6.8 kgCO₂e/ft²) for 2024.
Where is South Hall?
South Hall is at 221 Ryerson St, in New York City, New York 11205. Its coordinates are 40.69098, -73.96447 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is South Hall and when was it built?
South Hall has 16,021 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1887 as its year built. It is classed as college/university.
Is South 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, “South Hall, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/south-hall-e72271ff (data as of October 2, 2026).