Cornerstone: 32 W 20th St
Multifamily Housing in New York City, NY · 32 W 20th St · 10011
At a glance
Cornerstone: 32 W 20th St is a 44,379-square-foot multifamily housing building in New York City, New York, built in 1900. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 56.5 kBtu/ft² and 182 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 56.5 kBtu/ft² |
| Source EUI | 90.6 kBtu/ft² |
| GHG emissions | 182 tCO₂e |
| GHG intensity | 4.1 kgCO₂e/ft² |
| Electricity | 232,460 kWh |
| Natural gas | 17,145 therms |
| Gross floor area | 44,379 sq ft |
| Source record | nyc:6282562:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 56.5 kBtu/ft² | 182 tCO₂e | |
| 2023 | — | 52.3 kBtu/ft² | 167 tCO₂e | |
| 2022 | — | 53.0 kBtu/ft² | 149 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
- 32 W 20th St
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.74017, -73.99214
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Cornerstone: 32 W 20th St compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 56.5 kBtu/ft² is about 25% below the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.1 kgCO₂e/ft² is about 21% below the group average of 5.2 kgCO₂e/ft².
At 44,379 sq ft, it is about 56% below the average floor area of 100,951 sq ft for those buildings. It was built in 1900, 52 years earlier than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Cornerstone: 32 W 20th St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Cornerstone: 32 W 20th St, covering report years 2022–2024. Site EUI moved from 53.0 kBtu/ft² (2022) to 56.5 kBtu/ft² (2024), an 7% increase. Reported emissions went from 149 tCO₂e to 182 tCO₂e over the same span (up 23%).
What does a site EUI of 56.5 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. Cornerstone: 32 W 20th St's 56.5 kBtu/ft² across 44,379 sq ft works out to about 2.5 billion Btu (735 MWh-equivalent) in 2024. Its source EUI of 90.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 232,460 kWh of electricity and 17,145 therms of natural gas for the year.
Which law requires Cornerstone: 32 W 20th St to report its energy use?
Cornerstone: 32 W 20th St 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:6282562:2024). 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 multifamily housing buildings in New York City
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- Multifamily Housing buildings in New York City· 33,022 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 Cornerstone: 32 W 20th St's energy grade?
Cornerstone: 32 W 20th St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 56.5 kBtu/ft².
How much energy does Cornerstone: 32 W 20th St use?
Its 2024 site energy-use intensity was 56.5 kBtu/ft² (90.6 kBtu/ft² source) across 44,379 sq ft, including 232,460 kWh of electricity and 17,145 therms of natural gas.
What are Cornerstone: 32 W 20th St's carbon emissions?
Cornerstone: 32 W 20th St reported 182 tCO₂e of greenhouse-gas emissions (4.1 kgCO₂e/ft²) for 2024.
Where is Cornerstone: 32 W 20th St?
Cornerstone: 32 W 20th St is in New York City, New York 10011. Its coordinates are 40.74017, -73.99214 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Cornerstone: 32 W 20th St and when was it built?
Cornerstone: 32 W 20th St has 44,379 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1900 as its year built. It is classed as multifamily housing.
Is Cornerstone: 32 W 20th St 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, “Cornerstone: 32 W 20th St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/cornerstone-32-w-20th-st-1b2ded9b (data as of October 2, 2026).