Cornerstone: 43 Clarkson St
Multifamily Housing in New York City, NY · 43 Clarkson St · 10014
At a glance
Cornerstone: 43 Clarkson St is a 46,876-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 59.3 kBtu/ft² and 218 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 59.3 kBtu/ft² |
| Source EUI | 104.8 kBtu/ft² |
| GHG emissions | 218 tCO₂e |
| GHG intensity | 4.7 kgCO₂e/ft² |
| Electricity | 333,940 kWh |
| Natural gas | 16,399 therms |
| Gross floor area | 46,876 sq ft |
| Source record | nyc:15612891:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 59.3 kBtu/ft² | 218 tCO₂e | |
| 2023 | — | 60.8 kBtu/ft² | 217 tCO₂e | |
| 2022 | — | 63.2 kBtu/ft² | 194 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
- 43 Clarkson St
- City
- New York City
- State
- New York
- ZIP
- 10014
- Coordinates
- 40.72959, -74.00789
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Cornerstone: 43 Clarkson 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 59.3 kBtu/ft² is about 21% 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 4.7 kgCO₂e/ft² is about 10% below the group average of 5.2 kgCO₂e/ft².
At 46,876 sq ft, it is about half of 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: 43 Clarkson St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Cornerstone: 43 Clarkson St, covering report years 2022–2024. Site EUI moved from 63.2 kBtu/ft² (2022) to 59.3 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 194 tCO₂e to 218 tCO₂e over the same span (up 13%).
What does a site EUI of 59.3 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: 43 Clarkson St's 59.3 kBtu/ft² across 46,876 sq ft works out to about 2.8 billion Btu (815 MWh-equivalent) in 2024. Its source EUI of 104.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 333,940 kWh of electricity and 16,399 therms of natural gas for the year.
Which law requires Cornerstone: 43 Clarkson St to report its energy use?
Cornerstone: 43 Clarkson 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:15612891:2024). 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.
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- All New York City benchmarked buildings· Local Law 84 (LL84)
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- Biggest emitters in New York City
Frequently asked questions
What is Cornerstone: 43 Clarkson St's energy grade?
Cornerstone: 43 Clarkson St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 59.3 kBtu/ft².
How much energy does Cornerstone: 43 Clarkson St use?
Its 2024 site energy-use intensity was 59.3 kBtu/ft² (104.8 kBtu/ft² source) across 46,876 sq ft, including 333,940 kWh of electricity and 16,399 therms of natural gas.
What are Cornerstone: 43 Clarkson St's carbon emissions?
Cornerstone: 43 Clarkson St reported 218 tCO₂e of greenhouse-gas emissions (4.7 kgCO₂e/ft²) for 2024.
Where is Cornerstone: 43 Clarkson St?
Cornerstone: 43 Clarkson St is in New York City, New York 10014. Its coordinates are 40.72959, -74.00789 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Cornerstone: 43 Clarkson St and when was it built?
Cornerstone: 43 Clarkson St has 46,876 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: 43 Clarkson 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: 43 Clarkson St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/cornerstone-43-clarkson-st-1f0652b2 (data as of October 2, 2026).