143-145 Owners Corporation (143 West 20th Street)
Multifamily Housing in New York City, NY · 143 West 20th Street · 10011
At a glance
143-145 Owners Corporation (143 West 20th Street) is a 53,820-square-foot multifamily housing building in New York City, New York, built in 1909. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 50.3 kBtu/ft² and 187 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 50.3 kBtu/ft² |
| Source EUI | 75.7 kBtu/ft² |
| GHG emissions | 187 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 206,105 kWh |
| Natural gas | 20,044 therms |
| Water use | 592 kgal |
| Gross floor area | 53,820 sq ft |
| Source record | nyc:4630104:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 50.3 kBtu/ft² | 187 tCO₂e | |
| 2023 | — | 52.2 kBtu/ft² | 175 tCO₂e | |
| 2022 | — | 50.6 kBtu/ft² | 152 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
- 143 West 20th Street
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.74179, -73.99593
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 143-145 Owners Corporation (143 West 20th Street) 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 50.3 kBtu/ft² is about 33% 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 3.5 kgCO₂e/ft² is about 33% below the group average of 5.2 kgCO₂e/ft².
At 53,820 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1909, 43 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 143-145 Owners Corporation (143 West 20th Street)'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 143-145 Owners Corporation (143 West 20th Street), covering report years 2022–2024. Site EUI moved from 50.6 kBtu/ft² (2022) to 50.3 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 152 tCO₂e to 187 tCO₂e over the same span (up 23%).
What does a site EUI of 50.3 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. 143-145 Owners Corporation (143 West 20th Street)'s 50.3 kBtu/ft² across 53,820 sq ft works out to about 2.7 billion Btu (793 MWh-equivalent) in 2024. Its source EUI of 75.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 206,105 kWh of electricity, 20,044 therms of natural gas and 592 thousand gallons of water for the year.
Which law requires 143-145 Owners Corporation (143 West 20th Street) to report its energy use?
143-145 Owners Corporation (143 West 20th 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 2024 disclosure (source record nyc:4630104:2024). 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
- 430 West 116 St· 53,817 sq ft · EUI 9.8 kBtu/ft²
- Samson - 499 Ft. Washington· 53,816 sq ft · score 60 (C)
- 1055 Walton Avenue· 53,815 sq ft · score 49 (D)
- TKR - 55 Poplar Street· 53,804 sq ft · score 70 (B)
- 26-02 4th Street· 53,800 sq ft · score 90 (A)
- ALL STATE REALTY ASSOCIATES· 53,800 sq ft · score 78 (B)
- 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 143-145 Owners Corporation (143 West 20th Street)'s energy grade?
143-145 Owners Corporation (143 West 20th Street) did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 50.3 kBtu/ft².
How much energy does 143-145 Owners Corporation (143 West 20th Street) use?
Its 2024 site energy-use intensity was 50.3 kBtu/ft² (75.7 kBtu/ft² source) across 53,820 sq ft, including 206,105 kWh of electricity and 20,044 therms of natural gas.
What are 143-145 Owners Corporation (143 West 20th Street)'s carbon emissions?
143-145 Owners Corporation (143 West 20th Street) reported 187 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2024.
Where is 143-145 Owners Corporation (143 West 20th Street)?
143-145 Owners Corporation (143 West 20th Street) is in New York City, New York 10011. Its coordinates are 40.74179, -73.99593 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 143-145 Owners Corporation (143 West 20th Street) and when was it built?
143-145 Owners Corporation (143 West 20th Street) has 53,820 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1909 as its year built. It is classed as multifamily housing.
Is 143-145 Owners Corporation (143 West 20th Street) 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, “143-145 Owners Corporation (143 West 20th Street), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/143-145-owners-corporation-143-west-20th-street-89661b81 (data as of October 2, 2026).