227 W 145 St
Multifamily Housing in New York City, NY · 10030
At a glance
227 W 145 St is a 15,942-square-foot multifamily housing building in New York City, New York, built in 1920. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 134.6 kBtu/ft² and 139 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 134.6 kBtu/ft² |
| Source EUI | 185.5 kBtu/ft² |
| GHG emissions | 139 tCO₂e |
| GHG intensity | 8.7 kgCO₂e/ft² |
| Electricity | 117,922 kWh |
| Natural gas | 17,430 therms |
| Gross floor area | 15,942 sq ft |
| Source record | nyc:14764488:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 134.6 kBtu/ft² | 139 tCO₂e | |
| 2023 | — | 136.3 kBtu/ft² | 136 tCO₂e | |
| 2022 | — | 147.4 kBtu/ft² | 137 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
- 227 W 145 St
- City
- New York City
- State
- New York
- ZIP
- 10030
- Coordinates
- 40.82207, -73.94007
Within ~1 km
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How does 227 W 145 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 134.6 kBtu/ft² is about 80% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.7 kgCO₂e/ft² is about 68% above the group average of 5.2 kgCO₂e/ft².
At 15,942 sq ft, it is about 84% below the average floor area of 100,951 sq ft for those buildings. It was built in 1920, 32 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 227 W 145 St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 227 W 145 St, covering report years 2022–2024. Site EUI moved from 147.4 kBtu/ft² (2022) to 134.6 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 137 tCO₂e to 139 tCO₂e over the same span (up 2%).
What does a site EUI of 134.6 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. 227 W 145 St's 134.6 kBtu/ft² across 15,942 sq ft works out to about 2.1 billion Btu (629 MWh-equivalent) in 2024. Its source EUI of 185.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 117,922 kWh of electricity and 17,430 therms of natural gas for the year.
Which law requires 227 W 145 St to report its energy use?
227 W 145 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:14764488:2024). 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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Frequently asked questions
What is 227 W 145 St's energy grade?
227 W 145 St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 134.6 kBtu/ft².
How much energy does 227 W 145 St use?
Its 2024 site energy-use intensity was 134.6 kBtu/ft² (185.5 kBtu/ft² source) across 15,942 sq ft, including 117,922 kWh of electricity and 17,430 therms of natural gas.
What are 227 W 145 St's carbon emissions?
227 W 145 St reported 139 tCO₂e of greenhouse-gas emissions (8.7 kgCO₂e/ft²) for 2024.
Where is 227 W 145 St?
227 W 145 St is in New York City, New York 10030. Its coordinates are 40.82207, -73.94007 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 227 W 145 St and when was it built?
227 W 145 St has 15,942 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1920 as its year built. It is classed as multifamily housing.
Is 227 W 145 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, “227 W 145 St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/227-w-145-st-55a79de7 (data as of October 2, 2026).