40 Prospect Park West
Multifamily Housing in New York City, NY · 40 Prospect Park W. · 11215
At a glance
40 Prospect Park West is a 78,431-square-foot multifamily housing building at 40 Prospect Park W. in New York City, New York, built in 1942. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 60.5 kBtu/ft² and 297 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 60.5 kBtu/ft² |
| Source EUI | 79.7 kBtu/ft² |
| GHG emissions | 297 tCO₂e |
| GHG intensity | 3.8 kgCO₂e/ft² |
| Electricity | 213,678 kWh |
| Natural gas | 40,125 therms |
| Gross floor area | 78,431 sq ft |
| Source record | nyc:56988694:2024 |
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
- 40 Prospect Park W.
- City
- New York City
- State
- New York
- ZIP
- 11215
- Coordinates
- 40.66984, -73.97249
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 40 Prospect Park West 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 60.5 kBtu/ft² is about 19% 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 3.8 kgCO₂e/ft² is about 27% below the group average of 5.2 kgCO₂e/ft².
At 78,431 sq ft, it is about 22% below the average floor area of 100,951 sq ft for those buildings. It was built in 1942, 10 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.
What does a site EUI of 60.5 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. 40 Prospect Park West's 60.5 kBtu/ft² across 78,431 sq ft works out to about 4.7 billion Btu (1,391 MWh-equivalent) in 2024. Its source EUI of 79.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 213,678 kWh of electricity and 40,125 therms of natural gas for the year.
Which law requires 40 Prospect Park West to report its energy use?
40 Prospect Park West 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:56988694:2024). 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
- AKAM - 301 East 45th Street· 78,428 sq ft · score 47 (D)
- 629 West 173rd Street· 78,425 sq ft · score 100 (A)
- 4101 Broadway AKA 629 West 173rd Street· 78,425 sq ft · score 100 (A)
- 3210 Avenue H· 78,420 sq ft · score 31 (D)
- 3052 Kingsbridge· 78,400 sq ft · score 67 (C)
- 4211 Ave K· 78,396 sq ft · score 37 (D)
- 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 40 Prospect Park West's energy grade?
40 Prospect Park West did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 60.5 kBtu/ft².
How much energy does 40 Prospect Park West use?
Its 2024 site energy-use intensity was 60.5 kBtu/ft² (79.7 kBtu/ft² source) across 78,431 sq ft, including 213,678 kWh of electricity and 40,125 therms of natural gas.
What are 40 Prospect Park West's carbon emissions?
40 Prospect Park West reported 297 tCO₂e of greenhouse-gas emissions (3.8 kgCO₂e/ft²) for 2024.
Where is 40 Prospect Park West?
40 Prospect Park West is at 40 Prospect Park W., in New York City, New York 11215. Its coordinates are 40.66984, -73.97249 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 40 Prospect Park West and when was it built?
40 Prospect Park West has 78,431 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1942 as its year built. It is classed as multifamily housing.
Is 40 Prospect Park West 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, “40 Prospect Park West, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/40-prospect-park-west-b66e038a (data as of October 2, 2026).