Citadel_1 Prospect Park Southwest
Multifamily Housing in New York City, NY · 1 PROSPECT PARK SW · 11215
At a glance
Citadel_1 Prospect Park Southwest is a 72,582-square-foot multifamily housing building at 1 PROSPECT PARK SW in New York City, New York, built in 1970. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 60.9 kBtu/ft² and 316 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 60.9 kBtu/ft² |
| Source EUI | 93.0 kBtu/ft² |
| GHG emissions | 316 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 354,761 kWh |
| Natural gas | 29,348 therms |
| Water use | 2,228 kgal |
| Gross floor area | 72,582 sq ft |
| Source record | nyc:3120685:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 60.9 kBtu/ft² | 316 tCO₂e | |
| 2023 | 85 | +1 | 59.2 kBtu/ft² | 287 tCO₂e |
| 2022 | 84 | 67.2 kBtu/ft² | 284 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
- 1 PROSPECT PARK SW
- City
- New York City
- State
- New York
- ZIP
- 11215
- Coordinates
- 40.66076, -73.97940
Within ~1 km
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How does Citadel_1 Prospect Park Southwest 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 60.9 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 4.3 kgCO₂e/ft² is about 16% below the group average of 5.2 kgCO₂e/ft².
At 72,582 sq ft, it is about 28% below the average floor area of 100,951 sq ft for those buildings. It was built in 1970, 18 years later 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 Citadel_1 Prospect Park Southwest's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Citadel_1 Prospect Park Southwest, covering report years 2022–2024. Its ENERGY STAR score went from 84 in 2022 to 85 in 2023 (+1 points). Site EUI moved from 67.2 kBtu/ft² (2022) to 60.9 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 284 tCO₂e to 316 tCO₂e over the same span (up 11%).
What does a site EUI of 60.9 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. Citadel_1 Prospect Park Southwest's 60.9 kBtu/ft² across 72,582 sq ft works out to about 4.4 billion Btu (1,295 MWh-equivalent) in 2024. Its source EUI of 93.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 354,761 kWh of electricity, 29,348 therms of natural gas and 2,228 thousand gallons of water for the year.
Which law requires Citadel_1 Prospect Park Southwest to report its energy use?
Citadel_1 Prospect Park Southwest 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:3120685:2024). 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
- 3100-3108 Kingsbridge Avenue· 72,580 sq ft · score 70 (B)
- 10 West 86th Street· 72,561 sq ft · score 100 (A)
- Dongan Tower Condominium 1 LLC· 72,555 sq ft · EUI 34.4 kBtu/ft²
- JJS: 201 West Kingsbridge Road· 72,538 sq ft · score 34 (D)
- 400 East 17th Street· 72,534 sq ft · score 84 (B)
- 1160 Evergreen Ave· 72,506 sq ft · score 79 (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 Citadel_1 Prospect Park Southwest's energy grade?
Citadel_1 Prospect Park Southwest did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 60.9 kBtu/ft².
How much energy does Citadel_1 Prospect Park Southwest use?
Its 2024 site energy-use intensity was 60.9 kBtu/ft² (93.0 kBtu/ft² source) across 72,582 sq ft, including 354,761 kWh of electricity and 29,348 therms of natural gas.
What are Citadel_1 Prospect Park Southwest's carbon emissions?
Citadel_1 Prospect Park Southwest reported 316 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is Citadel_1 Prospect Park Southwest?
Citadel_1 Prospect Park Southwest is at 1 PROSPECT PARK SW, in New York City, New York 11215. Its coordinates are 40.66076, -73.97940 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Citadel_1 Prospect Park Southwest and when was it built?
Citadel_1 Prospect Park Southwest has 72,582 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1970 as its year built. It is classed as multifamily housing.
Is Citadel_1 Prospect Park Southwest 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, “Citadel_1 Prospect Park Southwest, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/citadel-1-prospect-park-southwest-5c045190 (data as of October 2, 2026).