425 Prospect Place
Multifamily Housing in New York City, NY · 425 PROSPECT PL · 11238
At a glance
425 Prospect Place is a 54,315-square-foot multifamily housing building at 425 PROSPECT PL in New York City, New York, built in 1924. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 54.3 kBtu/ft² and 183 tCO₂e of greenhouse-gas emissions. That score is higher than 88% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 54.3 kBtu/ft² |
| Source EUI | 72.1 kBtu/ft² |
| GHG emissions | 183 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 136,854 kWh |
| Natural gas | 24,820 therms |
| Water use | 1,609 kgal |
| Gross floor area | 54,315 sq ft |
| Source record | nyc:3541724:2023 |
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
- 425 PROSPECT PL
- City
- New York City
- State
- New York
- ZIP
- 11238
- Coordinates
- 40.67622, -73.96194
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 425 Prospect Place 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. 425 Prospect Place's ENERGY STAR score of 99 compares with an average of 63 across the 22,829 that report a score; it scores higher than 88% of them and lower than 10%. Its site EUI of 54.3 kBtu/ft² is about 28% 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 3.4 kgCO₂e/ft² is about 35% below the group average of 5.2 kgCO₂e/ft².
At 54,315 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1924, 28 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 an ENERGY STAR score of 99 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In New York City, 43% of scored buildings are at 75 or above.
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. 425 Prospect Place's 54.3 kBtu/ft² across 54,315 sq ft works out to about 2.9 billion Btu (864 MWh-equivalent) in 2023. Its source EUI of 72.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 136,854 kWh of electricity, 24,820 therms of natural gas and 1,609 thousand gallons of water for the year.
Which law requires 425 Prospect Place to report its energy use?
425 Prospect Place 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 2023 disclosure (source record nyc:3541724:2023). 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
- 456 West 148th Street· 54,305 sq ft · score 86 (A)
- 359 Hendrix Street (Parent Property)· 54,300 sq ft · score 74 (B)
- Gold - 359 Hendrix St· 54,300 sq ft · score 76 (B)
- 576 EASTERN PARKWAY· 54,300 sq ft · score 57 (C)
- 1530 East 18th Street· 54,300 sq ft · score 59 (C)
- 60 Tiffany Place Condominium· 54,300 sq ft · score 58 (C)
- 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 425 Prospect Place's energy grade?
425 Prospect Place scores 99 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 425 Prospect Place use?
Its 2023 site energy-use intensity was 54.3 kBtu/ft² (72.1 kBtu/ft² source) across 54,315 sq ft, including 136,854 kWh of electricity and 24,820 therms of natural gas.
What are 425 Prospect Place's carbon emissions?
425 Prospect Place reported 183 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2023.
Where is 425 Prospect Place?
425 Prospect Place is at 425 PROSPECT PL, in New York City, New York 11238. Its coordinates are 40.67622, -73.96194 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 425 Prospect Place and when was it built?
425 Prospect Place has 54,315 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1924 as its year built. It is classed as multifamily housing.
Is 425 Prospect Place covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “425 Prospect Place, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/425-prospect-place-db00e08b (data as of October 2, 2026).