155 Prospect Ave
Multifamily Housing in New York City, NY · 155 Prospect Avenue · 10301
At a glance
155 Prospect Ave is a 25,660-square-foot multifamily housing building at 155 Prospect Avenue in New York City, New York, built in 1930. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 23 out of 100 (grade D), a site energy-use intensity of 105.1 kBtu/ft² and 162 tCO₂e of greenhouse-gas emissions. That score is higher than 13% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 23 (band D) |
| Site EUI | 105.1 kBtu/ft² |
| Source EUI | 130.8 kBtu/ft² |
| GHG emissions | 162 tCO₂e |
| GHG intensity | 6.3 kgCO₂e/ft² |
| Electricity | 87,842 kWh |
| Natural gas | 23,981 therms |
| Gross floor area | 25,660 sq ft |
| Source record | nyc:54202593:2024 |
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
- 155 Prospect Avenue
- City
- New York City
- State
- New York
- ZIP
- 10301
- Coordinates
- 40.63951, -74.09265
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 155 Prospect Ave 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. 155 Prospect Ave's ENERGY STAR score of 23 compares with an average of 63 across the 22,829 that report a score; it scores higher than 13% of them and lower than 86%. Its site EUI of 105.1 kBtu/ft² is about 40% 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 6.3 kgCO₂e/ft² is about 21% above the group average of 5.2 kgCO₂e/ft².
At 25,660 sq ft, it is about 75% below the average floor area of 100,951 sq ft for those buildings. It was built in 1930, 22 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 23 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 23 means the building performs better than about 23% of its national peers. BuildingCensus bands the score into report-card grades; 23 falls in band D — lowest band (1–54). It sits 52 points below 75, the threshold for ENERGY STAR certification. 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. 155 Prospect Ave's 105.1 kBtu/ft² across 25,660 sq ft works out to about 2.7 billion Btu (790 MWh-equivalent) in 2024. Its source EUI of 130.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 87,842 kWh of electricity and 23,981 therms of natural gas for the year.
Which law requires 155 Prospect Ave to report its energy use?
155 Prospect Ave 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:54202593:2024). 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
- 105 - C3 345 West 30th Street· 25,657 sq ft · score 78 (B)
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- 106 Ross Street· 25,651 sq ft · EUI 72.0 kBtu/ft²
- Hirsh - 106 Ross Street· 25,651 sq ft · EUI 72.0 kBtu/ft²
- 106 Ross Condo Associate· 25,651 sq ft · score 100 (A)
- Hour Apartment HDFC· 25,650 sq ft · EUI 65.3 kBtu/ft²
- 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 155 Prospect Ave's energy grade?
155 Prospect Ave scores 23 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 155 Prospect Ave use?
Its 2024 site energy-use intensity was 105.1 kBtu/ft² (130.8 kBtu/ft² source) across 25,660 sq ft, including 87,842 kWh of electricity and 23,981 therms of natural gas.
What are 155 Prospect Ave's carbon emissions?
155 Prospect Ave reported 162 tCO₂e of greenhouse-gas emissions (6.3 kgCO₂e/ft²) for 2024.
Where is 155 Prospect Ave?
155 Prospect Ave is at 155 Prospect Avenue, in New York City, New York 10301. Its coordinates are 40.63951, -74.09265 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 155 Prospect Ave and when was it built?
155 Prospect Ave has 25,660 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1930 as its year built. It is classed as multifamily housing.
Is 155 Prospect Ave 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, “155 Prospect Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/155-prospect-ave-e506fe6f (data as of October 2, 2026).