55 Prospect Street
Office in New York City, NY · 11201
At a glance
55 Prospect Street is a 254,356-square-foot office building in New York City, New York, built in 1967. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 67 out of 100 (grade C), a site energy-use intensity of 54.5 kBtu/ft² and 1,250 tCO₂e of greenhouse-gas emissions. That score is higher than 31% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 67 (band C) |
| Site EUI | 54.5 kBtu/ft² |
| Source EUI | 114.3 kBtu/ft² |
| GHG emissions | 1,250 tCO₂e |
| GHG intensity | 4.9 kgCO₂e/ft² |
| Electricity | 2,430,289 kWh |
| Natural gas | 55,649 therms |
| Water use | 4,497 kgal |
| Gross floor area | 254,356 sq ft |
| Source record | nyc:4407924:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 67 | -8 | 54.5 kBtu/ft² | 1,250 tCO₂e |
| 2023 | 75 | -1 | 45.7 kBtu/ft² | 1,025 tCO₂e |
| 2022 | 76 | 48.2 kBtu/ft² | 876 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
- 55 Prospect Street
- City
- New York City
- State
- New York
- ZIP
- 11201
- Coordinates
- 40.70070, -73.98846
Within ~1 km
Nearby benchmarked buildings
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- 160 Front Street AKA 135 York Avenuescore 100
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- JPMorgan Chase-4CMCscore 53
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- FARRAGUTscore 36
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See also: most efficient in New York City · biggest emitters
How does 55 Prospect Street compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. 55 Prospect Street's ENERGY STAR score of 67 compares with an average of 72 across the 2,519 that report a score; it scores higher than 31% of them and lower than 68%. Its site EUI of 54.5 kBtu/ft² is about 16% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.9 kgCO₂e/ft² is about 15% below the group average of 5.8 kgCO₂e/ft².
At 254,356 sq ft, it is about 24% above the average floor area of 205,440 sq ft for those buildings. It was built in 1967, 27 years later than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 55 Prospect Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 55 Prospect Street, covering report years 2022–2024. Its ENERGY STAR score went from 76 in 2022 to 67 in 2024 (-9 points); its best year on file was 2022, at 76. Site EUI moved from 48.2 kBtu/ft² (2022) to 54.5 kBtu/ft² (2024), an 13% increase. Reported emissions went from 876 tCO₂e to 1,250 tCO₂e over the same span (up 43%).
What does an ENERGY STAR score of 67 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 67 means the building performs better than about 67% of its national peers. BuildingCensus bands the score into report-card grades; 67 falls in band C — below median (55–69). It sits 8 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. 55 Prospect Street's 54.5 kBtu/ft² across 254,356 sq ft works out to about 13.9 billion Btu (4,063 MWh-equivalent) in 2024. Its source EUI of 114.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,430,289 kWh of electricity, 55,649 therms of natural gas and 4,497 thousand gallons of water for the year.
Which law requires 55 Prospect Street to report its energy use?
55 Prospect Street 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:4407924:2024). 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 office buildings in New York City
- 355 Lexington LLC· 253,733 sq ft · score 88 (A)
- Ivy Cross Island Plaza, LLC· 253,563 sq ft
- 19 West 44th Street· 253,442 sq ft · score 68 (C)
- URA Group - 1212 Avenue of The Americas· 253,300 sq ft · score 87 (A)
- 1212 Avenue of the Americas· 253,300 sq ft · score 91 (A)
- 435 Hudson - BM Portal (423 HUDSON STREET)· 252,765 sq ft · score 69 (C)
- Office buildings in New York City· 3,384 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 55 Prospect Street's energy grade?
55 Prospect Street scores 67 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 55 Prospect Street use?
Its 2024 site energy-use intensity was 54.5 kBtu/ft² (114.3 kBtu/ft² source) across 254,356 sq ft, including 2,430,289 kWh of electricity and 55,649 therms of natural gas.
What are 55 Prospect Street's carbon emissions?
55 Prospect Street reported 1,250 tCO₂e of greenhouse-gas emissions (4.9 kgCO₂e/ft²) for 2024.
Where is 55 Prospect Street?
55 Prospect Street is in New York City, New York 11201. Its coordinates are 40.70070, -73.98846 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 55 Prospect Street and when was it built?
55 Prospect Street has 254,356 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1967 as its year built. It is classed as office.
Is 55 Prospect Street 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, “55 Prospect Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/55-prospect-street-cb141008 (data as of October 2, 2026).