55 W. 39th St.
Office in New York City, NY · 55 West 39th Street · 10018
At a glance
55 W. 39th St. is a 124,438-square-foot office building at 55 West 39th Street in New York City, New York, built in 1926. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 84 out of 100 (grade B), a site energy-use intensity of 57.2 kBtu/ft² and 642 tCO₂e of greenhouse-gas emissions. That score is higher than 61% 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 | 84 (band B) |
| Site EUI | 57.2 kBtu/ft² |
| Source EUI | 113.5 kBtu/ft² |
| GHG emissions | 642 tCO₂e |
| GHG intensity | 5.2 kgCO₂e/ft² |
| Electricity | 1,020,455 kWh |
| Water use | 1,246 kgal |
| Gross floor area | 124,438 sq ft |
| Source record | nyc:2683362:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 84 | +10 | 57.2 kBtu/ft² | 642 tCO₂e |
| 2023 | 74 | -3 | 67.7 kBtu/ft² | 660 tCO₂e |
| 2022 | 77 | 63.4 kBtu/ft² | 548 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 55 West 39th Street
- City
- New York City
- State
- New York
- ZIP
- 10018
- Coordinates
- 40.75231, -73.98399
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 55 W. 39th St. 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 W. 39th St.'s ENERGY STAR score of 84 compares with an average of 72 across the 2,519 that report a score; it scores higher than 61% of them and lower than 37%. Its site EUI of 57.2 kBtu/ft² is about 11% 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 5.2 kgCO₂e/ft² is about 11% below the group average of 5.8 kgCO₂e/ft².
At 124,438 sq ft, it is about 39% below the average floor area of 205,440 sq ft for those buildings. It was built in 1926, 14 years earlier 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 W. 39th St.'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 55 W. 39th St., covering report years 2022–2024. Its ENERGY STAR score went from 77 in 2022 to 84 in 2024 (+7 points). Site EUI moved from 63.4 kBtu/ft² (2022) to 57.2 kBtu/ft² (2024), a 10% decrease. Reported emissions went from 548 tCO₂e to 642 tCO₂e over the same span (up 17%).
What does an ENERGY STAR score of 84 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 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 falls in band B — above median (70–84). 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. 55 W. 39th St.'s 57.2 kBtu/ft² across 124,438 sq ft works out to about 7.1 billion Btu (2,086 MWh-equivalent) in 2024. Its source EUI of 113.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,020,455 kWh of electricity and 1,246 thousand gallons of water for the year.
Which law requires 55 W. 39th St. to report its energy use?
55 W. 39th St. 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:2683362:2024). 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
- Justin Management: 153 W 27th St· 124,040 sq ft · score 96 (A)
- Mink Building Parent· 124,001 sq ft · EUI 48.0 kBtu/ft²
- 43-01 21st Street LLC· 124,000 sq ft · score 91 (A)
- Mink Building· 124,000 sq ft · score 84 (B)
- Rockrose - 43-01 21st st· 124,000 sq ft · score 91 (A)
- 43-01 21st STREET LLC c/o Rockrose Development Corp.· 124,000 sq ft · score 88 (A)
- 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 W. 39th St.'s energy grade?
55 W. 39th St. scores 84 out of 100 on ENERGY STAR — band B, above median (70–84) — 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 W. 39th St. use?
Its 2024 site energy-use intensity was 57.2 kBtu/ft² (113.5 kBtu/ft² source) across 124,438 sq ft, including 1,020,455 kWh of electricity.
What are 55 W. 39th St.'s carbon emissions?
55 W. 39th St. reported 642 tCO₂e of greenhouse-gas emissions (5.2 kgCO₂e/ft²) for 2024.
Where is 55 W. 39th St.?
55 W. 39th St. is at 55 West 39th Street, in New York City, New York 10018. Its coordinates are 40.75231, -73.98399 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 55 W. 39th St. and when was it built?
55 W. 39th St. has 124,438 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as office.
Is 55 W. 39th St. 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 W. 39th St., New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/55-w-39th-st-28dc6cde (data as of October 2, 2026).