511 West 25th Street
Office in New York City, NY · 10001
At a glance
511 West 25th Street is a 89,436-square-foot office building in New York City, New York, built in 1917. In its 2023 New York City benchmarking disclosure it reported a site energy-use intensity of 38.7 kBtu/ft² and 310 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 38.7 kBtu/ft² |
| Source EUI | 68.7 kBtu/ft² |
| GHG emissions | 310 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 432,641 kWh |
| Natural gas | 7 therms |
| Water use | 98 kgal |
| Gross floor area | 89,436 sq ft |
| Source record | nyc:4371810:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | — | 38.7 kBtu/ft² | 310 tCO₂e | |
| 2022 | 68 | 66.1 kBtu/ft² | 472 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
- 511 West 25th Street
- City
- New York City
- State
- New York
- ZIP
- 10001
- Coordinates
- 40.74936, -74.00413
Within ~1 km
Nearby benchmarked buildings
- Hudson Yards Cogen Campusscore —
Other · 7,739,076 sq ft
- Manhattan Westscore —
Other · 4,153,954 sq ft
- 20-30 Hudson Yardsscore —
Office · 3,810,623 sq ft
- Penn Southscore 95
Multifamily Housing · 3,391,963 sq ft
- 50 Hudson Yardsscore 76
Office · 2,944,455 sq ft
- The Spiral - 66 Hudson Boulevardscore 82
Office · 2,830,000 sq ft
See also: most efficient in New York City · biggest emitters
How does 511 West 25th 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. Its site EUI of 38.7 kBtu/ft² is about 40% 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 3.5 kgCO₂e/ft² is about 40% below the group average of 5.8 kgCO₂e/ft².
At 89,436 sq ft, it is about 56% below the average floor area of 205,440 sq ft for those buildings. It was built in 1917, 23 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 511 West 25th Street's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 511 West 25th Street, covering report years 2022–2023. Site EUI moved from 66.1 kBtu/ft² (2022) to 38.7 kBtu/ft² (2023), a 41% decrease. Reported emissions went from 472 tCO₂e to 310 tCO₂e over the same span (down 34%).
What does a site EUI of 38.7 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. 511 West 25th Street's 38.7 kBtu/ft² across 89,436 sq ft works out to about 3.5 billion Btu (1,014 MWh-equivalent) in 2023. Its source EUI of 68.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 432,641 kWh of electricity, 7 therms of natural gas and 98 thousand gallons of water for the year.
Which law requires 511 West 25th Street to report its energy use?
511 West 25th 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 2023 disclosure (source record nyc:4371810:2023). 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 office buildings in New York City
- 38 East 32nd Street· 89,413 sq ft · score 90 (A)
- United Capital Corp - 424 E 147th St.· 89,311 sq ft · score 65 (C)
- Feil - 145 West 30th Street· 89,250 sq ft · score 98 (A)
- Treeline West LLC 177 Livingston St· 89,013 sq ft · score 70 (B)
- 177 Livingston Street (Treeline)· 89,013 sq ft · score 71 (B)
- 10 WEST 46 STREET· 88,931 sq ft · score 55 (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 511 West 25th Street's energy grade?
511 West 25th Street did not report an ENERGY STAR score in its 2023 disclosure, but its site energy-use intensity was 38.7 kBtu/ft².
How much energy does 511 West 25th Street use?
Its 2023 site energy-use intensity was 38.7 kBtu/ft² (68.7 kBtu/ft² source) across 89,436 sq ft, including 432,641 kWh of electricity and 7 therms of natural gas.
What are 511 West 25th Street's carbon emissions?
511 West 25th Street reported 310 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2023.
Where is 511 West 25th Street?
511 West 25th Street is in New York City, New York 10001. Its coordinates are 40.74936, -74.00413 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 511 West 25th Street and when was it built?
511 West 25th Street has 89,436 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1917 as its year built. It is classed as office.
Is 511 West 25th Street 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, “511 West 25th Street, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/511-west-25th-street-c0b85dd1 (data as of October 2, 2026).