11 West 42nd street
Office in New York City, NY · 10036
At a glance
11 West 42nd street is a 948,747-square-foot office building in New York City, New York, built in 1927. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 61 out of 100 (grade C), a site energy-use intensity of 71.8 kBtu/ft² and 6,328 tCO₂e of greenhouse-gas emissions. That score is higher than 25% 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 | 61 (band C) |
| Site EUI | 71.8 kBtu/ft² |
| Source EUI | 156.1 kBtu/ft² |
| GHG emissions | 6,328 tCO₂e |
| GHG intensity | 6.7 kgCO₂e/ft² |
| Electricity | 12,828,407 kWh |
| Natural gas | 243,027 therms |
| Water use | 13,816 kgal |
| Gross floor area | 948,747 sq ft |
| Source record | nyc:1406101:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 61 | +10 | 71.8 kBtu/ft² | 6,328 tCO₂e |
| 2023 | 51 | -20 | 87.3 kBtu/ft² | 7,043 tCO₂e |
| 2022 | 71 | 64.4 kBtu/ft² | 4,346 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
- 11 West 42nd street
- City
- New York City
- State
- New York
- ZIP
- 10036
- Coordinates
- 40.75379, -73.98160
Within ~1 km
Nearby benchmarked buildings
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- 1633 Broadway - Paramount Plazascore 75
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- 1221 Avenue of the Americasscore 86
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See also: most efficient in New York City · biggest emitters
How does 11 West 42nd 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. 11 West 42nd street's ENERGY STAR score of 61 compares with an average of 72 across the 2,519 that report a score; it scores higher than 25% of them and lower than 74%. Its site EUI of 71.8 kBtu/ft² is about 11% above the average of 64.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.7 kgCO₂e/ft² is about 15% above the group average of 5.8 kgCO₂e/ft².
At 948,747 sq ft, it is about 362% above the average floor area of 205,440 sq ft for those buildings. It was built in 1927, 13 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 11 West 42nd street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 11 West 42nd street, covering report years 2022–2024. Its ENERGY STAR score went from 71 in 2022 to 61 in 2024 (-10 points); its best year on file was 2022, at 71. Site EUI moved from 64.4 kBtu/ft² (2022) to 71.8 kBtu/ft² (2024), an 11% increase. Reported emissions went from 4,346 tCO₂e to 6,328 tCO₂e over the same span (up 46%).
What does an ENERGY STAR score of 61 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 61 means the building performs better than about 61% of its national peers. BuildingCensus bands the score into report-card grades; 61 falls in band C — below median (55–69). It sits 14 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. 11 West 42nd street's 71.8 kBtu/ft² across 948,747 sq ft works out to about 68.1 billion Btu (19,964 MWh-equivalent) in 2024. Its source EUI of 156.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 12,828,407 kWh of electricity, 243,027 therms of natural gas and 13,816 thousand gallons of water for the year.
Which law requires 11 West 42nd street to report its energy use?
11 West 42nd 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:1406101:2024). 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
- 25 Broadway· 943,164 sq ft · score 85 (A)
- GC 498 7th Ave· 936,037 sq ft · score 87 (A)
- 605 Third Ave (601 3 AVE)· 934,292 sq ft · score 76 (B)
- 390 Madison Avenue· 931,576 sq ft · score 89 (A)
- 1 MTC· 931,561 sq ft · score 77 (B)
- 70 Pine Street· 918,919 sq ft
- 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 11 West 42nd street's energy grade?
11 West 42nd street scores 61 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 11 West 42nd street use?
Its 2024 site energy-use intensity was 71.8 kBtu/ft² (156.1 kBtu/ft² source) across 948,747 sq ft, including 12,828,407 kWh of electricity and 243,027 therms of natural gas.
What are 11 West 42nd street's carbon emissions?
11 West 42nd street reported 6,328 tCO₂e of greenhouse-gas emissions (6.7 kgCO₂e/ft²) for 2024.
Where is 11 West 42nd street?
11 West 42nd street is in New York City, New York 10036. Its coordinates are 40.75379, -73.98160 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 11 West 42nd street and when was it built?
11 West 42nd street has 948,747 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1927 as its year built. It is classed as office.
Is 11 West 42nd 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, “11 West 42nd street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/11-west-42nd-street-8cd98618 (data as of October 2, 2026).