141 Willoughby Street
Office in New York City, NY · 11201
At a glance
141 Willoughby Street is a 380,550-square-foot office building in New York City, New York, built in 1919. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 26.1 kBtu/ft² and 785 tCO₂e of greenhouse-gas emissions. That score is higher than 94% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 26.1 kBtu/ft² |
| Source EUI | 48.7 kBtu/ft² |
| GHG emissions | 785 tCO₂e |
| GHG intensity | 2.1 kgCO₂e/ft² |
| Electricity | 1,353,005 kWh |
| Natural gas | 52,988 therms |
| Gross floor area | 380,550 sq ft |
| Source record | nyc:25971772:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 99 | ±0 | 26.1 kBtu/ft² | 785 tCO₂e |
| 2022 | 99 | 19.2 kBtu/ft² | 551 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
- 141 Willoughby Street
- City
- New York City
- State
- New York
- ZIP
- 11201
- Coordinates
- 40.69208, -73.98314
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 141 Willoughby 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. 141 Willoughby Street's ENERGY STAR score of 99 compares with an average of 72 across the 2,519 that report a score; it scores higher than 94% of them and lower than 5%. Its site EUI of 26.1 kBtu/ft² is about 60% 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 2.1 kgCO₂e/ft² is about 64% below the group average of 5.8 kgCO₂e/ft².
At 380,550 sq ft, it is about 85% above the average floor area of 205,440 sq ft for those buildings. It was built in 1919, 21 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 141 Willoughby Street's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 141 Willoughby Street, covering report years 2022–2023. Its ENERGY STAR score was 99 in both 2022 and 2023. Site EUI moved from 19.2 kBtu/ft² (2022) to 26.1 kBtu/ft² (2023), an 36% increase. Reported emissions went from 551 tCO₂e to 785 tCO₂e over the same span (up 43%).
What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 falls in band A — high performer (85–100). 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. 141 Willoughby Street's 26.1 kBtu/ft² across 380,550 sq ft works out to about 9.9 billion Btu (2,911 MWh-equivalent) in 2023. Its source EUI of 48.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,353,005 kWh of electricity and 52,988 therms of natural gas for the year.
Which law requires 141 Willoughby Street to report its energy use?
141 Willoughby 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:25971772:2023). 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
- Archdiocese of NY - 1011 1st Ave· 379,996 sq ft · EUI 102.5 kBtu/ft²
- 100 Broadway (96 BROADWAY)· 379,572 sq ft · score 87 (A)
- 90 Broad Street (Broad Street Plaza)· 378,842 sq ft · EUI 44.8 kBtu/ft²
- 100 William Street NY· 377,120 sq ft · score 57 (C)
- 100 William· 377,120 sq ft · score 70 (B)
- 100 William· 377,120 sq ft · score 77 (B)
- 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 141 Willoughby Street's energy grade?
141 Willoughby Street scores 99 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 141 Willoughby Street use?
Its 2023 site energy-use intensity was 26.1 kBtu/ft² (48.7 kBtu/ft² source) across 380,550 sq ft, including 1,353,005 kWh of electricity and 52,988 therms of natural gas.
What are 141 Willoughby Street's carbon emissions?
141 Willoughby Street reported 785 tCO₂e of greenhouse-gas emissions (2.1 kgCO₂e/ft²) for 2023.
Where is 141 Willoughby Street?
141 Willoughby Street is in New York City, New York 11201. Its coordinates are 40.69208, -73.98314 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 141 Willoughby Street and when was it built?
141 Willoughby Street has 380,550 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1919 as its year built. It is classed as office.
Is 141 Willoughby 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, “141 Willoughby Street, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/141-willoughby-street-20cf0fb7 (data as of October 2, 2026).