18 West 18th Street
Office in New York City, NY · 10011
At a glance
18 West 18th Street is a 180,000-square-foot office building in New York City, New York, built in 1902. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 32.4 kBtu/ft² and 486 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 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 32.4 kBtu/ft² |
| Source EUI | 61.7 kBtu/ft² |
| GHG emissions | 486 tCO₂e |
| GHG intensity | 2.7 kgCO₂e/ft² |
| Electricity | 833,782 kWh |
| Natural gas | 29,919 therms |
| Gross floor area | 180,000 sq ft |
| Source record | nyc:2639187:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 99 | ±0 | 32.4 kBtu/ft² | 486 tCO₂e |
| 2023 | 99 | ±0 | 33.5 kBtu/ft² | 477 tCO₂e |
| 2022 | 99 | 43.1 kBtu/ft² | 466 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
- 18 West 18th Street
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.73886, -73.99266
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 18 West 18th 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. 18 West 18th 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 32.4 kBtu/ft² is about half of 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 2.7 kgCO₂e/ft² is about half of the group average of 5.8 kgCO₂e/ft².
At 180,000 sq ft, it is about 12% below the average floor area of 205,440 sq ft for those buildings. It was built in 1902, 38 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 18 West 18th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 18 West 18th Street, covering report years 2022–2024. Its ENERGY STAR score was 99 in both 2022 and 2024. Site EUI moved from 43.1 kBtu/ft² (2022) to 32.4 kBtu/ft² (2024), a 25% decrease. Reported emissions went from 466 tCO₂e to 486 tCO₂e over the same span (up 4%).
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. 18 West 18th Street's 32.4 kBtu/ft² across 180,000 sq ft works out to about 5.8 billion Btu (1,709 MWh-equivalent) in 2024. Its source EUI of 61.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 833,782 kWh of electricity and 29,919 therms of natural gas for the year.
Which law requires 18 West 18th Street to report its energy use?
18 West 18th 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:2639187:2024). 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
- 303 Lexington Avenue - data· 179,142 sq ft · score 80 (B)
- 151 West 26th Street· 179,131 sq ft · score 67 (C)
- 151 West 26th Street· 179,131 sq ft · score 68 (C)
- 33 Nielson Street· 178,808 sq ft
- 63 Flushing Ave· 178,808 sq ft · EUI 73.6 kBtu/ft²
- 303 Sands Street· 178,808 sq ft · EUI 43.6 kBtu/ft²
- 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 18 West 18th Street's energy grade?
18 West 18th Street scores 99 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 18 West 18th Street use?
Its 2024 site energy-use intensity was 32.4 kBtu/ft² (61.7 kBtu/ft² source) across 180,000 sq ft, including 833,782 kWh of electricity and 29,919 therms of natural gas.
What are 18 West 18th Street's carbon emissions?
18 West 18th Street reported 486 tCO₂e of greenhouse-gas emissions (2.7 kgCO₂e/ft²) for 2024.
Where is 18 West 18th Street?
18 West 18th Street is in New York City, New York 10011. Its coordinates are 40.73886, -73.99266 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 18 West 18th Street and when was it built?
18 West 18th Street has 180,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1902 as its year built. It is classed as office.
Is 18 West 18th 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, “18 West 18th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/18-west-18th-street-8f75aeea (data as of October 2, 2026).