Cornerstone: 37-41 East 18th Street
Office in New York City, NY · 37-41 East 18th Street · 10003
At a glance
Cornerstone: 37-41 East 18th Street is a 71,745-square-foot office building in New York City, New York, built in 1900. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 98 out of 100 (grade A), a site energy-use intensity of 27.9 kBtu/ft² and 182 tCO₂e of greenhouse-gas emissions. That score is higher than 92% 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 | 98 (band A) |
| Site EUI | 27.9 kBtu/ft² |
| Source EUI | 52.3 kBtu/ft² |
| GHG emissions | 182 tCO₂e |
| GHG intensity | 2.5 kgCO₂e/ft² |
| Electricity | 282,783 kWh |
| Natural gas | 25 therms |
| Gross floor area | 71,745 sq ft |
| Source record | nyc:2814898:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 98 | +12 | 27.9 kBtu/ft² | 182 tCO₂e |
| 2022 | 86 | 58.8 kBtu/ft² | 327 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
- 37-41 East 18th Street
- City
- New York City
- State
- New York
- ZIP
- 10003
- Coordinates
- 40.73765, -73.98976
Within ~1 km
Nearby benchmarked buildings
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- One Madison Avenuescore —
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See also: most efficient in New York City · biggest emitters
How does Cornerstone: 37-41 East 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. Cornerstone: 37-41 East 18th Street's ENERGY STAR score of 98 compares with an average of 72 across the 2,519 that report a score; it scores higher than 92% of them and lower than 6%. Its site EUI of 27.9 kBtu/ft² is about 57% 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 2.5 kgCO₂e/ft² is about 57% below the group average of 5.8 kgCO₂e/ft².
At 71,745 sq ft, it is about 65% below the average floor area of 205,440 sq ft for those buildings. It was built in 1900, 40 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 Cornerstone: 37-41 East 18th Street's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Cornerstone: 37-41 East 18th Street, covering report years 2022–2023. Its ENERGY STAR score went from 86 in 2022 to 98 in 2023 (+12 points). Site EUI moved from 58.8 kBtu/ft² (2022) to 27.9 kBtu/ft² (2023), a 53% decrease. Reported emissions went from 327 tCO₂e to 182 tCO₂e over the same span (down 44%).
What does an ENERGY STAR score of 98 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 98 means the building performs better than about 98% of its national peers. BuildingCensus bands the score into report-card grades; 98 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. Cornerstone: 37-41 East 18th Street's 27.9 kBtu/ft² across 71,745 sq ft works out to about 2 billion Btu (587 MWh-equivalent) in 2023. Its source EUI of 52.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 282,783 kWh of electricity and 25 therms of natural gas for the year.
Which law requires Cornerstone: 37-41 East 18th Street to report its energy use?
Cornerstone: 37-41 East 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 2023 disclosure (source record nyc:2814898:2023). 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
- 136-68 Roosevelt Avenue· 71,650 sq ft · score 81 (B)
- 20 West 36th Street· 71,534 sq ft · score 69 (C)
- 20 West 36th Street· 71,534 sq ft · score 66 (C)
- Jim Loveall - 2330 Hoffman Street· 71,190 sq ft · score 97 (A)
- 222-25 Jamaica Avenue· 71,182 sq ft · EUI 3.5 kBtu/ft²
- 29 West 35th Street· 71,180 sq ft · score 49 (D)
- 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 Cornerstone: 37-41 East 18th Street's energy grade?
Cornerstone: 37-41 East 18th Street scores 98 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 Cornerstone: 37-41 East 18th Street use?
Its 2023 site energy-use intensity was 27.9 kBtu/ft² (52.3 kBtu/ft² source) across 71,745 sq ft, including 282,783 kWh of electricity and 25 therms of natural gas.
What are Cornerstone: 37-41 East 18th Street's carbon emissions?
Cornerstone: 37-41 East 18th Street reported 182 tCO₂e of greenhouse-gas emissions (2.5 kgCO₂e/ft²) for 2023.
Where is Cornerstone: 37-41 East 18th Street?
Cornerstone: 37-41 East 18th Street is in New York City, New York 10003. Its coordinates are 40.73765, -73.98976 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Cornerstone: 37-41 East 18th Street and when was it built?
Cornerstone: 37-41 East 18th Street has 71,745 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1900 as its year built. It is classed as office.
Is Cornerstone: 37-41 East 18th 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, “Cornerstone: 37-41 East 18th Street, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/cornerstone-37-41-east-18th-street-b5667227 (data as of October 2, 2026).