45 East 20th Street
Office in New York City, NY · 10003
At a glance
45 East 20th Street is a 65,600-square-foot office building in New York City, New York, built in 1911. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 98 out of 100 (grade A), a site energy-use intensity of 15.4 kBtu/ft² and 116 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 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 98 (band A) |
| Site EUI | 15.4 kBtu/ft² |
| Source EUI | 42.8 kBtu/ft² |
| GHG emissions | 116 tCO₂e |
| GHG intensity | 1.8 kgCO₂e/ft² |
| Electricity | 293,125 kWh |
| Natural gas | 96 therms |
| Water use | 737 kgal |
| Gross floor area | 65,600 sq ft |
| Source record | nyc:30687954:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 98 | +5 | 15.4 kBtu/ft² | 116 tCO₂e |
| 2023 | 93 | 32.5 kBtu/ft² | 181 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
- 45 East 20th Street
- City
- New York City
- State
- New York
- ZIP
- 10003
- Coordinates
- 40.73885, -73.98898
Within ~1 km
Nearby benchmarked buildings
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- 11 Madison Avenuescore 77
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- 51 Madisonscore 79
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- One Madison Avenuescore —
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- ConEd Irving Placescore 55
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See also: most efficient in New York City · biggest emitters
How does 45 East 20th 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. 45 East 20th 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 15.4 kBtu/ft² is about 76% 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 1.8 kgCO₂e/ft² is about 70% below the group average of 5.8 kgCO₂e/ft².
At 65,600 sq ft, it is about 68% below the average floor area of 205,440 sq ft for those buildings. It was built in 1911, 29 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 45 East 20th Street's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 45 East 20th Street, covering report years 2023–2024. Its ENERGY STAR score went from 93 in 2023 to 98 in 2024 (+5 points). Site EUI moved from 32.5 kBtu/ft² (2023) to 15.4 kBtu/ft² (2024), a 53% decrease. Reported emissions went from 181 tCO₂e to 116 tCO₂e over the same span (down 36%).
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. 45 East 20th Street's 15.4 kBtu/ft² across 65,600 sq ft works out to about 1 billion Btu (296 MWh-equivalent) in 2024. Its source EUI of 42.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 293,125 kWh of electricity, 96 therms of natural gas and 737 thousand gallons of water for the year.
Which law requires 45 East 20th Street to report its energy use?
45 East 20th 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:30687954:2024). 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
- 3250 Westchester Ave· 65,596 sq ft · score 1 (D)
- Jenel Management - 161-21 Jamaica Ave.· 65,587 sq ft · score 85 (A)
- ABC: 936 Broadway· 65,427 sq ft · score 61 (C)
- NW 520 SOHO LLC· 65,254 sq ft · score 82 (B)
- 236 5th Avenue· 65,247 sq ft · score 26 (D)
- CHILD - 410 W 13th St· 65,245 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 45 East 20th Street's energy grade?
45 East 20th Street scores 98 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 45 East 20th Street use?
Its 2024 site energy-use intensity was 15.4 kBtu/ft² (42.8 kBtu/ft² source) across 65,600 sq ft, including 293,125 kWh of electricity and 96 therms of natural gas.
What are 45 East 20th Street's carbon emissions?
45 East 20th Street reported 116 tCO₂e of greenhouse-gas emissions (1.8 kgCO₂e/ft²) for 2024.
Where is 45 East 20th Street?
45 East 20th Street is in New York City, New York 10003. Its coordinates are 40.73885, -73.98898 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 45 East 20th Street and when was it built?
45 East 20th Street has 65,600 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1911 as its year built. It is classed as office.
Is 45 East 20th 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, “45 East 20th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/45-east-20th-street-27d3541a (data as of October 2, 2026).