Icon East 23 Street
Office in New York City, NY · 30 East 23rd Street · 10010
At a glance
Icon East 23 Street is a 38,633-square-foot office building at 30 East 23rd Street in New York City, New York, built in 1912. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 63.3 kBtu/ft² and 236 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 63.3 kBtu/ft² |
| Source EUI | 143.9 kBtu/ft² |
| GHG emissions | 236 tCO₂e |
| GHG intensity | 6.1 kgCO₂e/ft² |
| Electricity | 500,967 kWh |
| Natural gas | 7,347 therms |
| Gross floor area | 38,633 sq ft |
| Source record | nyc:24217288:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 63.3 kBtu/ft² | 236 tCO₂e | |
| 2023 | 46 | -3 | 83.7 kBtu/ft² | 225 tCO₂e |
| 2022 | 49 | 76.5 kBtu/ft² | 198 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
- 30 East 23rd Street
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.74071, -73.98762
Within ~1 km
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- One Madison Avenuescore —
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- ConEd Irving Placescore 55
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- Benchmarking Group - 3score —
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See also: most efficient in New York City · biggest emitters
How does Icon East 23 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. Its site EUI of 63.3 kBtu/ft² is roughly in line with 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 6.1 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².
At 38,633 sq ft, it is about 81% below the average floor area of 205,440 sq ft for those buildings. It was built in 1912, 28 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 Icon East 23 Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Icon East 23 Street, covering report years 2022–2024. Its ENERGY STAR score went from 49 in 2022 to 46 in 2023 (-3 points); its best year on file was 2022, at 49. Site EUI moved from 76.5 kBtu/ft² (2022) to 63.3 kBtu/ft² (2024), a 17% decrease. Reported emissions went from 198 tCO₂e to 236 tCO₂e over the same span (up 19%).
What does a site EUI of 63.3 kBtu/ft² mean?
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. Icon East 23 Street's 63.3 kBtu/ft² across 38,633 sq ft works out to about 2.4 billion Btu (717 MWh-equivalent) in 2024. Its source EUI of 143.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 500,967 kWh of electricity and 7,347 therms of natural gas for the year.
Which law requires Icon East 23 Street to report its energy use?
Icon East 23 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:24217288:2024). 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
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- 1216 Broadway· 38,500 sq ft · score 38 (D)
- Meretz Energy Group, LLC:1214 BROADWAY· 38,500 sq ft · score 14 (D)
- 76 8th Avenue· 38,438 sq ft · score 100 (A)
- 190 Bowery· 38,400 sq ft · score 90 (A)
- 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 Icon East 23 Street's energy grade?
Icon East 23 Street did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 63.3 kBtu/ft².
How much energy does Icon East 23 Street use?
Its 2024 site energy-use intensity was 63.3 kBtu/ft² (143.9 kBtu/ft² source) across 38,633 sq ft, including 500,967 kWh of electricity and 7,347 therms of natural gas.
What are Icon East 23 Street's carbon emissions?
Icon East 23 Street reported 236 tCO₂e of greenhouse-gas emissions (6.1 kgCO₂e/ft²) for 2024.
Where is Icon East 23 Street?
Icon East 23 Street is at 30 East 23rd Street, in New York City, New York 10010. Its coordinates are 40.74071, -73.98762 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Icon East 23 Street and when was it built?
Icon East 23 Street has 38,633 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1912 as its year built. It is classed as office.
Is Icon East 23 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, “Icon East 23 Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/icon-east-23-street-ae9fa02f (data as of October 2, 2026).