AKAM - 515 West 23rd Street
Multifamily Housing in New York City, NY · 515 West 23rd Street · 10011
At a glance
AKAM - 515 West 23rd Street is a 39,902-square-foot multifamily housing building in New York City, New York, built in 2008. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 51.3 kBtu/ft² and 176 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 51.3 kBtu/ft² |
| Source EUI | 101.4 kBtu/ft² |
| GHG emissions | 176 tCO₂e |
| GHG intensity | 4.4 kgCO₂e/ft² |
| Electricity | 317,650 kWh |
| Natural gas | 9,619 therms |
| Water use | 925 kgal |
| Gross floor area | 39,902 sq ft |
| Source record | nyc:6667546:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 51.3 kBtu/ft² | 176 tCO₂e | |
| 2023 | — | 56.0 kBtu/ft² | 181 tCO₂e | |
| 2022 | — | 63.2 kBtu/ft² | 174 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
- 515 West 23rd Street
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.74808, -74.00507
Within ~1 km
Nearby benchmarked buildings
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- Manhattan Westscore —
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- 20-30 Hudson Yardsscore —
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- Penn Southscore 95
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- 50 Hudson Yardsscore 76
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- The Spiral - 66 Hudson Boulevardscore 82
Office · 2,830,000 sq ft
See also: most efficient in New York City · biggest emitters
How does AKAM - 515 West 23rd Street compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 51.3 kBtu/ft² is about 32% below the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.4 kgCO₂e/ft² is about 15% below the group average of 5.2 kgCO₂e/ft².
At 39,902 sq ft, it is about 60% below the average floor area of 100,951 sq ft for those buildings. It was built in 2008, 56 years later than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has AKAM - 515 West 23rd Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for AKAM - 515 West 23rd Street, covering report years 2022–2024. Site EUI moved from 63.2 kBtu/ft² (2022) to 51.3 kBtu/ft² (2024), a 19% decrease. Reported emissions went from 174 tCO₂e to 176 tCO₂e over the same span (up 1%).
What does a site EUI of 51.3 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. AKAM - 515 West 23rd Street's 51.3 kBtu/ft² across 39,902 sq ft works out to about 2 billion Btu (600 MWh-equivalent) in 2024. Its source EUI of 101.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 317,650 kWh of electricity, 9,619 therms of natural gas and 925 thousand gallons of water for the year.
Which law requires AKAM - 515 West 23rd Street to report its energy use?
AKAM - 515 West 23rd 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:6667546:2024). 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 multifamily housing buildings in New York City
- VISCAYA CONDOMINIUM - 110 East 71st Street· 39,900 sq ft · score 58 (C)
- 139 Wooster Street· 39,897 sq ft · EUI 89.1 kBtu/ft²
- 1 West 126th Street· 39,888 sq ft · score 91 (A)
- 101 Woodruff Ave· 39,884 sq ft · score 64 (C)
- Chestnut - 1353 Sheridan Avenue· 39,876 sq ft · score 2 (D)
- 1385 NELSON AVENUE - 43076· 39,875 sq ft · score 49 (D)
- Multifamily Housing buildings in New York City· 33,022 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 AKAM - 515 West 23rd Street's energy grade?
AKAM - 515 West 23rd Street did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 51.3 kBtu/ft².
How much energy does AKAM - 515 West 23rd Street use?
Its 2024 site energy-use intensity was 51.3 kBtu/ft² (101.4 kBtu/ft² source) across 39,902 sq ft, including 317,650 kWh of electricity and 9,619 therms of natural gas.
What are AKAM - 515 West 23rd Street's carbon emissions?
AKAM - 515 West 23rd Street reported 176 tCO₂e of greenhouse-gas emissions (4.4 kgCO₂e/ft²) for 2024.
Where is AKAM - 515 West 23rd Street?
AKAM - 515 West 23rd Street is in New York City, New York 10011. Its coordinates are 40.74808, -74.00507 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is AKAM - 515 West 23rd Street and when was it built?
AKAM - 515 West 23rd Street has 39,902 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2008 as its year built. It is classed as multifamily housing.
Is AKAM - 515 West 23rd 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, “AKAM - 515 West 23rd Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/akam-515-west-23rd-street-c65f7c84 (data as of October 2, 2026).