522 Apartments Corp. (522 West End Ave)
Multifamily Housing in New York City, NY · 522 West End Ave · 10024
At a glance
522 Apartments Corp. (522 West End Ave) is a 79,123-square-foot multifamily housing building in New York City, New York, built in 1924. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 86 out of 100 (grade A), a site energy-use intensity of 58.7 kBtu/ft² and 305 tCO₂e of greenhouse-gas emissions. That score is higher than 71% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 86 (band A) |
| Site EUI | 58.7 kBtu/ft² |
| Source EUI | 82.4 kBtu/ft² |
| GHG emissions | 305 tCO₂e |
| GHG intensity | 3.9 kgCO₂e/ft² |
| Electricity | 274,173 kWh |
| Natural gas | 37,116 therms |
| Gross floor area | 79,123 sq ft |
| Source record | nyc:2638860:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 86 | -2 | 58.7 kBtu/ft² | 305 tCO₂e |
| 2023 | 88 | +2 | 56.6 kBtu/ft² | 291 tCO₂e |
| 2022 | 86 | 62.8 kBtu/ft² | 298 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
- 522 West End Ave
- City
- New York City
- State
- New York
- ZIP
- 10024
- Coordinates
- 40.78841, -73.97819
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 522 Apartments Corp. (522 West End Ave) 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. 522 Apartments Corp. (522 West End Ave)'s ENERGY STAR score of 86 compares with an average of 63 across the 22,829 that report a score; it scores higher than 71% of them and lower than 28%. Its site EUI of 58.7 kBtu/ft² is about 22% 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 3.9 kgCO₂e/ft² is about 26% below the group average of 5.2 kgCO₂e/ft².
At 79,123 sq ft, it is about 22% below the average floor area of 100,951 sq ft for those buildings. It was built in 1924, 28 years earlier 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 522 Apartments Corp. (522 West End Ave)'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 522 Apartments Corp. (522 West End Ave), covering report years 2022–2024. Its ENERGY STAR score was 86 in both 2022 and 2024. Site EUI moved from 62.8 kBtu/ft² (2022) to 58.7 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 298 tCO₂e to 305 tCO₂e over the same span (up 2%).
What does an ENERGY STAR score of 86 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 86 means the building performs better than about 86% of its national peers. BuildingCensus bands the score into report-card grades; 86 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. 522 Apartments Corp. (522 West End Ave)'s 58.7 kBtu/ft² across 79,123 sq ft works out to about 4.6 billion Btu (1,361 MWh-equivalent) in 2024. Its source EUI of 82.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 274,173 kWh of electricity and 37,116 therms of natural gas for the year.
Which law requires 522 Apartments Corp. (522 West End Ave) to report its energy use?
522 Apartments Corp. (522 West End Ave) 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:2638860:2024). 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.
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Frequently asked questions
What is 522 Apartments Corp. (522 West End Ave)'s energy grade?
522 Apartments Corp. (522 West End Ave) scores 86 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 522 Apartments Corp. (522 West End Ave) use?
Its 2024 site energy-use intensity was 58.7 kBtu/ft² (82.4 kBtu/ft² source) across 79,123 sq ft, including 274,173 kWh of electricity and 37,116 therms of natural gas.
What are 522 Apartments Corp. (522 West End Ave)'s carbon emissions?
522 Apartments Corp. (522 West End Ave) reported 305 tCO₂e of greenhouse-gas emissions (3.9 kgCO₂e/ft²) for 2024.
Where is 522 Apartments Corp. (522 West End Ave)?
522 Apartments Corp. (522 West End Ave) is in New York City, New York 10024. Its coordinates are 40.78841, -73.97819 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 522 Apartments Corp. (522 West End Ave) and when was it built?
522 Apartments Corp. (522 West End Ave) has 79,123 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1924 as its year built. It is classed as multifamily housing.
Is 522 Apartments Corp. (522 West End Ave) 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, “522 Apartments Corp. (522 West End Ave), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/522-apartments-corp-522-west-end-ave-082cf194 (data as of October 2, 2026).