A02140 - The 640 West End Avenue Condominium
Multifamily Housing in New York City, NY · 640 West End Avenue · 10024
At a glance
A02140 - The 640 West End Avenue Condominium is a 60,804-square-foot multifamily housing building in New York City, New York, built in 1913. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 8 out of 100 (grade D), a site energy-use intensity of 144.0 kBtu/ft² and 590 tCO₂e of greenhouse-gas emissions. That score is higher than 6% 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 | 8 (band D) |
| Site EUI | 144.0 kBtu/ft² |
| Source EUI | 171.7 kBtu/ft² |
| GHG emissions | 590 tCO₂e |
| GHG intensity | 9.7 kgCO₂e/ft² |
| Electricity | 231,230 kWh |
| Natural gas | 45,265 therms |
| Gross floor area | 60,804 sq ft |
| Source record | nyc:7914065:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 8 | -1 | 144.0 kBtu/ft² | 590 tCO₂e |
| 2023 | 9 | -25 | 141.4 kBtu/ft² | 573 tCO₂e |
| 2022 | 34 | 93.5 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
- 640 West End Avenue
- City
- New York City
- State
- New York
- ZIP
- 10024
- Coordinates
- 40.79203, -73.97516
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does A02140 - The 640 West End Avenue Condominium 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. A02140 - The 640 West End Avenue Condominium's ENERGY STAR score of 8 compares with an average of 63 across the 22,829 that report a score; it scores higher than 6% of them and lower than 93%. Its site EUI of 144.0 kBtu/ft² is about twice the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 9.7 kgCO₂e/ft² is about 87% above the group average of 5.2 kgCO₂e/ft².
At 60,804 sq ft, it is about 40% below the average floor area of 100,951 sq ft for those buildings. It was built in 1913, 39 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 A02140 - The 640 West End Avenue Condominium's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for A02140 - The 640 West End Avenue Condominium, covering report years 2022–2024. Its ENERGY STAR score went from 34 in 2022 to 8 in 2024 (-26 points); its best year on file was 2022, at 34. Site EUI moved from 93.5 kBtu/ft² (2022) to 144.0 kBtu/ft² (2024), an 54% increase. Reported emissions went from 327 tCO₂e to 590 tCO₂e over the same span (up 80%).
What does an ENERGY STAR score of 8 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 8 means the building performs better than about 8% of its national peers. BuildingCensus bands the score into report-card grades; 8 falls in band D — lowest band (1–54). It sits 67 points below 75, the threshold for ENERGY STAR certification. 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. A02140 - The 640 West End Avenue Condominium's 144.0 kBtu/ft² across 60,804 sq ft works out to about 8.8 billion Btu (2,566 MWh-equivalent) in 2024. Its source EUI of 171.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 231,230 kWh of electricity and 45,265 therms of natural gas for the year.
Which law requires A02140 - The 640 West End Avenue Condominium to report its energy use?
A02140 - The 640 West End Avenue Condominium 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:7914065:2024). 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
- DEPM 1290 PARENT - 114 Greene St / 102 Prince Street· 60,800 sq ft · EUI 65.0 kBtu/ft²
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- All New York City benchmarked buildings· Local Law 84 (LL84)
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Frequently asked questions
What is A02140 - The 640 West End Avenue Condominium's energy grade?
A02140 - The 640 West End Avenue Condominium scores 8 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does A02140 - The 640 West End Avenue Condominium use?
Its 2024 site energy-use intensity was 144.0 kBtu/ft² (171.7 kBtu/ft² source) across 60,804 sq ft, including 231,230 kWh of electricity and 45,265 therms of natural gas.
What are A02140 - The 640 West End Avenue Condominium's carbon emissions?
A02140 - The 640 West End Avenue Condominium reported 590 tCO₂e of greenhouse-gas emissions (9.7 kgCO₂e/ft²) for 2024.
Where is A02140 - The 640 West End Avenue Condominium?
A02140 - The 640 West End Avenue Condominium is in New York City, New York 10024. Its coordinates are 40.79203, -73.97516 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is A02140 - The 640 West End Avenue Condominium and when was it built?
A02140 - The 640 West End Avenue Condominium has 60,804 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1913 as its year built. It is classed as multifamily housing.
Is A02140 - The 640 West End Avenue Condominium 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, “A02140 - The 640 West End Avenue Condominium, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/a02140-the-640-west-end-avenue-condominium-a238b4f4 (data as of October 2, 2026).