650 West End Condominium
Multifamily Housing in New York City, NY · 650 W. End Avenue · 10025
At a glance
650 West End Condominium is a 92,224-square-foot multifamily housing building at 650 W. End Avenue in New York City, New York, built in 1926. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 30.7 kBtu/ft² and 217 tCO₂e of greenhouse-gas emissions. That score is higher than 90% 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 | 100 (band A) |
| Site EUI | 30.7 kBtu/ft² |
| Source EUI | 52.5 kBtu/ft² |
| GHG emissions | 217 tCO₂e |
| GHG intensity | 2.4 kgCO₂e/ft² |
| Electricity | 312,653 kWh |
| Natural gas | 17,668 therms |
| Water use | 1,912 kgal |
| Gross floor area | 92,224 sq ft |
| Source record | nyc:2799305:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 30.7 kBtu/ft² | 217 tCO₂e |
| 2023 | 100 | ±0 | 13.5 kBtu/ft² | 130 tCO₂e |
| 2022 | 100 | 38.3 kBtu/ft² | 225 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
- 650 W. End Avenue
- City
- New York City
- State
- New York
- ZIP
- 10025
- Coordinates
- 40.79250, -73.97522
Within ~1 km
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How does 650 West End 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. 650 West End Condominium's ENERGY STAR score of 100 compares with an average of 63 across the 22,829 that report a score; it scores higher than 90% of them. Its site EUI of 30.7 kBtu/ft² is about 59% 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 2.4 kgCO₂e/ft² is about half of the group average of 5.2 kgCO₂e/ft².
At 92,224 sq ft, it is roughly in line with the average floor area of 100,951 sq ft for those buildings. It was built in 1926, 26 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 650 West End Condominium's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 650 West End Condominium, covering report years 2022–2024. Its ENERGY STAR score was 100 in both 2022 and 2024. Site EUI moved from 38.3 kBtu/ft² (2022) to 30.7 kBtu/ft² (2024), a 20% decrease. Reported emissions went from 225 tCO₂e to 217 tCO₂e over the same span (down 4%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. 650 West End Condominium's 30.7 kBtu/ft² across 92,224 sq ft works out to about 2.8 billion Btu (830 MWh-equivalent) in 2024. Its source EUI of 52.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 312,653 kWh of electricity, 17,668 therms of natural gas and 1,912 thousand gallons of water for the year.
Which law requires 650 West End Condominium to report its energy use?
650 West End 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:2799305:2024). 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
- Rego Park Gardens Owners Corp (9411 60th Ave)· 92,214 sq ft · score 25 (D)
- Rego Park Gardens Owners Corp (9410 59th Ave)· 92,214 sq ft · score 100 (A)
- Rego Park Gardens Owners Corp (9431 60th Ave)· 92,213 sq ft · score 1 (D)
- Atelier (parent) - 29634· 92,200 sq ft · score 95 (A)
- 949 West End Avenue - 42972· 92,186 sq ft · score 95 (A)
- Central Queens - 89-25 Elmhurst Ave.· 92,180 sq ft · score 98 (A)
- 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 650 West End Condominium's energy grade?
650 West End Condominium scores 100 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 650 West End Condominium use?
Its 2024 site energy-use intensity was 30.7 kBtu/ft² (52.5 kBtu/ft² source) across 92,224 sq ft, including 312,653 kWh of electricity and 17,668 therms of natural gas.
What are 650 West End Condominium's carbon emissions?
650 West End Condominium reported 217 tCO₂e of greenhouse-gas emissions (2.4 kgCO₂e/ft²) for 2024.
Where is 650 West End Condominium?
650 West End Condominium is at 650 W. End Avenue, in New York City, New York 10025. Its coordinates are 40.79250, -73.97522 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 650 West End Condominium and when was it built?
650 West End Condominium has 92,224 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as multifamily housing.
Is 650 West End 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, “650 West End Condominium, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/650-west-end-condominium-9e538c14 (data as of October 2, 2026).