Halstead - 270 West End Avenue
Multifamily Housing in New York City, NY · 270 West End Avenue · 10023
At a glance
Halstead - 270 West End Avenue is a 80,700-square-foot multifamily housing building in New York City, New York, built in 1918. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 86 out of 100 (grade A), a site energy-use intensity of 63.8 kBtu/ft² and 419 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 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 86 (band A) |
| Site EUI | 63.8 kBtu/ft² |
| Source EUI | 86.5 kBtu/ft² |
| GHG emissions | 419 tCO₂e |
| GHG intensity | 5.2 kgCO₂e/ft² |
| Electricity | 291,522 kWh |
| Natural gas | 924 therms |
| Water use | 2,134 kgal |
| Gross floor area | 80,700 sq ft |
| Source record | nyc:4034487:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 86 | +4 | 63.8 kBtu/ft² | 419 tCO₂e |
| 2022 | 82 | 72.3 kBtu/ft² | 447 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
- 270 West End Avenue
- City
- New York City
- State
- New York
- ZIP
- 10023
- Coordinates
- 40.78023, -73.98416
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Halstead - 270 West End Avenue 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. Halstead - 270 West End Avenue'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 63.8 kBtu/ft² is about 15% 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 5.2 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 80,700 sq ft, it is about 20% below the average floor area of 100,951 sq ft for those buildings. It was built in 1918, 34 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 Halstead - 270 West End Avenue's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Halstead - 270 West End Avenue, covering report years 2022–2023. Its ENERGY STAR score went from 82 in 2022 to 86 in 2023 (+4 points). Site EUI moved from 72.3 kBtu/ft² (2022) to 63.8 kBtu/ft² (2023), a 12% decrease. Reported emissions went from 447 tCO₂e to 419 tCO₂e over the same span (down 6%).
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. Halstead - 270 West End Avenue's 63.8 kBtu/ft² across 80,700 sq ft works out to about 5.1 billion Btu (1,509 MWh-equivalent) in 2023. Its source EUI of 86.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 291,522 kWh of electricity, 924 therms of natural gas and 2,134 thousand gallons of water for the year.
Which law requires Halstead - 270 West End Avenue to report its energy use?
Halstead - 270 West End Avenue 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 2023 disclosure (source record nyc:4034487:2023). 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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- Multifamily Housing buildings in New York City· 33,022 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
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Frequently asked questions
What is Halstead - 270 West End Avenue's energy grade?
Halstead - 270 West End Avenue scores 86 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Halstead - 270 West End Avenue use?
Its 2023 site energy-use intensity was 63.8 kBtu/ft² (86.5 kBtu/ft² source) across 80,700 sq ft, including 291,522 kWh of electricity and 924 therms of natural gas.
What are Halstead - 270 West End Avenue's carbon emissions?
Halstead - 270 West End Avenue reported 419 tCO₂e of greenhouse-gas emissions (5.2 kgCO₂e/ft²) for 2023.
Where is Halstead - 270 West End Avenue?
Halstead - 270 West End Avenue is in New York City, New York 10023. Its coordinates are 40.78023, -73.98416 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Halstead - 270 West End Avenue and when was it built?
Halstead - 270 West End Avenue has 80,700 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1918 as its year built. It is classed as multifamily housing.
Is Halstead - 270 West End Avenue covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “Halstead - 270 West End Avenue, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/halstead-270-west-end-avenue-a2bab438 (data as of October 2, 2026).