The Helena
Multifamily Housing in New York City, NY · 601 West 57th Street · 10019
At a glance
The Helena is a 540,237-square-foot multifamily housing building at 601 West 57th Street in New York City, New York, built in 2005. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 76.9 kBtu/ft² and 3,400 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 76.9 kBtu/ft² |
| Source EUI | 143.2 kBtu/ft² |
| GHG emissions | 3,400 tCO₂e |
| GHG intensity | 6.3 kgCO₂e/ft² |
| Electricity | 5,652,292 kWh |
| Natural gas | 222,330 therms |
| Gross floor area | 540,237 sq ft |
| Source record | nyc:2729772:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 76.9 kBtu/ft² | 3,400 tCO₂e | |
| 2023 | 26 | +2 | 80.4 kBtu/ft² | 3,415 tCO₂e |
| 2022 | 24 | 89.4 kBtu/ft² | 3,281 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
- 601 West 57th Street
- City
- New York City
- State
- New York
- ZIP
- 10019
- Coordinates
- 40.77052, -73.99187
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does The Helena 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 76.9 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 6.3 kgCO₂e/ft² is about 21% above the group average of 5.2 kgCO₂e/ft².
At 540,237 sq ft, it is about 435% above the average floor area of 100,951 sq ft for those buildings. It was built in 2005, 53 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 The Helena's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for The Helena, covering report years 2022–2024. Its ENERGY STAR score went from 24 in 2022 to 26 in 2023 (+2 points). Site EUI moved from 89.4 kBtu/ft² (2022) to 76.9 kBtu/ft² (2024), a 14% decrease. Reported emissions went from 3,281 tCO₂e to 3,400 tCO₂e over the same span (up 4%).
What does a site EUI of 76.9 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. The Helena's 76.9 kBtu/ft² across 540,237 sq ft works out to about 41.5 billion Btu (12,175 MWh-equivalent) in 2024. Its source EUI of 143.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 5,652,292 kWh of electricity and 222,330 therms of natural gas for the year.
Which law requires The Helena to report its energy use?
The Helena 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:2729772:2024). 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 2560 - 555 Kappock Street· 540,000 sq ft · score 92 (A)
- 10 Halletts Point· 539,142 sq ft · score 64 (C)
- 303 East 57th St· 539,027 sq ft · score 31 (D)
- (4161) - Excelsior 57th Corp (303 East 57th Street)· 539,027 sq ft · score 43 (D)
- 303 East 57th Street· 539,027 sq ft · score 13 (D)
- River Point Towers Cooperative (555 Kappock Street)· 539,000 sq ft · score 93 (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 The Helena's energy grade?
The Helena did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 76.9 kBtu/ft².
How much energy does The Helena use?
Its 2024 site energy-use intensity was 76.9 kBtu/ft² (143.2 kBtu/ft² source) across 540,237 sq ft, including 5,652,292 kWh of electricity and 222,330 therms of natural gas.
What are The Helena's carbon emissions?
The Helena reported 3,400 tCO₂e of greenhouse-gas emissions (6.3 kgCO₂e/ft²) for 2024.
Where is The Helena?
The Helena is at 601 West 57th Street, in New York City, New York 10019. Its coordinates are 40.77052, -73.99187 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is The Helena and when was it built?
The Helena has 540,237 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2005 as its year built. It is classed as multifamily housing.
Is The Helena 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, “The Helena, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/the-helena-ce84b035 (data as of October 2, 2026).