Halstead - 39 West 23rd Street NY, NY 10010
Multifamily Housing in New York City, NY · 39 WEST 23 STREET · 10010
At a glance
Halstead - 39 West 23rd Street NY, NY 10010 is a 128,730-square-foot multifamily housing building at 39 WEST 23 STREET in New York City, New York, built in 2018. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 45.5 kBtu/ft² and 479 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 45.5 kBtu/ft² |
| Source EUI | 84.6 kBtu/ft² |
| GHG emissions | 479 tCO₂e |
| GHG intensity | 3.7 kgCO₂e/ft² |
| Electricity | 793,389 kWh |
| Natural gas | 31,512 therms |
| Gross floor area | 128,730 sq ft |
| Source record | nyc:33561303:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 45.5 kBtu/ft² | 479 tCO₂e | |
| 2023 | 37 | 71.3 kBtu/ft² | 500 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
- 39 WEST 23 STREET
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.74213, -73.99093
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Halstead - 39 West 23rd Street NY, NY 10010 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 45.5 kBtu/ft² is about 39% 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 3.7 kgCO₂e/ft² is about 28% below the group average of 5.2 kgCO₂e/ft².
At 128,730 sq ft, it is about 28% above the average floor area of 100,951 sq ft for those buildings. It was built in 2018, 66 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 Halstead - 39 West 23rd Street NY, NY 10010's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Halstead - 39 West 23rd Street NY, NY 10010, covering report years 2023–2024. Site EUI moved from 71.3 kBtu/ft² (2023) to 45.5 kBtu/ft² (2024), a 36% decrease. Reported emissions went from 500 tCO₂e to 479 tCO₂e over the same span (down 4%).
What does a site EUI of 45.5 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. Halstead - 39 West 23rd Street NY, NY 10010's 45.5 kBtu/ft² across 128,730 sq ft works out to about 5.9 billion Btu (1,717 MWh-equivalent) in 2024. Its source EUI of 84.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 793,389 kWh of electricity and 31,512 therms of natural gas for the year.
Which law requires Halstead - 39 West 23rd Street NY, NY 10010 to report its energy use?
Halstead - 39 West 23rd Street NY, NY 10010 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:33561303:2024). 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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- 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 Halstead - 39 West 23rd Street NY, NY 10010's energy grade?
Halstead - 39 West 23rd Street NY, NY 10010 did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 45.5 kBtu/ft².
How much energy does Halstead - 39 West 23rd Street NY, NY 10010 use?
Its 2024 site energy-use intensity was 45.5 kBtu/ft² (84.6 kBtu/ft² source) across 128,730 sq ft, including 793,389 kWh of electricity and 31,512 therms of natural gas.
What are Halstead - 39 West 23rd Street NY, NY 10010's carbon emissions?
Halstead - 39 West 23rd Street NY, NY 10010 reported 479 tCO₂e of greenhouse-gas emissions (3.7 kgCO₂e/ft²) for 2024.
Where is Halstead - 39 West 23rd Street NY, NY 10010?
Halstead - 39 West 23rd Street NY, NY 10010 is at 39 WEST 23 STREET, in New York City, New York 10010. Its coordinates are 40.74213, -73.99093 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Halstead - 39 West 23rd Street NY, NY 10010 and when was it built?
Halstead - 39 West 23rd Street NY, NY 10010 has 128,730 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2018 as its year built. It is classed as multifamily housing.
Is Halstead - 39 West 23rd Street NY, NY 10010 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, “Halstead - 39 West 23rd Street NY, NY 10010, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/halstead-39-west-23rd-street-ny-ny-10010-52cef33d (data as of October 2, 2026).