Halstead: 15 W 24th St
Multifamily Housing in New York City, NY · 15 West 24th Street · 10010
At a glance
Halstead: 15 W 24th St is a 52,420-square-foot multifamily housing building at 15 West 24th Street in New York City, New York, built in 1906. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 51.0 kBtu/ft² and 226 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 51.0 kBtu/ft² |
| Source EUI | 79.5 kBtu/ft² |
| GHG emissions | 226 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 238,539 kWh |
| Natural gas | 2,514 therms |
| Water use | 515 kgal |
| Gross floor area | 52,420 sq ft |
| Source record | nyc:8699669:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 51.0 kBtu/ft² | 226 tCO₂e | |
| 2023 | — | 47.8 kBtu/ft² | 208 tCO₂e | |
| 2022 | — | 52.5 kBtu/ft² | 206 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
- 15 West 24th Street
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.74259, -73.99000
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Halstead: 15 W 24th St 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 51.0 kBtu/ft² is about 32% 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 4.3 kgCO₂e/ft² is about 17% below the group average of 5.2 kgCO₂e/ft².
At 52,420 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1906, 46 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: 15 W 24th St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Halstead: 15 W 24th St, covering report years 2022–2024. Site EUI moved from 52.5 kBtu/ft² (2022) to 51.0 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 206 tCO₂e to 226 tCO₂e over the same span (up 10%).
What does a site EUI of 51.0 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: 15 W 24th St's 51.0 kBtu/ft² across 52,420 sq ft works out to about 2.7 billion Btu (784 MWh-equivalent) in 2024. Its source EUI of 79.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 238,539 kWh of electricity, 2,514 therms of natural gas and 515 thousand gallons of water for the year.
Which law requires Halstead: 15 W 24th St to report its energy use?
Halstead: 15 W 24th St 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:8699669:2024). 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
- Stellar - 918 East 14th Street· 52,416 sq ft · score 74 (B)
- 254 Quentin Road· 52,410 sq ft · score 75 (B)
- 1020 Walton Avenue· 52,399 sq ft · score 68 (C)
- 15 Hubert Street Condominium· 52,398 sq ft · EUI 97.2 kBtu/ft²
- OTB: 2244 Morris Ave.· 52,398 sq ft · score 78 (B)
- Pencil - 449 Troutman St.· 52,388 sq ft · score 30 (D)
- 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: 15 W 24th St's energy grade?
Halstead: 15 W 24th St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 51.0 kBtu/ft².
How much energy does Halstead: 15 W 24th St use?
Its 2024 site energy-use intensity was 51.0 kBtu/ft² (79.5 kBtu/ft² source) across 52,420 sq ft, including 238,539 kWh of electricity and 2,514 therms of natural gas.
What are Halstead: 15 W 24th St's carbon emissions?
Halstead: 15 W 24th St reported 226 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is Halstead: 15 W 24th St?
Halstead: 15 W 24th St is at 15 West 24th Street, in New York City, New York 10010. Its coordinates are 40.74259, -73.99000 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Halstead: 15 W 24th St and when was it built?
Halstead: 15 W 24th St has 52,420 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1906 as its year built. It is classed as multifamily housing.
Is Halstead: 15 W 24th St 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: 15 W 24th St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/halstead-15-w-24th-st-1ebc3d69 (data as of October 2, 2026).