Halsey-Waterbury LLC
Office in New York City, NY · 2400 Halsey Street · 10461
At a glance
Halsey-Waterbury LLC is a 34,000-square-foot office building at 2400 Halsey Street in New York City, New York, built in 2002. 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 25.2 kBtu/ft² and 48 tCO₂e of greenhouse-gas emissions. That score is higher than 95% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 25.2 kBtu/ft² |
| Source EUI | 28.6 kBtu/ft² |
| GHG emissions | 48 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 12,073 kWh |
| Natural gas | 8,155 therms |
| Water use | 176 kgal |
| Gross floor area | 34,000 sq ft |
| Source record | nyc:17387109:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 25.2 kBtu/ft² | 48 tCO₂e |
| 2023 | 100 | ±0 | 23.3 kBtu/ft² | 43 tCO₂e |
| 2022 | 100 | 28.8 kBtu/ft² | 53 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
- 2400 Halsey Street
- City
- New York City
- State
- New York
- ZIP
- 10461
- Coordinates
- 40.83582, -73.84517
Within ~1 km
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How does Halsey-Waterbury LLC compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. Halsey-Waterbury LLC's ENERGY STAR score of 100 compares with an average of 72 across the 2,519 that report a score; it scores higher than 95% of them. Its site EUI of 25.2 kBtu/ft² is about 61% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.4 kgCO₂e/ft² is about 76% below the group average of 5.8 kgCO₂e/ft².
At 34,000 sq ft, it is about 83% below the average floor area of 205,440 sq ft for those buildings. It was built in 2002, 62 years later than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Halsey-Waterbury LLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Halsey-Waterbury LLC, covering report years 2022–2024. Its ENERGY STAR score was 100 in both 2022 and 2024. Site EUI moved from 28.8 kBtu/ft² (2022) to 25.2 kBtu/ft² (2024), a 13% decrease. Reported emissions went from 53 tCO₂e to 48 tCO₂e over the same span (down 9%).
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. Halsey-Waterbury LLC's 25.2 kBtu/ft² across 34,000 sq ft works out to about 0.9 billion Btu (251 MWh-equivalent) in 2024. Its source EUI of 28.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 12,073 kWh of electricity, 8,155 therms of natural gas and 176 thousand gallons of water for the year.
Which law requires Halsey-Waterbury LLC to report its energy use?
Halsey-Waterbury LLC 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:17387109:2024). 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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Frequently asked questions
What is Halsey-Waterbury LLC's energy grade?
Halsey-Waterbury LLC 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 Halsey-Waterbury LLC use?
Its 2024 site energy-use intensity was 25.2 kBtu/ft² (28.6 kBtu/ft² source) across 34,000 sq ft, including 12,073 kWh of electricity and 8,155 therms of natural gas.
What are Halsey-Waterbury LLC's carbon emissions?
Halsey-Waterbury LLC reported 48 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2024.
Where is Halsey-Waterbury LLC?
Halsey-Waterbury LLC is at 2400 Halsey Street, in New York City, New York 10461. Its coordinates are 40.83582, -73.84517 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Halsey-Waterbury LLC and when was it built?
Halsey-Waterbury LLC has 34,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2002 as its year built. It is classed as office.
Is Halsey-Waterbury LLC 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, “Halsey-Waterbury LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/halsey-waterbury-llc-6e0b9b7e (data as of October 2, 2026).