One Duffield: 1 Duffield
Multifamily Housing in New York City, NY · 1 Duffield Street · 11201
At a glance
One Duffield: 1 Duffield is a 72,765-square-foot multifamily housing building at 1 Duffield Street in New York City, New York, built in 1967. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 58 out of 100 (grade C), a site energy-use intensity of 39.2 kBtu/ft² and 328 tCO₂e of greenhouse-gas emissions. That score is higher than 39% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 58 (band C) |
| Site EUI | 39.2 kBtu/ft² |
| Source EUI | 109.8 kBtu/ft² |
| GHG emissions | 328 tCO₂e |
| GHG intensity | 4.5 kgCO₂e/ft² |
| Electricity | 836,403 kWh |
| Water use | 1,957 kgal |
| Gross floor area | 72,765 sq ft |
| Source record | nyc:18083210:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 58 | -7 | 39.2 kBtu/ft² | 328 tCO₂e |
| 2023 | 65 | +12 | 36.8 kBtu/ft² | 291 tCO₂e |
| 2022 | 53 | 42.5 kBtu/ft² | 261 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
- 1 Duffield Street
- City
- New York City
- State
- New York
- ZIP
- 11201
- Coordinates
- 40.69829, -73.98399
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does One Duffield: 1 Duffield 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. One Duffield: 1 Duffield's ENERGY STAR score of 58 compares with an average of 63 across the 22,829 that report a score; it scores higher than 39% of them and lower than 60%. Its site EUI of 39.2 kBtu/ft² is about half of 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 4.5 kgCO₂e/ft² is about 13% below the group average of 5.2 kgCO₂e/ft².
At 72,765 sq ft, it is about 28% below the average floor area of 100,951 sq ft for those buildings. It was built in 1967, 15 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 One Duffield: 1 Duffield's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for One Duffield: 1 Duffield, covering report years 2022–2024. Its ENERGY STAR score went from 53 in 2022 to 58 in 2024 (+5 points); its best year on file was 2023, at 65. Site EUI moved from 42.5 kBtu/ft² (2022) to 39.2 kBtu/ft² (2024), a 8% decrease. Reported emissions went from 261 tCO₂e to 328 tCO₂e over the same span (up 26%).
What does an ENERGY STAR score of 58 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 58 means the building performs better than about 58% of its national peers. BuildingCensus bands the score into report-card grades; 58 falls in band C — below median (55–69). It sits 17 points below 75, the threshold for ENERGY STAR certification. 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. One Duffield: 1 Duffield's 39.2 kBtu/ft² across 72,765 sq ft works out to about 2.9 billion Btu (836 MWh-equivalent) in 2024. Its source EUI of 109.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 836,403 kWh of electricity and 1,957 thousand gallons of water for the year.
Which law requires One Duffield: 1 Duffield to report its energy use?
One Duffield: 1 Duffield 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:18083210:2024). 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
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- 408 W 130· 72,751 sq ft · score 100 (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 One Duffield: 1 Duffield's energy grade?
One Duffield: 1 Duffield scores 58 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does One Duffield: 1 Duffield use?
Its 2024 site energy-use intensity was 39.2 kBtu/ft² (109.8 kBtu/ft² source) across 72,765 sq ft, including 836,403 kWh of electricity.
What are One Duffield: 1 Duffield's carbon emissions?
One Duffield: 1 Duffield reported 328 tCO₂e of greenhouse-gas emissions (4.5 kgCO₂e/ft²) for 2024.
Where is One Duffield: 1 Duffield?
One Duffield: 1 Duffield is at 1 Duffield Street, in New York City, New York 11201. Its coordinates are 40.69829, -73.98399 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is One Duffield: 1 Duffield and when was it built?
One Duffield: 1 Duffield has 72,765 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1967 as its year built. It is classed as multifamily housing.
Is One Duffield: 1 Duffield 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, “One Duffield: 1 Duffield, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/one-duffield-1-duffield-f24afecd (data as of October 2, 2026).