One Dag Hammarskjold Plaza
Office in New York City, NY · 883 Second Avenue · 10017
At a glance
One Dag Hammarskjold Plaza is a 771,118-square-foot office building at 883 Second Avenue in New York City, New York, built in 1974. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 86 out of 100 (grade A), a site energy-use intensity of 64.6 kBtu/ft² and 4,344 tCO₂e of greenhouse-gas emissions. That score is higher than 65% 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 | 86 (band A) |
| Site EUI | 64.6 kBtu/ft² |
| Source EUI | 121.8 kBtu/ft² |
| GHG emissions | 4,344 tCO₂e |
| GHG intensity | 5.6 kgCO₂e/ft² |
| Electricity | 6,227,731 kWh |
| Natural gas | 0 therms |
| Gross floor area | 771,118 sq ft |
| Source record | nyc:6814820:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 86 | +3 | 64.6 kBtu/ft² | 4,344 tCO₂e |
| 2023 | 83 | +2 | 55.3 kBtu/ft² | 3,900 tCO₂e |
| 2022 | 81 | 60.5 kBtu/ft² | 3,663 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
- 883 Second Avenue
- City
- New York City
- State
- New York
- ZIP
- 10017
- Coordinates
- 40.75315, -73.96979
Within ~1 km
Nearby benchmarked buildings
- Metlife Building (200 Park)score 69
Office · 2,993,388 sq ft
- 277 Park Avenuescore 64
Office · 1,897,643 sq ft
- 345 Park Ave LPscore 47
Office · 1,783,232 sq ft
- 277 Park Avenuescore 55
Office · 1,745,856 sq ft
Office · 1,682,110 sq ft
- 399 Park Avenuescore 69
Office · 1,671,941 sq ft
See also: most efficient in New York City · biggest emitters
How does One Dag Hammarskjold Plaza 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. One Dag Hammarskjold Plaza's ENERGY STAR score of 86 compares with an average of 72 across the 2,519 that report a score; it scores higher than 65% of them and lower than 33%. Its site EUI of 64.6 kBtu/ft² is roughly in line with the average of 64.5 kBtu/ft². Its emissions intensity of 5.6 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².
At 771,118 sq ft, it is about 275% above the average floor area of 205,440 sq ft for those buildings. It was built in 1974, 34 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 One Dag Hammarskjold Plaza's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for One Dag Hammarskjold Plaza, covering report years 2022–2024. Its ENERGY STAR score went from 81 in 2022 to 86 in 2024 (+5 points). Site EUI moved from 60.5 kBtu/ft² (2022) to 64.6 kBtu/ft² (2024), an 7% increase. Reported emissions went from 3,663 tCO₂e to 4,344 tCO₂e over the same span (up 19%).
What does an ENERGY STAR score of 86 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 86 means the building performs better than about 86% of its national peers. BuildingCensus bands the score into report-card grades; 86 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. One Dag Hammarskjold Plaza's 64.6 kBtu/ft² across 771,118 sq ft works out to about 49.8 billion Btu (14,599 MWh-equivalent) in 2024. Its source EUI of 121.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 6,227,731 kWh of electricity and 0 therms of natural gas for the year.
Which law requires One Dag Hammarskjold Plaza to report its energy use?
One Dag Hammarskjold Plaza 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:6814820:2024). 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 office buildings in New York City
- 750 Third Avenue· 767,643 sq ft · EUI 36.6 kBtu/ft²
- 1501 Broadway· 762,028 sq ft · score 47 (D)
- LITTLE 40 WORTH ASSOC.· 756,174 sq ft · score 88 (A)
- BROADWAY 2024 PROPCO LLC· 756,138 sq ft · score 79 (B)
- 135 West 50th St.· 751,395 sq ft · score 95 (A)
- 135 West 50th St.-RDA· 751,395 sq ft · score 98 (A)
- Office buildings in New York City· 3,384 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 Dag Hammarskjold Plaza's energy grade?
One Dag Hammarskjold Plaza scores 86 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 One Dag Hammarskjold Plaza use?
Its 2024 site energy-use intensity was 64.6 kBtu/ft² (121.8 kBtu/ft² source) across 771,118 sq ft, including 6,227,731 kWh of electricity and 0 therms of natural gas.
What are One Dag Hammarskjold Plaza's carbon emissions?
One Dag Hammarskjold Plaza reported 4,344 tCO₂e of greenhouse-gas emissions (5.6 kgCO₂e/ft²) for 2024.
Where is One Dag Hammarskjold Plaza?
One Dag Hammarskjold Plaza is at 883 Second Avenue, in New York City, New York 10017. Its coordinates are 40.75315, -73.96979 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is One Dag Hammarskjold Plaza and when was it built?
One Dag Hammarskjold Plaza has 771,118 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1974 as its year built. It is classed as office.
Is One Dag Hammarskjold Plaza 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 Dag Hammarskjold Plaza, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/one-dag-hammarskjold-plaza-1aa6dd66 (data as of October 2, 2026).