100 Park Avenue
Office in New York City, NY · 10017
At a glance
100 Park Avenue is a 845,387-square-foot office building in New York City, New York, built in 1949. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 78 out of 100 (grade B), a site energy-use intensity of 49.5 kBtu/ft² and 4,149 tCO₂e of greenhouse-gas emissions. That score is higher than 48% 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 | 78 (band B) |
| Site EUI | 49.5 kBtu/ft² |
| Source EUI | 113.2 kBtu/ft² |
| GHG emissions | 4,149 tCO₂e |
| GHG intensity | 4.9 kgCO₂e/ft² |
| Electricity | 8,362,034 kWh |
| Natural gas | 13,612 therms |
| Water use | 7,288 kgal |
| Gross floor area | 845,387 sq ft |
| Source record | nyc:2712431:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 78 | -3 | 49.5 kBtu/ft² | 4,149 tCO₂e |
| 2023 | 81 | +5 | 50.4 kBtu/ft² | 4,203 tCO₂e |
| 2022 | 76 | 55.7 kBtu/ft² | 3,782 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
- 100 Park Avenue
- City
- New York City
- State
- New York
- ZIP
- 10017
- Coordinates
- 40.75100, -73.97850
Within ~1 km
Nearby benchmarked buildings
- Metlife Building (200 Park)score 69
Office · 2,993,388 sq ft
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- ESRT - Empire State Buildingscore 78
Office · 2,852,257 sq ft
- One Bryant Parkscore 62
Financial Office · 2,237,686 sq ft
- 1211 Avenue of the Americasscore 56
Office · 2,023,847 sq ft
- 1211 Avenue of the Americasscore —
Office · 2,005,345 sq ft
See also: most efficient in New York City · biggest emitters
How does 100 Park Avenue 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. 100 Park Avenue's ENERGY STAR score of 78 compares with an average of 72 across the 2,519 that report a score; it scores higher than 48% of them and lower than 50%. Its site EUI of 49.5 kBtu/ft² is about 23% 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 4.9 kgCO₂e/ft² is about 15% below the group average of 5.8 kgCO₂e/ft².
At 845,387 sq ft, it is about 312% above the average floor area of 205,440 sq ft for those buildings. It was built in 1949, 9 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 100 Park Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 100 Park Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 76 in 2022 to 78 in 2024 (+2 points); its best year on file was 2023, at 81. Site EUI moved from 55.7 kBtu/ft² (2022) to 49.5 kBtu/ft² (2024), a 11% decrease. Reported emissions went from 3,782 tCO₂e to 4,149 tCO₂e over the same span (up 10%).
What does an ENERGY STAR score of 78 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 78 means the building performs better than about 78% of its national peers. BuildingCensus bands the score into report-card grades; 78 falls in band B — above median (70–84). 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. 100 Park Avenue's 49.5 kBtu/ft² across 845,387 sq ft works out to about 41.8 billion Btu (12,264 MWh-equivalent) in 2024. Its source EUI of 113.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 8,362,034 kWh of electricity, 13,612 therms of natural gas and 7,288 thousand gallons of water for the year.
Which law requires 100 Park Avenue to report its energy use?
100 Park Avenue 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:2712431:2024). 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
- ESRT - 1400 Broadway (1392 BROADWAY)· 831,071 sq ft · score 85 (A)
- 31 West Fifty Second· 814,121 sq ft · score 74 (B)
- (p) 520 8th Ave· 814,025 sq ft · EUI 45.7 kBtu/ft²
- ESRT - 111 West 33rd Street (112 WEST 34 STREET)· 806,417 sq ft · score 87 (A)
- 330 Madison Avenue· 806,272 sq ft
- 375 Pearl Street - data· 805,989 sq ft · score 2 (D)
- 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 100 Park Avenue's energy grade?
100 Park Avenue scores 78 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 100 Park Avenue use?
Its 2024 site energy-use intensity was 49.5 kBtu/ft² (113.2 kBtu/ft² source) across 845,387 sq ft, including 8,362,034 kWh of electricity and 13,612 therms of natural gas.
What are 100 Park Avenue's carbon emissions?
100 Park Avenue reported 4,149 tCO₂e of greenhouse-gas emissions (4.9 kgCO₂e/ft²) for 2024.
Where is 100 Park Avenue?
100 Park Avenue is in New York City, New York 10017. Its coordinates are 40.75100, -73.97850 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 100 Park Avenue and when was it built?
100 Park Avenue has 845,387 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1949 as its year built. It is classed as office.
Is 100 Park Avenue 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, “100 Park Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/100-park-avenue-54be2d54 (data as of October 2, 2026).