One Park Avenue
Medical Office in New York City, NY · 1 PARK AVENUE · 10016
At a glance
One Park Avenue is a 809,483-square-foot medical office at 1 PARK AVENUE in New York City, New York, built in 1925. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 90 out of 100 (grade A), a site energy-use intensity of 66.0 kBtu/ft² and 5,574 tCO₂e of greenhouse-gas emissions. That score is higher than 66% of the 147 scored medical office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 90 (band A) |
| Site EUI | 66.0 kBtu/ft² |
| Source EUI | 156.6 kBtu/ft² |
| GHG emissions | 5,574 tCO₂e |
| GHG intensity | 6.9 kgCO₂e/ft² |
| Electricity | 11,872,674 kWh |
| Natural gas | 18,433 therms |
| Water use | 13,719 kgal |
| Gross floor area | 809,483 sq ft |
| Source record | nyc:2701820:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 90 | +10 | 66.0 kBtu/ft² | 5,574 tCO₂e |
| 2023 | 80 | +21 | 65.2 kBtu/ft² | 5,292 tCO₂e |
| 2022 | 59 | 74.8 kBtu/ft² | 4,976 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 PARK AVENUE
- City
- New York City
- State
- New York
- ZIP
- 10016
- Coordinates
- 40.74607, -73.98207
Within ~1 km
Nearby benchmarked buildings
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- Benchmarking Group - 212score —
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- ESRT - Empire State Buildingscore 78
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Hospital (General Medical & Surgical) · 2,276,300 sq ft
- 11 Madison Avenuescore 77
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- One Vanderbilt Avenuescore 43
Office · 1,828,353 sq ft
See also: most efficient in New York City · biggest emitters
How does One Park Avenue compare with other medical office buildings in New York City?
The latest disclosures cover 188 medical office buildings in New York City, out of 48,310 buildings citywide. One Park Avenue's ENERGY STAR score of 90 compares with an average of 65 across the 147 that report a score; it scores higher than 66% of them and lower than 33%. Its site EUI of 66.0 kBtu/ft² is about 32% below the average of 97.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 6.9 kgCO₂e/ft² is about 22% below the group average of 8.8 kgCO₂e/ft².
At 809,483 sq ft, it is about 979% above the average floor area of 75,019 sq ft for those buildings. It was built in 1925, 40 years earlier than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has One Park Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for One Park Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 59 in 2022 to 90 in 2024 (+31 points). Site EUI moved from 74.8 kBtu/ft² (2022) to 66.0 kBtu/ft² (2024), a 12% decrease. Reported emissions went from 4,976 tCO₂e to 5,574 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 90 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 90 means the building performs better than about 90% of its national peers. BuildingCensus bands the score into report-card grades; 90 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 Park Avenue's 66.0 kBtu/ft² across 809,483 sq ft works out to about 53.4 billion Btu (15,658 MWh-equivalent) in 2024. Its source EUI of 156.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 11,872,674 kWh of electricity, 18,433 therms of natural gas and 13,719 thousand gallons of water for the year.
Which law requires One Park Avenue to report its energy use?
One 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:2701820:2024). 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 medical office buildings in New York City
- Flushing Plaza· 363,663 sq ft · score 52 (D)
- WCMC - WGC (YAB) Building· 297,951 sq ft · EUI 304.3 kBtu/ft²
- 156 William Street· 247,929 sq ft · EUI 57.7 kBtu/ft²
- 1650 Selwyn Milstein Building· 243,426 sq ft · score 96 (A)
- 5 East 98th· 238,267 sq ft
- 800 2nd Avenue - data· 231,938 sq ft
- Medical Office buildings in New York City· 188 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 Park Avenue's energy grade?
One Park Avenue scores 90 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 Park Avenue use?
Its 2024 site energy-use intensity was 66.0 kBtu/ft² (156.6 kBtu/ft² source) across 809,483 sq ft, including 11,872,674 kWh of electricity and 18,433 therms of natural gas.
What are One Park Avenue's carbon emissions?
One Park Avenue reported 5,574 tCO₂e of greenhouse-gas emissions (6.9 kgCO₂e/ft²) for 2024.
Where is One Park Avenue?
One Park Avenue is at 1 PARK AVENUE, in New York City, New York 10016. Its coordinates are 40.74607, -73.98207 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is One Park Avenue and when was it built?
One Park Avenue has 809,483 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1925 as its year built. It is classed as medical office.
Is One 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, “One Park Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/one-park-avenue-3e5ef457 (data as of October 2, 2026).