99 Park Avenue (81 PARK AVENUE)
Office in New York City, NY · 81 PARK AVENUE · 10016
At a glance
99 Park Avenue (81 PARK AVENUE) is a 654,168-square-foot office building in New York City, New York, built in 1953. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 41.0 kBtu/ft² and 2,606 tCO₂e of greenhouse-gas emissions. That score is higher than 77% 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 | 91 (band A) |
| Site EUI | 41.0 kBtu/ft² |
| Source EUI | 91.1 kBtu/ft² |
| GHG emissions | 2,606 tCO₂e |
| GHG intensity | 4.0 kgCO₂e/ft² |
| Electricity | 5,046,920 kWh |
| Natural gas | 10,414 therms |
| Water use | 8,592 kgal |
| Gross floor area | 654,168 sq ft |
| Source record | nyc:2713973:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 91 | +4 | 41.0 kBtu/ft² | 2,606 tCO₂e |
| 2023 | 87 | +18 | 48.1 kBtu/ft² | 2,646 tCO₂e |
| 2022 | 69 | 78.2 kBtu/ft² | 3,379 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
- 81 PARK AVENUE
- City
- New York City
- State
- New York
- ZIP
- 10016
- Coordinates
- 40.75012, -73.97911
Within ~1 km
Nearby benchmarked buildings
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- 1515 Broadwayscore 50
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See also: most efficient in New York City · biggest emitters
How does 99 Park Avenue (81 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. 99 Park Avenue (81 PARK AVENUE)'s ENERGY STAR score of 91 compares with an average of 72 across the 2,519 that report a score; it scores higher than 77% of them and lower than 21%. Its site EUI of 41.0 kBtu/ft² is about 36% 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 4.0 kgCO₂e/ft² is about 31% below the group average of 5.8 kgCO₂e/ft².
At 654,168 sq ft, it is about 218% above the average floor area of 205,440 sq ft for those buildings. It was built in 1953, 13 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 99 Park Avenue (81 PARK AVENUE)'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 99 Park Avenue (81 PARK AVENUE), covering report years 2022–2024. Its ENERGY STAR score went from 69 in 2022 to 91 in 2024 (+22 points). Site EUI moved from 78.2 kBtu/ft² (2022) to 41.0 kBtu/ft² (2024), a 48% decrease. Reported emissions went from 3,379 tCO₂e to 2,606 tCO₂e over the same span (down 23%).
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 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. 99 Park Avenue (81 PARK AVENUE)'s 41.0 kBtu/ft² across 654,168 sq ft works out to about 26.8 billion Btu (7,860 MWh-equivalent) in 2024. Its source EUI of 91.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 5,046,920 kWh of electricity, 10,414 therms of natural gas and 8,592 thousand gallons of water for the year.
Which law requires 99 Park Avenue (81 PARK AVENUE) to report its energy use?
99 Park Avenue (81 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:2713973:2024). 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
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- ABC 7LSQ 77W 147C· 646,685 sq ft · EUI 113.5 kBtu/ft²
- TMG - 3 Columbus Circle· 643,470 sq ft · score 77 (B)
- 85 10th Ave· 642,653 sq ft · EUI 107.0 kBtu/ft²
- 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 99 Park Avenue (81 PARK AVENUE)'s energy grade?
99 Park Avenue (81 PARK AVENUE) scores 91 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 99 Park Avenue (81 PARK AVENUE) use?
Its 2024 site energy-use intensity was 41.0 kBtu/ft² (91.1 kBtu/ft² source) across 654,168 sq ft, including 5,046,920 kWh of electricity and 10,414 therms of natural gas.
What are 99 Park Avenue (81 PARK AVENUE)'s carbon emissions?
99 Park Avenue (81 PARK AVENUE) reported 2,606 tCO₂e of greenhouse-gas emissions (4.0 kgCO₂e/ft²) for 2024.
Where is 99 Park Avenue (81 PARK AVENUE)?
99 Park Avenue (81 PARK AVENUE) is in New York City, New York 10016. Its coordinates are 40.75012, -73.97911 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 99 Park Avenue (81 PARK AVENUE) and when was it built?
99 Park Avenue (81 PARK AVENUE) has 654,168 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1953 as its year built. It is classed as office.
Is 99 Park Avenue (81 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, “99 Park Avenue (81 PARK AVENUE), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/99-park-avenue-81-park-avenue-8ae41a69 (data as of October 2, 2026).