451-453 Park Ave South
Office in New York City, NY · 451 Park Avenue South1915 · 10016
At a glance
451-453 Park Ave South is a 48,095-square-foot office building at 451 Park Avenue South1915 in New York City, New York, built in 1915. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 79 out of 100 (grade B), a site energy-use intensity of 49.9 kBtu/ft² and 276 tCO₂e of greenhouse-gas emissions. That score is higher than 50% 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 | 79 (band B) |
| Site EUI | 49.9 kBtu/ft² |
| Source EUI | 119.5 kBtu/ft² |
| GHG emissions | 276 tCO₂e |
| GHG intensity | 5.0 kgCO₂e/ft² |
| Electricity | 617,482 kWh |
| Natural gas | 6,305 therms |
| Water use | 180 kgal |
| Gross floor area | 48,095 sq ft |
| Source record | nyc:9496676:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 79 | +6 | 49.9 kBtu/ft² | 276 tCO₂e |
| 2023 | 73 | -3 | 55.8 kBtu/ft² | 251 tCO₂e |
| 2022 | 76 | 61.8 kBtu/ft² | 210 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
- 451 Park Avenue South1915
- City
- New York City
- State
- New York
- ZIP
- 10016
- Coordinates
- 40.74487, -73.98294
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 451-453 Park Ave South 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. 451-453 Park Ave South's ENERGY STAR score of 79 compares with an average of 72 across the 2,519 that report a score; it scores higher than 50% of them and lower than 48%. Its site EUI of 49.9 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 5.0 kgCO₂e/ft² is about 13% below the group average of 5.8 kgCO₂e/ft².
At 48,095 sq ft, it is about 77% below the average floor area of 205,440 sq ft for those buildings. It was built in 1915, 25 years earlier 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 451-453 Park Ave South's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 451-453 Park Ave South, covering report years 2022–2024. Its ENERGY STAR score went from 76 in 2022 to 79 in 2024 (+3 points). Site EUI moved from 61.8 kBtu/ft² (2022) to 49.9 kBtu/ft² (2024), a 19% decrease. Reported emissions went from 210 tCO₂e to 276 tCO₂e over the same span (up 31%).
What does an ENERGY STAR score of 79 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 79 means the building performs better than about 79% of its national peers. BuildingCensus bands the score into report-card grades; 79 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. 451-453 Park Ave South's 49.9 kBtu/ft² across 48,095 sq ft works out to about 2.4 billion Btu (703 MWh-equivalent) in 2024. Its source EUI of 119.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 617,482 kWh of electricity, 6,305 therms of natural gas and 180 thousand gallons of water for the year.
Which law requires 451-453 Park Ave South to report its energy use?
451-453 Park Ave South 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:9496676:2024). 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.
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- All New York City benchmarked buildings· Local Law 84 (LL84)
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Frequently asked questions
What is 451-453 Park Ave South's energy grade?
451-453 Park Ave South scores 79 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 451-453 Park Ave South use?
Its 2024 site energy-use intensity was 49.9 kBtu/ft² (119.5 kBtu/ft² source) across 48,095 sq ft, including 617,482 kWh of electricity and 6,305 therms of natural gas.
What are 451-453 Park Ave South's carbon emissions?
451-453 Park Ave South reported 276 tCO₂e of greenhouse-gas emissions (5.0 kgCO₂e/ft²) for 2024.
Where is 451-453 Park Ave South?
451-453 Park Ave South is at 451 Park Avenue South1915, in New York City, New York 10016. Its coordinates are 40.74487, -73.98294 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 451-453 Park Ave South and when was it built?
451-453 Park Ave South has 48,095 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1915 as its year built. It is classed as office.
Is 451-453 Park Ave South 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, “451-453 Park Ave South, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/451-453-park-ave-south-75a1fdb2 (data as of October 2, 2026).