345 Park Ave LP
Office in New York City, NY · 345 Park Ave · 10154
At a glance
345 Park Ave LP is a 1,783,232-square-foot office building in New York City, New York, built in 1968. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 47 out of 100 (grade D), a site energy-use intensity of 123.0 kBtu/ft² and 19,363 tCO₂e of greenhouse-gas emissions. That score is higher than 15% 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 | 47 (band D) |
| Site EUI | 123.0 kBtu/ft² |
| Source EUI | 236.4 kBtu/ft² |
| GHG emissions | 19,363 tCO₂e |
| GHG intensity | 10.9 kgCO₂e/ft² |
| Electricity | 28,955,630 kWh |
| Natural gas | 8,930 therms |
| Gross floor area | 1,783,232 sq ft |
| Source record | nyc:1416310:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 47 | +1 | 123.0 kBtu/ft² | 19,363 tCO₂e |
| 2023 | 46 | +2 | 128.3 kBtu/ft² | 19,424 tCO₂e |
| 2022 | 44 | 132.2 kBtu/ft² | 18,122 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
- 345 Park Ave
- City
- New York City
- State
- New York
- ZIP
- 10154
- Coordinates
- 40.75817, -73.97325
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 345 Park Ave LP 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. 345 Park Ave LP's ENERGY STAR score of 47 compares with an average of 72 across the 2,519 that report a score; it scores higher than 15% of them and lower than 85%. Its site EUI of 123.0 kBtu/ft² is about twice the average of 64.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 10.9 kgCO₂e/ft² is about 87% above the group average of 5.8 kgCO₂e/ft².
At 1,783,232 sq ft, it is about 768% above the average floor area of 205,440 sq ft for those buildings. It was built in 1968, 28 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 345 Park Ave LP's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 345 Park Ave LP, covering report years 2022–2024. Its ENERGY STAR score went from 44 in 2022 to 47 in 2024 (+3 points). Site EUI moved from 132.2 kBtu/ft² (2022) to 123.0 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 18,122 tCO₂e to 19,363 tCO₂e over the same span (up 7%).
What does an ENERGY STAR score of 47 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 47 means the building performs better than about 47% of its national peers. BuildingCensus bands the score into report-card grades; 47 falls in band D — lowest band (1–54). It sits 28 points below 75, the threshold for ENERGY STAR certification. 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. 345 Park Ave LP's 123.0 kBtu/ft² across 1,783,232 sq ft works out to about 219.3 billion Btu (64,282 MWh-equivalent) in 2024. Its source EUI of 236.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 28,955,630 kWh of electricity and 8,930 therms of natural gas for the year.
Which law requires 345 Park Ave LP to report its energy use?
345 Park Ave LP 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:1416310:2024). 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
- 10 Hudson Yards· 1,757,325 sq ft · score 62 (C)
- 277 Park Avenue· 1,745,856 sq ft · score 55 (C)
- 7 World Trade Center, LLC· 1,731,994 sq ft · score 68 (C)
- 1285 Avenue of the Americas· 1,708,404 sq ft · score 65 (C)
- 601 Lexington Avenue (617 LEXINGTON AVE)· 1,682,110 sq ft · score 76 (B)
- 399 Park Avenue· 1,671,941 sq ft · score 69 (C)
- 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 345 Park Ave LP's energy grade?
345 Park Ave LP scores 47 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 345 Park Ave LP use?
Its 2024 site energy-use intensity was 123.0 kBtu/ft² (236.4 kBtu/ft² source) across 1,783,232 sq ft, including 28,955,630 kWh of electricity and 8,930 therms of natural gas.
What are 345 Park Ave LP's carbon emissions?
345 Park Ave LP reported 19,363 tCO₂e of greenhouse-gas emissions (10.9 kgCO₂e/ft²) for 2024.
Where is 345 Park Ave LP?
345 Park Ave LP is in New York City, New York 10154. Its coordinates are 40.75817, -73.97325 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 345 Park Ave LP and when was it built?
345 Park Ave LP has 1,783,232 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1968 as its year built. It is classed as office.
Is 345 Park Ave LP 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, “345 Park Ave LP, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/345-park-ave-lp-332c41b4 (data as of October 2, 2026).