323 Park Avenue South
Multifamily Housing in New York City, NY · 10010
At a glance
323 Park Avenue South is a 31,410-square-foot multifamily housing building in New York City, New York, built in 2013. In its 2023 New York City benchmarking disclosure it reported a site energy-use intensity of 91.7 kBtu/ft² and 261 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 91.7 kBtu/ft² |
| Source EUI | 204.0 kBtu/ft² |
| GHG emissions | 261 tCO₂e |
| GHG intensity | 8.3 kgCO₂e/ft² |
| Electricity | 566,896 kWh |
| Natural gas | 9,446 therms |
| Gross floor area | 31,410 sq ft |
| Source record | nyc:26575472:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | — | 91.7 kBtu/ft² | 261 tCO₂e | |
| 2022 | — | 114.9 kBtu/ft² | 263 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
- 323 Park Avenue South
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.74094, -73.98580
Within ~1 km
Nearby benchmarked buildings
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- 51 Madisonscore 79
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- One Madison Avenuescore —
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See also: most efficient in New York City · biggest emitters
How does 323 Park Avenue South compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 91.7 kBtu/ft² is about 22% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.3 kgCO₂e/ft² is about 60% above the group average of 5.2 kgCO₂e/ft².
At 31,410 sq ft, it is about 69% below the average floor area of 100,951 sq ft for those buildings. It was built in 2013, 61 years later than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 323 Park Avenue South's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 323 Park Avenue South, covering report years 2022–2023. Site EUI moved from 114.9 kBtu/ft² (2022) to 91.7 kBtu/ft² (2023), a 20% decrease. Reported emissions went from 263 tCO₂e to 261 tCO₂e over the same span (down 1%).
What does a site EUI of 91.7 kBtu/ft² mean?
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. 323 Park Avenue South's 91.7 kBtu/ft² across 31,410 sq ft works out to about 2.9 billion Btu (844 MWh-equivalent) in 2023. Its source EUI of 204.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 566,896 kWh of electricity and 9,446 therms of natural gas for the year.
Which law requires 323 Park Avenue South to report its energy use?
323 Park Avenue 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 2023 disclosure (source record nyc:26575472:2023). 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 multifamily housing buildings in New York City
- Andrews: 710 Broadway· 31,406 sq ft · EUI 46.5 kBtu/ft²
- Division: 7 Essex St.· 31,406 sq ft · EUI 53.2 kBtu/ft²
- Metropolitan Realty : 1640 Amsterdam· 31,404 sq ft · score 100 (A)
- FRANKLIN AVENUE III CONVENTIONAL· 31,400 sq ft · score 100 (A)
- 1225 Stratford Avenue· 31,400 sq ft · score 99 (A)
- 1235 Stratford Avenue· 31,400 sq ft · score 1 (D)
- Multifamily Housing buildings in New York City· 33,022 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 323 Park Avenue South's energy grade?
323 Park Avenue South did not report an ENERGY STAR score in its 2023 disclosure, but its site energy-use intensity was 91.7 kBtu/ft².
How much energy does 323 Park Avenue South use?
Its 2023 site energy-use intensity was 91.7 kBtu/ft² (204.0 kBtu/ft² source) across 31,410 sq ft, including 566,896 kWh of electricity and 9,446 therms of natural gas.
What are 323 Park Avenue South's carbon emissions?
323 Park Avenue South reported 261 tCO₂e of greenhouse-gas emissions (8.3 kgCO₂e/ft²) for 2023.
Where is 323 Park Avenue South?
323 Park Avenue South is in New York City, New York 10010. Its coordinates are 40.74094, -73.98580 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 323 Park Avenue South and when was it built?
323 Park Avenue South has 31,410 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2013 as its year built. It is classed as multifamily housing.
Is 323 Park Avenue South covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “323 Park Avenue South, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/323-park-avenue-south-b71e6e4f (data as of October 2, 2026).