DEPM 1284 - 650 Park Ave
Multifamily Housing in New York City, NY · 646 Park Avenue · 10065
At a glance
DEPM 1284 - 650 Park Ave is a 211,883-square-foot multifamily housing building at 646 Park Avenue in New York City, New York, built in 1963. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 42.8 kBtu/ft² and 835 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 42.8 kBtu/ft² |
| Source EUI | 87.7 kBtu/ft² |
| GHG emissions | 835 tCO₂e |
| GHG intensity | 3.9 kgCO₂e/ft² |
| Electricity | 1,408,089 kWh |
| Natural gas | 1,202 therms |
| Gross floor area | 211,883 sq ft |
| Source record | nyc:3107161:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 42.8 kBtu/ft² | 835 tCO₂e | |
| 2023 | 58 | -2 | 65.7 kBtu/ft² | 1,181 tCO₂e |
| 2022 | 60 | 68.8 kBtu/ft² | 1,136 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
- 646 Park Avenue
- City
- New York City
- State
- New York
- ZIP
- 10065
- Coordinates
- 40.76758, -73.96640
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does DEPM 1284 - 650 Park Ave 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 42.8 kBtu/ft² is about 43% below the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.9 kgCO₂e/ft² is about 24% below the group average of 5.2 kgCO₂e/ft².
At 211,883 sq ft, it is about twice the average floor area of 100,951 sq ft for those buildings. It was built in 1963, 11 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 DEPM 1284 - 650 Park Ave's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for DEPM 1284 - 650 Park Ave, covering report years 2022–2024. Its ENERGY STAR score went from 60 in 2022 to 58 in 2023 (-2 points); its best year on file was 2022, at 60. Site EUI moved from 68.8 kBtu/ft² (2022) to 42.8 kBtu/ft² (2024), a 38% decrease. Reported emissions went from 1,136 tCO₂e to 835 tCO₂e over the same span (down 27%).
What does a site EUI of 42.8 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. DEPM 1284 - 650 Park Ave's 42.8 kBtu/ft² across 211,883 sq ft works out to about 9.1 billion Btu (2,658 MWh-equivalent) in 2024. Its source EUI of 87.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,408,089 kWh of electricity and 1,202 therms of natural gas for the year.
Which law requires DEPM 1284 - 650 Park Ave to report its energy use?
DEPM 1284 - 650 Park Ave 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:3107161:2024). 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 multifamily housing buildings in New York City
- 2928 West 5th Street· 211,824 sq ft
- 2930 West 5th Street· 211,824 sq ft
- 2932 West 5th Street· 211,823 sq ft
- DEPM 1184 PARENT - 203 East 72nd St· 211,721 sq ft · score 5 (D)
- Park House· 211,520 sq ft · score 74 (B)
- 159-10 71st Avenue· 211,431 sq ft
- 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 DEPM 1284 - 650 Park Ave's energy grade?
DEPM 1284 - 650 Park Ave did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 42.8 kBtu/ft².
How much energy does DEPM 1284 - 650 Park Ave use?
Its 2024 site energy-use intensity was 42.8 kBtu/ft² (87.7 kBtu/ft² source) across 211,883 sq ft, including 1,408,089 kWh of electricity and 1,202 therms of natural gas.
What are DEPM 1284 - 650 Park Ave's carbon emissions?
DEPM 1284 - 650 Park Ave reported 835 tCO₂e of greenhouse-gas emissions (3.9 kgCO₂e/ft²) for 2024.
Where is DEPM 1284 - 650 Park Ave?
DEPM 1284 - 650 Park Ave is at 646 Park Avenue, in New York City, New York 10065. Its coordinates are 40.76758, -73.96640 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is DEPM 1284 - 650 Park Ave and when was it built?
DEPM 1284 - 650 Park Ave has 211,883 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1963 as its year built. It is classed as multifamily housing.
Is DEPM 1284 - 650 Park Ave 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, “DEPM 1284 - 650 Park Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/depm-1284-650-park-ave-d85e5385 (data as of October 2, 2026).