66 East 79th St
Multifamily Housing in New York City, NY · 66 E. 79TH ST. · 10075
At a glance
66 East 79th St is a 61,025-square-foot multifamily housing building at 66 E. 79TH ST. in New York City, New York, built in 1926. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 89.1 kBtu/ft² and 411 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 89.1 kBtu/ft² |
| Source EUI | 134.5 kBtu/ft² |
| GHG emissions | 411 tCO₂e |
| GHG intensity | 6.7 kgCO₂e/ft² |
| Electricity | 307,060 kWh |
| Natural gas | 572 therms |
| Water use | 2,493 kgal |
| Gross floor area | 61,025 sq ft |
| Source record | nyc:2670059:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 89.1 kBtu/ft² | 411 tCO₂e | |
| 2023 | — | 77.4 kBtu/ft² | 350 tCO₂e | |
| 2022 | — | 74.4 kBtu/ft² | 317 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
- 66 E. 79TH ST.
- City
- New York City
- State
- New York
- ZIP
- 10075
- Coordinates
- 40.77599, -73.96136
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 66 East 79th St 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 89.1 kBtu/ft² is about 19% 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 6.7 kgCO₂e/ft² is about 30% above the group average of 5.2 kgCO₂e/ft².
At 61,025 sq ft, it is about 40% below the average floor area of 100,951 sq ft for those buildings. It was built in 1926, 26 years earlier 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 66 East 79th St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 66 East 79th St, covering report years 2022–2024. Site EUI moved from 74.4 kBtu/ft² (2022) to 89.1 kBtu/ft² (2024), an 20% increase. Reported emissions went from 317 tCO₂e to 411 tCO₂e over the same span (up 30%).
What does a site EUI of 89.1 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. 66 East 79th St's 89.1 kBtu/ft² across 61,025 sq ft works out to about 5.4 billion Btu (1,594 MWh-equivalent) in 2024. Its source EUI of 134.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 307,060 kWh of electricity, 572 therms of natural gas and 2,493 thousand gallons of water for the year.
Which law requires 66 East 79th St to report its energy use?
66 East 79th St 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:2670059:2024). 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
- Buchbinder: 189-193 Bleeker St (parent)· 61,014 sq ft · score 89 (A)
- Building 6 21-71 34 Ave - 4430810· 61,005 sq ft
- 3371-73 Decatur Avenue· 61,000 sq ft · score 42 (D)
- 36-06 30th Street· 61,000 sq ft · score 13 (D)
- 198 Johnson Ave - 36850· 61,000 sq ft · score 72 (B)
- Triborough Pres LLC (Milbank-Fawley) (2126milb) - 1080650· 61,000 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 66 East 79th St's energy grade?
66 East 79th St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 89.1 kBtu/ft².
How much energy does 66 East 79th St use?
Its 2024 site energy-use intensity was 89.1 kBtu/ft² (134.5 kBtu/ft² source) across 61,025 sq ft, including 307,060 kWh of electricity and 572 therms of natural gas.
What are 66 East 79th St's carbon emissions?
66 East 79th St reported 411 tCO₂e of greenhouse-gas emissions (6.7 kgCO₂e/ft²) for 2024.
Where is 66 East 79th St?
66 East 79th St is at 66 E. 79TH ST., in New York City, New York 10075. Its coordinates are 40.77599, -73.96136 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 66 East 79th St and when was it built?
66 East 79th St has 61,025 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as multifamily housing.
Is 66 East 79th St 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, “66 East 79th St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/66-east-79th-st-62f19a3c (data as of October 2, 2026).