505 East 79th Street - data
Multifamily Housing in New York City, NY · 505 East 79th Street · 10075
At a glance
505 East 79th Street - data is a 260,000-square-foot multifamily housing building in New York City, New York, built in 1963. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 48 out of 100 (grade D), a site energy-use intensity of 81.1 kBtu/ft² and 1,370 tCO₂e of greenhouse-gas emissions. That score is higher than 30% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 48 (band D) |
| Site EUI | 81.1 kBtu/ft² |
| Source EUI | 115.4 kBtu/ft² |
| GHG emissions | 1,370 tCO₂e |
| GHG intensity | 5.3 kgCO₂e/ft² |
| Electricity | 1,314,841 kWh |
| Natural gas | 166,039 therms |
| Gross floor area | 260,000 sq ft |
| Source record | nyc:29770202:2023 |
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
- 505 East 79th Street
- City
- New York City
- State
- New York
- ZIP
- 10075
- Coordinates
- 40.77119, -73.94993
Within ~1 km
Nearby benchmarked buildings
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- Weill Cornell Medical Centerscore —
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See also: most efficient in New York City · biggest emitters
How does 505 East 79th Street - data 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. 505 East 79th Street - data's ENERGY STAR score of 48 compares with an average of 63 across the 22,829 that report a score; it scores higher than 30% of them and lower than 69%. Its site EUI of 81.1 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 5.3 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 260,000 sq ft, it is about 158% above 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.
What does an ENERGY STAR score of 48 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 48 means the building performs better than about 48% of its national peers. BuildingCensus bands the score into report-card grades; 48 falls in band D — lowest band (1–54). It sits 27 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. 505 East 79th Street - data's 81.1 kBtu/ft² across 260,000 sq ft works out to about 21.1 billion Btu (6,180 MWh-equivalent) in 2023. Its source EUI of 115.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,314,841 kWh of electricity and 166,039 therms of natural gas for the year.
Which law requires 505 East 79th Street - data to report its energy use?
505 East 79th Street - data 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:29770202:2023). 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
- 8701 Shore Road· 259,918 sq ft · score 87 (A)
- 10 West End Avenue· 259,839 sq ft
- 44-35 Purves Street· 259,805 sq ft · score 45 (D)
- 44-41 Purves Street· 259,805 sq ft · score 35 (D)
- 250 West 96th Street· 259,728 sq ft · score 92 (A)
- 23 West / M-H REALTY LLC· 259,713 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 505 East 79th Street - data's energy grade?
505 East 79th Street - data scores 48 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 505 East 79th Street - data use?
Its 2023 site energy-use intensity was 81.1 kBtu/ft² (115.4 kBtu/ft² source) across 260,000 sq ft, including 1,314,841 kWh of electricity and 166,039 therms of natural gas.
What are 505 East 79th Street - data's carbon emissions?
505 East 79th Street - data reported 1,370 tCO₂e of greenhouse-gas emissions (5.3 kgCO₂e/ft²) for 2023.
Where is 505 East 79th Street - data?
505 East 79th Street - data is in New York City, New York 10075. Its coordinates are 40.77119, -73.94993 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 505 East 79th Street - data and when was it built?
505 East 79th Street - data has 260,000 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1963 as its year built. It is classed as multifamily housing.
Is 505 East 79th Street - data 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, “505 East 79th Street - data, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/505-east-79th-street-data-3ce91510 (data as of October 2, 2026).