817 Fifth Ave
Multifamily Housing in New York City, NY · 817 5TH AVE. · 10065
At a glance
817 Fifth Ave is a 53,839-square-foot multifamily housing building at 817 5TH AVE. in New York City, New York, built in 1925. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 69.8 kBtu/ft² and 312 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 69.8 kBtu/ft² |
| Source EUI | 122.1 kBtu/ft² |
| GHG emissions | 312 tCO₂e |
| GHG intensity | 5.8 kgCO₂e/ft² |
| Electricity | 376,798 kWh |
| Natural gas | 220 therms |
| Gross floor area | 53,839 sq ft |
| Source record | nyc:2669885:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 69.8 kBtu/ft² | 312 tCO₂e | |
| 2023 | — | 68.2 kBtu/ft² | 300 tCO₂e | |
| 2022 | — | 78.7 kBtu/ft² | 308 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
- 817 5TH AVE.
- City
- New York City
- State
- New York
- ZIP
- 10065
- Coordinates
- 40.76656, -73.97096
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 817 Fifth 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 69.8 kBtu/ft² is roughly in line with 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 5.8 kgCO₂e/ft² is about 11% above the group average of 5.2 kgCO₂e/ft².
At 53,839 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1925, 27 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 817 Fifth Ave's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 817 Fifth Ave, covering report years 2022–2024. Site EUI moved from 78.7 kBtu/ft² (2022) to 69.8 kBtu/ft² (2024), a 11% decrease. Reported emissions went from 308 tCO₂e to 312 tCO₂e over the same span (up 1%).
What does a site EUI of 69.8 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. 817 Fifth Ave's 69.8 kBtu/ft² across 53,839 sq ft works out to about 3.8 billion Btu (1,101 MWh-equivalent) in 2024. Its source EUI of 122.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 376,798 kWh of electricity and 220 therms of natural gas for the year.
Which law requires 817 Fifth Ave to report its energy use?
817 Fifth 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:2669885:2024). 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
- Wavecrest PARENT - 450 West 131St Street / 456 Rear West 131 Street· 53,835 sq ft · score 37 (D)
- FULTON ST.· 53,832 sq ft · score 100 (A)
- 605 West 161st Street· 53,832 sq ft · score 70 (B)
- KM 596 Riverside Drive· 53,832 sq ft · score 8 (D)
- (896) - 315 West 99th Street· 53,832 sq ft · score 85 (A)
- Lee Goodwin Residence· 53,822 sq ft · score 8 (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 817 Fifth Ave's energy grade?
817 Fifth Ave did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 69.8 kBtu/ft².
How much energy does 817 Fifth Ave use?
Its 2024 site energy-use intensity was 69.8 kBtu/ft² (122.1 kBtu/ft² source) across 53,839 sq ft, including 376,798 kWh of electricity and 220 therms of natural gas.
What are 817 Fifth Ave's carbon emissions?
817 Fifth Ave reported 312 tCO₂e of greenhouse-gas emissions (5.8 kgCO₂e/ft²) for 2024.
Where is 817 Fifth Ave?
817 Fifth Ave is at 817 5TH AVE., in New York City, New York 10065. Its coordinates are 40.76656, -73.97096 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 817 Fifth Ave and when was it built?
817 Fifth Ave has 53,839 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1925 as its year built. It is classed as multifamily housing.
Is 817 Fifth 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, “817 Fifth Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/817-fifth-ave-50c9a8e3 (data as of October 2, 2026).