49 East 79th Street
Multifamily Housing in New York City, NY · 1033 MADISON AVENUE · 10075
At a glance
49 East 79th Street is a 78,177-square-foot multifamily housing building at 1033 MADISON AVENUE 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 52.9 kBtu/ft² and 340 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 52.9 kBtu/ft² |
| Source EUI | 91.3 kBtu/ft² |
| GHG emissions | 340 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 399,349 kWh |
| Natural gas | 687 therms |
| Gross floor area | 78,177 sq ft |
| Source record | nyc:5853032:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 52.9 kBtu/ft² | 340 tCO₂e | |
| 2023 | 63 | +9 | 58.9 kBtu/ft² | 353 tCO₂e |
| 2022 | 54 | 69.7 kBtu/ft² | 375 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
- 1033 MADISON AVENUE
- City
- New York City
- State
- New York
- ZIP
- 10075
- Coordinates
- 40.77648, -73.96200
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 49 East 79th Street 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 52.9 kBtu/ft² is about 29% 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 4.3 kgCO₂e/ft² is about 16% below the group average of 5.2 kgCO₂e/ft².
At 78,177 sq ft, it is about 23% below 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 49 East 79th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 49 East 79th Street, covering report years 2022–2024. Its ENERGY STAR score went from 54 in 2022 to 63 in 2023 (+9 points). Site EUI moved from 69.7 kBtu/ft² (2022) to 52.9 kBtu/ft² (2024), a 24% decrease. Reported emissions went from 375 tCO₂e to 340 tCO₂e over the same span (down 9%).
What does a site EUI of 52.9 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. 49 East 79th Street's 52.9 kBtu/ft² across 78,177 sq ft works out to about 4.1 billion Btu (1,212 MWh-equivalent) in 2024. Its source EUI of 91.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 399,349 kWh of electricity and 687 therms of natural gas for the year.
Which law requires 49 East 79th Street to report its energy use?
49 East 79th Street 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:5853032:2024). 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
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- 29-30 138 STREET· 78,150 sq ft
- 29-49 137 STREET· 78,150 sq ft
- AKAM - 579 West 215th Street· 78,130 sq ft · score 76 (B)
- 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 49 East 79th Street's energy grade?
49 East 79th Street did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 52.9 kBtu/ft².
How much energy does 49 East 79th Street use?
Its 2024 site energy-use intensity was 52.9 kBtu/ft² (91.3 kBtu/ft² source) across 78,177 sq ft, including 399,349 kWh of electricity and 687 therms of natural gas.
What are 49 East 79th Street's carbon emissions?
49 East 79th Street reported 340 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is 49 East 79th Street?
49 East 79th Street is at 1033 MADISON AVENUE, in New York City, New York 10075. Its coordinates are 40.77648, -73.96200 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 49 East 79th Street and when was it built?
49 East 79th Street has 78,177 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 49 East 79th Street 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, “49 East 79th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/49-east-79th-street-8c06f47b (data as of October 2, 2026).