31 East 79th St
Multifamily Housing in New York City, NY · 1040 MADISON AVE. · 10075
At a glance
31 East 79th St is a 68,572-square-foot multifamily housing building at 1040 MADISON 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 55.6 kBtu/ft² and 306 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 55.6 kBtu/ft² |
| Source EUI | 92.3 kBtu/ft² |
| GHG emissions | 306 tCO₂e |
| GHG intensity | 4.5 kgCO₂e/ft² |
| Electricity | 319,222 kWh |
| Natural gas | 207 therms |
| Water use | 907 kgal |
| Gross floor area | 68,572 sq ft |
| Source record | nyc:2669656:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 55.6 kBtu/ft² | 306 tCO₂e | |
| 2023 | — | 53.9 kBtu/ft² | 288 tCO₂e | |
| 2022 | — | 55.6 kBtu/ft² | 271 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
- 1040 MADISON AVE.
- City
- New York City
- State
- New York
- ZIP
- 10075
- Coordinates
- 40.77658, -73.96194
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 31 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 55.6 kBtu/ft² is about 26% 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 4.5 kgCO₂e/ft² is about 14% below the group average of 5.2 kgCO₂e/ft².
At 68,572 sq ft, it is about 32% 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 31 East 79th St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 31 East 79th St, covering report years 2022–2024. Site EUI moved from 55.6 kBtu/ft² (2022) to 55.6 kBtu/ft² (2024), an 0% increase. Reported emissions went from 271 tCO₂e to 306 tCO₂e over the same span (up 13%).
What does a site EUI of 55.6 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. 31 East 79th St's 55.6 kBtu/ft² across 68,572 sq ft works out to about 3.8 billion Btu (1,117 MWh-equivalent) in 2024. Its source EUI of 92.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 319,222 kWh of electricity, 207 therms of natural gas and 907 thousand gallons of water for the year.
Which law requires 31 East 79th St to report its energy use?
31 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:2669656:2024). 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
- 2460 Davidson Avenue· 68,570 sq ft · score 8 (D)
- 230-238 East 48th Street· 68,564 sq ft · score 91 (A)
- Wavecrest - 70 Bruckner Boulevard· 68,554 sq ft · score 38 (D)
- Livonia Commons Phase II· 68,554 sq ft · EUI 49.7 kBtu/ft²
- 387 Ocean Parkway· 68,544 sq ft · score 84 (B)
- 1045 Park Avenue· 68,542 sq ft · score 50 (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 31 East 79th St's energy grade?
31 East 79th St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 55.6 kBtu/ft².
How much energy does 31 East 79th St use?
Its 2024 site energy-use intensity was 55.6 kBtu/ft² (92.3 kBtu/ft² source) across 68,572 sq ft, including 319,222 kWh of electricity and 207 therms of natural gas.
What are 31 East 79th St's carbon emissions?
31 East 79th St reported 306 tCO₂e of greenhouse-gas emissions (4.5 kgCO₂e/ft²) for 2024.
Where is 31 East 79th St?
31 East 79th St is at 1040 MADISON AVE., in New York City, New York 10075. Its coordinates are 40.77658, -73.96194 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 31 East 79th St and when was it built?
31 East 79th St has 68,572 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 31 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, “31 East 79th St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/31-east-79th-st-7797c63e (data as of October 2, 2026).