21 East 79th Street
Multifamily Housing in New York City, NY · 10009
At a glance
21 East 79th Street is a 56,017-square-foot multifamily housing building in New York City, New York, built in 1930.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Natural gas | 404 therms |
| Gross floor area | 56,017 sq ft |
| Source record | nyc:9636007:2023 |
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
- 21 East 79th Street
- City
- New York City
- State
- New York
- ZIP
- 10009
- Coordinates
- 40.77661, -73.96278
Within ~1 km
Nearby benchmarked buildings
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Multifamily Housing · 1,047,938 sq ft
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College/University · 854,879 sq ft
- NH Lenox Hill Hospital Campusscore 64
Hospital (General Medical & Surgical) · 850,896 sq ft
College/University · 751,718 sq ft
See also: most efficient in New York City · biggest emitters
How does 21 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.
At 56,017 sq ft, it is about 45% below the average floor area of 100,951 sq ft for those buildings. It was built in 1930, 22 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.
Which law requires 21 East 79th Street to report its energy use?
21 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 2023 disclosure (source record nyc:9636007:2023). 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
- 15 GRAMERCY PARK SOUTH· 56,010 sq ft
- 15 W 55th Street· 56,005 sq ft · score 70 (B)
- 13-17 West 55th Street· 56,005 sq ft · score 69 (C)
- LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE· 56,000 sq ft · score 67 (C)
- MP Management - 3110 Brighton 3rd St· 56,000 sq ft · score 67 (C)
- 4116-18 CARPENTER AVE.· 56,000 sq ft · score 41 (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 21 East 79th Street's energy grade?
21 East 79th Street did not report an ENERGY STAR score in its 2023 disclosure.
How much energy does 21 East 79th Street use?
No energy-use intensity was reported for 2023.
What are 21 East 79th Street's carbon emissions?
No greenhouse-gas emissions figure was reported for 2023.
Where is 21 East 79th Street?
21 East 79th Street is in New York City, New York 10009. Its coordinates are 40.77661, -73.96278 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 21 East 79th Street and when was it built?
21 East 79th Street has 56,017 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1930 as its year built. It is classed as multifamily housing.
Is 21 East 79th Street 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, “21 East 79th Street, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/21-east-79th-street-e606ac3b (data as of October 2, 2026).