11 West 81st Street
Multifamily Housing in New York City, NY · 10024
At a glance
11 West 81st Street is a 46,086-square-foot multifamily housing building in New York City, New York, built in 1908. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 50 out of 100 (grade D), a site energy-use intensity of 80.7 kBtu/ft² and 305 tCO₂e of greenhouse-gas emissions. That score is higher than 32% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 50 (band D) |
| Site EUI | 80.7 kBtu/ft² |
| Source EUI | 106.8 kBtu/ft² |
| GHG emissions | 305 tCO₂e |
| GHG intensity | 6.6 kgCO₂e/ft² |
| Electricity | 190,565 kWh |
| Natural gas | 317 therms |
| Gross floor area | 46,086 sq ft |
| Source record | nyc:55273092:2024 |
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
- 11 West 81st Street
- City
- New York City
- State
- New York
- ZIP
- 10024
- Coordinates
- 40.78230, -73.97234
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 11 West 81st 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. 11 West 81st Street's ENERGY STAR score of 50 compares with an average of 63 across the 22,829 that report a score; it scores higher than 32% of them and lower than 68%. Its site EUI of 80.7 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 6.6 kgCO₂e/ft² is about 27% above the group average of 5.2 kgCO₂e/ft².
At 46,086 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1908, 44 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.
What does an ENERGY STAR score of 50 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 50 means the building performs better than about 50% of its national peers. BuildingCensus bands the score into report-card grades; 50 falls in band D — lowest band (1–54). It sits 25 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. 11 West 81st Street's 80.7 kBtu/ft² across 46,086 sq ft works out to about 3.7 billion Btu (1,090 MWh-equivalent) in 2024. Its source EUI of 106.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 190,565 kWh of electricity and 317 therms of natural gas for the year.
Which law requires 11 West 81st Street to report its energy use?
11 West 81st 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:55273092:2024). 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
- 684 East 222nd Street· 46,080 sq ft · score 43 (D)
- KM 996 Aldus Street· 46,068 sq ft · score 25 (D)
- 489 AUDUBON AVENUE· 46,065 sq ft · score 100 (A)
- 315 West 94 Street· 46,064 sq ft · score 1 (D)
- 315 West 94th Street· 46,064 sq ft · score 2 (D)
- 93-95 Greene Street· 46,055 sq ft · score 23 (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 11 West 81st Street's energy grade?
11 West 81st Street scores 50 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 11 West 81st Street use?
Its 2024 site energy-use intensity was 80.7 kBtu/ft² (106.8 kBtu/ft² source) across 46,086 sq ft, including 190,565 kWh of electricity and 317 therms of natural gas.
What are 11 West 81st Street's carbon emissions?
11 West 81st Street reported 305 tCO₂e of greenhouse-gas emissions (6.6 kgCO₂e/ft²) for 2024.
Where is 11 West 81st Street?
11 West 81st Street is in New York City, New York 10024. Its coordinates are 40.78230, -73.97234 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 11 West 81st Street and when was it built?
11 West 81st Street has 46,086 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1908 as its year built. It is classed as multifamily housing.
Is 11 West 81st 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, “11 West 81st Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/11-west-81st-street-09d26504 (data as of October 2, 2026).