20 West 77th Street Corp. (20 W 77 Street)
Multifamily Housing in New York City, NY · 20 W 77 Street · 10024
At a glance
20 West 77th Street Corp. (20 W 77 Street) is a 58,405-square-foot multifamily housing building in New York City, New York, built in 1980. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 97 out of 100 (grade A), a site energy-use intensity of 48.3 kBtu/ft² and 237 tCO₂e of greenhouse-gas emissions. That score is higher than 86% 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 | 97 (band A) |
| Site EUI | 48.3 kBtu/ft² |
| Source EUI | 69.9 kBtu/ft² |
| GHG emissions | 237 tCO₂e |
| GHG intensity | 4.1 kgCO₂e/ft² |
| Electricity | 201,378 kWh |
| Natural gas | 231 therms |
| Gross floor area | 58,405 sq ft |
| Source record | nyc:2637924:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 97 | -1 | 48.3 kBtu/ft² | 237 tCO₂e |
| 2023 | 98 | +1 | 47.0 kBtu/ft² | 227 tCO₂e |
| 2022 | 97 | 52.1 kBtu/ft² | 234 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
- 20 W 77 Street
- City
- New York City
- State
- New York
- ZIP
- 10024
- Coordinates
- 40.77985, -73.97450
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 20 West 77th Street Corp. (20 W 77 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. 20 West 77th Street Corp. (20 W 77 Street)'s ENERGY STAR score of 97 compares with an average of 63 across the 22,829 that report a score; it scores higher than 86% of them and lower than 13%. Its site EUI of 48.3 kBtu/ft² is about 36% 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 4.1 kgCO₂e/ft² is about 22% below the group average of 5.2 kgCO₂e/ft².
At 58,405 sq ft, it is about 42% below the average floor area of 100,951 sq ft for those buildings. It was built in 1980, 28 years later 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 20 West 77th Street Corp. (20 W 77 Street)'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 20 West 77th Street Corp. (20 W 77 Street), covering report years 2022–2024. Its ENERGY STAR score was 97 in both 2022 and 2024. Site EUI moved from 52.1 kBtu/ft² (2022) to 48.3 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 234 tCO₂e to 237 tCO₂e over the same span (up 1%).
What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. 20 West 77th Street Corp. (20 W 77 Street)'s 48.3 kBtu/ft² across 58,405 sq ft works out to about 2.8 billion Btu (827 MWh-equivalent) in 2024. Its source EUI of 69.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 201,378 kWh of electricity and 231 therms of natural gas for the year.
Which law requires 20 West 77th Street Corp. (20 W 77 Street) to report its energy use?
20 West 77th Street Corp. (20 W 77 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:2637924:2024). 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.
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Frequently asked questions
What is 20 West 77th Street Corp. (20 W 77 Street)'s energy grade?
20 West 77th Street Corp. (20 W 77 Street) scores 97 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 20 West 77th Street Corp. (20 W 77 Street) use?
Its 2024 site energy-use intensity was 48.3 kBtu/ft² (69.9 kBtu/ft² source) across 58,405 sq ft, including 201,378 kWh of electricity and 231 therms of natural gas.
What are 20 West 77th Street Corp. (20 W 77 Street)'s carbon emissions?
20 West 77th Street Corp. (20 W 77 Street) reported 237 tCO₂e of greenhouse-gas emissions (4.1 kgCO₂e/ft²) for 2024.
Where is 20 West 77th Street Corp. (20 W 77 Street)?
20 West 77th Street Corp. (20 W 77 Street) is in New York City, New York 10024. Its coordinates are 40.77985, -73.97450 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 20 West 77th Street Corp. (20 W 77 Street) and when was it built?
20 West 77th Street Corp. (20 W 77 Street) has 58,405 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1980 as its year built. It is classed as multifamily housing.
Is 20 West 77th Street Corp. (20 W 77 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, “20 West 77th Street Corp. (20 W 77 Street), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/20-west-77th-street-corp-20-w-77-street-1274847c (data as of October 2, 2026).