Cornerstone Senior Housing
Multifamily Housing in New York City, NY · 550 Greene Avenue · 11216
At a glance
Cornerstone Senior Housing is a 127,750-square-foot multifamily housing building at 550 Greene Avenue in New York City, New York, built in 1984. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 88 out of 100 (grade A), a site energy-use intensity of 58.2 kBtu/ft² and 509 tCO₂e of greenhouse-gas emissions. That score is higher than 74% 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 | 88 (band A) |
| Site EUI | 58.2 kBtu/ft² |
| Source EUI | 86.3 kBtu/ft² |
| GHG emissions | 509 tCO₂e |
| GHG intensity | 4.0 kgCO₂e/ft² |
| Electricity | 536,976 kWh |
| Natural gas | 56,087 therms |
| Water use | 6,390 kgal |
| Gross floor area | 127,750 sq ft |
| Source record | nyc:4398435:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 88 | -1 | 58.2 kBtu/ft² | 509 tCO₂e |
| 2023 | 89 | +2 | 56.9 kBtu/ft² | 484 tCO₂e |
| 2022 | 87 | 63.1 kBtu/ft² | 485 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
- 550 Greene Avenue
- City
- New York City
- State
- New York
- ZIP
- 11216
- Coordinates
- 40.68867, -73.94877
Within ~1 km
Nearby benchmarked buildings
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- 940 Myrtle Avenuescore 99
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See also: most efficient in New York City · biggest emitters
How does Cornerstone Senior Housing 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. Cornerstone Senior Housing's ENERGY STAR score of 88 compares with an average of 63 across the 22,829 that report a score; it scores higher than 74% of them and lower than 25%. Its site EUI of 58.2 kBtu/ft² is about 22% 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 4.0 kgCO₂e/ft² is about 23% below the group average of 5.2 kgCO₂e/ft².
At 127,750 sq ft, it is about 27% above the average floor area of 100,951 sq ft for those buildings. It was built in 1984, 32 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 Cornerstone Senior Housing's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Cornerstone Senior Housing, covering report years 2022–2024. Its ENERGY STAR score went from 87 in 2022 to 88 in 2024 (+1 points); its best year on file was 2023, at 89. Site EUI moved from 63.1 kBtu/ft² (2022) to 58.2 kBtu/ft² (2024), a 8% decrease. Reported emissions went from 485 tCO₂e to 509 tCO₂e over the same span (up 5%).
What does an ENERGY STAR score of 88 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 88 means the building performs better than about 88% of its national peers. BuildingCensus bands the score into report-card grades; 88 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. Cornerstone Senior Housing's 58.2 kBtu/ft² across 127,750 sq ft works out to about 7.4 billion Btu (2,179 MWh-equivalent) in 2024. Its source EUI of 86.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 536,976 kWh of electricity, 56,087 therms of natural gas and 6,390 thousand gallons of water for the year.
Which law requires Cornerstone Senior Housing to report its energy use?
Cornerstone Senior Housing 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:4398435:2024). 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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- 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 Cornerstone Senior Housing's energy grade?
Cornerstone Senior Housing scores 88 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 Cornerstone Senior Housing use?
Its 2024 site energy-use intensity was 58.2 kBtu/ft² (86.3 kBtu/ft² source) across 127,750 sq ft, including 536,976 kWh of electricity and 56,087 therms of natural gas.
What are Cornerstone Senior Housing's carbon emissions?
Cornerstone Senior Housing reported 509 tCO₂e of greenhouse-gas emissions (4.0 kgCO₂e/ft²) for 2024.
Where is Cornerstone Senior Housing?
Cornerstone Senior Housing is at 550 Greene Avenue, in New York City, New York 11216. Its coordinates are 40.68867, -73.94877 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Cornerstone Senior Housing and when was it built?
Cornerstone Senior Housing has 127,750 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as multifamily housing.
Is Cornerstone Senior Housing 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, “Cornerstone Senior Housing, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/cornerstone-senior-housing-09c8d9fe (data as of October 2, 2026).