89 Porter Avenue
Residential Care Facility in New York City, NY · 11237
At a glance
89 Porter Avenue is a 71,000-square-foot residential care facility in New York City, New York, built in 1931. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 113.6 kBtu/ft² and 601 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 113.6 kBtu/ft² |
| Source EUI | 188.1 kBtu/ft² |
| GHG emissions | 601 tCO₂e |
| GHG intensity | 8.5 kgCO₂e/ft² |
| Electricity | 818,365 kWh |
| Natural gas | 52,742 therms |
| Water use | 6,461 kgal |
| Gross floor area | 71,000 sq ft |
| Source record | nyc:18305207:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 113.6 kBtu/ft² | 601 tCO₂e | |
| 2023 | — | 114.0 kBtu/ft² | 584 tCO₂e | |
| 2022 | 33 | 110.5 kBtu/ft² | 505 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
- 89 Porter Avenue
- City
- New York City
- State
- New York
- ZIP
- 11237
- Coordinates
- 40.70768, -73.92885
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 89 Porter Avenue compare with other residential care facility buildings in New York City?
The latest disclosures cover 151 residential care facility buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 113.6 kBtu/ft² is roughly in line with the average of 111.6 kBtu/ft². Its emissions intensity of 8.5 kgCO₂e/ft² is roughly in line with the group average of 8.5 kgCO₂e/ft².
At 71,000 sq ft, it is about 18% below the average floor area of 86,753 sq ft for those buildings. It was built in 1931, 37 years earlier than the group's average year built (1968). Across all 24 jurisdictions BuildingCensus covers, the 321 residential care facility buildings average an ENERGY STAR score of 41 and a site EUI of 94.2 kBtu/ft².
How has 89 Porter Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 89 Porter Avenue, covering report years 2022–2024. Site EUI moved from 110.5 kBtu/ft² (2022) to 113.6 kBtu/ft² (2024), an 3% increase. Reported emissions went from 505 tCO₂e to 601 tCO₂e over the same span (up 19%).
What does a site EUI of 113.6 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. 89 Porter Avenue's 113.6 kBtu/ft² across 71,000 sq ft works out to about 8.1 billion Btu (2,364 MWh-equivalent) in 2024. Its source EUI of 188.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 818,365 kWh of electricity, 52,742 therms of natural gas and 6,461 thousand gallons of water for the year.
Which law requires 89 Porter Avenue to report its energy use?
89 Porter Avenue 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:18305207:2024). 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 residential care facility buildings in New York City
- 510 West 46th Street· 70,931 sq ft · EUI 122.7 kBtu/ft²
- 1 Hoyt Street· 70,734 sq ft · EUI 49.1 kBtu/ft²
- ICL: 200 Tillary St.· 70,240 sq ft · EUI 57.3 kBtu/ft²
- Blake Partners - 350 Beach 54th St· 67,161 sq ft · EUI 54.6 kBtu/ft²
- 2517 BARKER AVENUE· 66,832 sq ft
- 2840 Knapp Street· 66,242 sq ft · EUI 153.4 kBtu/ft²
- Residential Care Facility buildings in New York City· 151 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 89 Porter Avenue's energy grade?
89 Porter Avenue did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 113.6 kBtu/ft².
How much energy does 89 Porter Avenue use?
Its 2024 site energy-use intensity was 113.6 kBtu/ft² (188.1 kBtu/ft² source) across 71,000 sq ft, including 818,365 kWh of electricity and 52,742 therms of natural gas.
What are 89 Porter Avenue's carbon emissions?
89 Porter Avenue reported 601 tCO₂e of greenhouse-gas emissions (8.5 kgCO₂e/ft²) for 2024.
Where is 89 Porter Avenue?
89 Porter Avenue is in New York City, New York 11237. Its coordinates are 40.70768, -73.92885 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 89 Porter Avenue and when was it built?
89 Porter Avenue has 71,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1931 as its year built. It is classed as residential care facility.
Is 89 Porter Avenue 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, “89 Porter Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/89-porter-avenue-facf03b2 (data as of October 2, 2026).