Bishop Orris G. Walker, Jr. Health Care Center
Ambulatory Surgical Center in New York City, NY · 528 Prospect Pl · 11238
At a glance
Bishop Orris G. Walker, Jr. Health Care Center is a 30,105-square-foot ambulatory surgical center at 528 Prospect Pl in New York City, New York, built in 1900. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 122.2 kBtu/ft² and 415 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 122.2 kBtu/ft² |
| Source EUI | 334.1 kBtu/ft² |
| GHG emissions | 415 tCO₂e |
| GHG intensity | 13.8 kgCO₂e/ft² |
| Electricity | 1,037,772 kWh |
| Natural gas | 1,371 therms |
| Water use | 444 kgal |
| Gross floor area | 30,105 sq ft |
| Source record | nyc:20471050:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 122.2 kBtu/ft² | 415 tCO₂e | |
| 2022 | 100 | 125.8 kBtu/ft² | 303 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
- 528 Prospect Pl
- City
- New York City
- State
- New York
- ZIP
- 11238
- Coordinates
- 40.67557, -73.95893
Within ~1 km
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How does Bishop Orris G. Walker, Jr. Health Care Center compare with other ambulatory surgical center buildings in New York City?
The latest disclosures cover 16 ambulatory surgical center buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 122.2 kBtu/ft² is roughly in line with the average of 123.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 13.8 kgCO₂e/ft² is about 22% above the group average of 11.3 kgCO₂e/ft².
At 30,105 sq ft, it is about 85% below the average floor area of 194,611 sq ft for those buildings. It was built in 1900, 67 years earlier than the group's average year built (1967).
How has Bishop Orris G. Walker, Jr. Health Care Center's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Bishop Orris G. Walker, Jr. Health Care Center, covering report years 2022, 2024. Site EUI moved from 125.8 kBtu/ft² (2022) to 122.2 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 303 tCO₂e to 415 tCO₂e over the same span (up 37%).
What does a site EUI of 122.2 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. Bishop Orris G. Walker, Jr. Health Care Center's 122.2 kBtu/ft² across 30,105 sq ft works out to about 3.7 billion Btu (1,078 MWh-equivalent) in 2024. Its source EUI of 334.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,037,772 kWh of electricity, 1,371 therms of natural gas and 444 thousand gallons of water for the year.
Which law requires Bishop Orris G. Walker, Jr. Health Care Center to report its energy use?
Bishop Orris G. Walker, Jr. Health Care Center 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:20471050:2024). 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 ambulatory surgical center buildings in New York City
Frequently asked questions
What is Bishop Orris G. Walker, Jr. Health Care Center's energy grade?
Bishop Orris G. Walker, Jr. Health Care Center did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 122.2 kBtu/ft².
How much energy does Bishop Orris G. Walker, Jr. Health Care Center use?
Its 2024 site energy-use intensity was 122.2 kBtu/ft² (334.1 kBtu/ft² source) across 30,105 sq ft, including 1,037,772 kWh of electricity and 1,371 therms of natural gas.
What are Bishop Orris G. Walker, Jr. Health Care Center's carbon emissions?
Bishop Orris G. Walker, Jr. Health Care Center reported 415 tCO₂e of greenhouse-gas emissions (13.8 kgCO₂e/ft²) for 2024.
Where is Bishop Orris G. Walker, Jr. Health Care Center?
Bishop Orris G. Walker, Jr. Health Care Center is at 528 Prospect Pl, in New York City, New York 11238. Its coordinates are 40.67557, -73.95893 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Bishop Orris G. Walker, Jr. Health Care Center and when was it built?
Bishop Orris G. Walker, Jr. Health Care Center has 30,105 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1900 as its year built. It is classed as ambulatory surgical center.
Is Bishop Orris G. Walker, Jr. Health Care Center 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, “Bishop Orris G. Walker, Jr. Health Care Center, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/bishop-orris-g-walker-jr-health-care-center-dfd03ed2 (data as of October 2, 2026).