HSS - Main Hospital
Hospital (General Medical & Surgical) in New York City, NY · 535 E 70th St · 10021
At a glance
HSS - Main Hospital is a 528,808-square-foot hospital (general medical & surgical) at 535 E 70th St in New York City, New York, built in 1955. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 12 out of 100 (grade D), a site energy-use intensity of 256.5 kBtu/ft² and 12,615 tCO₂e of greenhouse-gas emissions. That score is higher than 15% of the 113 scored hospital (general medical & surgical) buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 12 (band D) |
| Site EUI | 256.5 kBtu/ft² |
| Source EUI | 532.4 kBtu/ft² |
| GHG emissions | 12,615 tCO₂e |
| GHG intensity | 23.9 kgCO₂e/ft² |
| Electricity | 21,720,323 kWh |
| Water use | 60,333 kgal |
| Gross floor area | 528,808 sq ft |
| Source record | nyc:2795476:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 12 | -21 | 256.5 kBtu/ft² | 12,615 tCO₂e |
| 2023 | 33 | 226.1 kBtu/ft² | 11,271 tCO₂e | |
| 2022 | — | 124.1 kBtu/ft² | 5,937 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
- 535 E 70th St
- City
- New York City
- State
- New York
- ZIP
- 10021
- Coordinates
- 40.76521, -73.95389
Within ~1 km
Nearby benchmarked buildings
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Other - Specialty Hospital · 2,490,355 sq ft
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- Weill Cornell Medical Centerscore —
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See also: most efficient in New York City · biggest emitters
How does HSS - Main Hospital compare with other hospital (general medical & surgical) buildings in New York City?
The latest disclosures cover 226 hospital (general medical & surgical) buildings in New York City, out of 48,310 buildings citywide. HSS - Main Hospital's ENERGY STAR score of 12 compares with an average of 61 across the 113 that report a score; it scores higher than 15% of them and lower than 82%. Its site EUI of 256.5 kBtu/ft² is roughly in line with the average of 248.6 kBtu/ft². Its emissions intensity of 23.9 kgCO₂e/ft² is about 26% above the group average of 18.9 kgCO₂e/ft².
At 528,808 sq ft, it is about 17% above the average floor area of 450,487 sq ft for those buildings. Its 1955 construction date is close to the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 748 hospital (general medical & surgical) buildings average an ENERGY STAR score of 59 and a site EUI of 238.7 kBtu/ft².
How has HSS - Main Hospital's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for HSS - Main Hospital, covering report years 2022–2024. Its ENERGY STAR score went from 33 in 2023 to 12 in 2024 (-21 points); its best year on file was 2023, at 33. Site EUI moved from 124.1 kBtu/ft² (2022) to 256.5 kBtu/ft² (2024), an 107% increase. Reported emissions went from 5,937 tCO₂e to 12,615 tCO₂e over the same span (up 112%).
What does an ENERGY STAR score of 12 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 12 means the building performs better than about 12% of its national peers. BuildingCensus bands the score into report-card grades; 12 falls in band D — lowest band (1–54). It sits 63 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. HSS - Main Hospital's 256.5 kBtu/ft² across 528,808 sq ft works out to about 135.6 billion Btu (39,752 MWh-equivalent) in 2024. Its source EUI of 532.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 21,720,323 kWh of electricity and 60,333 thousand gallons of water for the year.
Which law requires HSS - Main Hospital to report its energy use?
HSS - Main Hospital 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:2795476:2024). 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 hospital (general medical & surgical) buildings in New York City
- The Wakefield Hospital Campus· 527,197 sq ft · score 56 (C)
- NYU Langone Hospital - Brooklyn· 525,896 sq ft · score 53 (D)
- One Brooklyn Health - 1 Brookdale Plaza· 511,776 sq ft · score 72 (B)
- NH LIJ Medical 270-05 76 Ave 4439540· 507,089 sq ft · score 100 (A)
- Jamaica Hospital - Axel· 487,000 sq ft · score 100 (A)
- Main-West Wing-Annex· 482,424 sq ft
- Hospital (General Medical & Surgical) buildings in New York City· 226 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 HSS - Main Hospital's energy grade?
HSS - Main Hospital scores 12 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 HSS - Main Hospital use?
Its 2024 site energy-use intensity was 256.5 kBtu/ft² (532.4 kBtu/ft² source) across 528,808 sq ft, including 21,720,323 kWh of electricity.
What are HSS - Main Hospital's carbon emissions?
HSS - Main Hospital reported 12,615 tCO₂e of greenhouse-gas emissions (23.9 kgCO₂e/ft²) for 2024.
Where is HSS - Main Hospital?
HSS - Main Hospital is at 535 E 70th St, in New York City, New York 10021. Its coordinates are 40.76521, -73.95389 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is HSS - Main Hospital and when was it built?
HSS - Main Hospital has 528,808 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1955 as its year built. It is classed as hospital (general medical & surgical).
Is HSS - Main Hospital 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, “HSS - Main Hospital, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/hss-main-hospital-8374c4ea (data as of October 2, 2026).