Split Rock
Hospital (General Medical & Surgical) in New York City, NY · 3525 Baychester Avenue · 10466
At a glance
Split Rock is a 80,844-square-foot hospital (general medical & surgical) at 3525 Baychester Avenue in New York City, New York, built in 1950. In its 2022 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 189.3 kBtu/ft² and 992 tCO₂e of greenhouse-gas emissions. That score is higher than 77% of the 113 scored hospital (general medical & surgical) buildings in New York City.
Local Law 84 (LL84) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 189.3 kBtu/ft² |
| Source EUI | 322.2 kBtu/ft² |
| GHG emissions | 992 tCO₂e |
| GHG intensity | 12.3 kgCO₂e/ft² |
| Electricity | 1,671,375 kWh |
| Gross floor area | 80,844 sq ft |
| Source record | nyc:2643416:2022 |
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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 3525 Baychester Avenue
- City
- New York City
- State
- New York
- ZIP
- 10466
- Coordinates
- 40.88170, -73.83900
Within ~1 km
Nearby benchmarked buildings
- EDENWALDscore 100
Multifamily Housing · 2,003,603 sq ft
Multifamily Housing · 626,090 sq ft
Multifamily Housing · 478,259 sq ft
- BAYCHESTERscore 22
Multifamily Housing · 449,700 sq ft
Multifamily Housing · 336,240 sq ft
Multifamily Housing · 336,240 sq ft
See also: most efficient in New York City · biggest emitters
How does Split Rock 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. Split Rock's ENERGY STAR score of 100 compares with an average of 61 across the 113 that report a score; it scores higher than 77% of them. Its site EUI of 189.3 kBtu/ft² is about 24% below the average of 248.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 12.3 kgCO₂e/ft² is about 35% below the group average of 18.9 kgCO₂e/ft².
At 80,844 sq ft, it is about 82% below the average floor area of 450,487 sq ft for those buildings. Its 1950 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.
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. Split Rock's 189.3 kBtu/ft² across 80,844 sq ft works out to about 15.3 billion Btu (4,485 MWh-equivalent) in 2022. Its source EUI of 322.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,671,375 kWh of electricity for the year.
Which law requires Split Rock to report its energy use?
Split Rock 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 2022 disclosure (source record nyc:2643416:2022). 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
- NH LIJ Medical 265-31 76 Ave 4580002· 80,575 sq ft
- NYEEI South Bldg· 78,156 sq ft · score 1 (D)
- Main Hospital· 76,926 sq ft
- St. Mary's Rear Building· 76,758 sq ft
- Cooke/Villa Garner· 71,971 sq ft
- 70-35 113th Street· 71,478 sq ft · EUI 0.0 kBtu/ft²
- 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 Split Rock's energy grade?
Split Rock scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2022 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Split Rock use?
Its 2022 site energy-use intensity was 189.3 kBtu/ft² (322.2 kBtu/ft² source) across 80,844 sq ft, including 1,671,375 kWh of electricity.
What are Split Rock's carbon emissions?
Split Rock reported 992 tCO₂e of greenhouse-gas emissions (12.3 kgCO₂e/ft²) for 2022.
Where is Split Rock?
Split Rock is at 3525 Baychester Avenue, in New York City, New York 10466. Its coordinates are 40.88170, -73.83900 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Split Rock and when was it built?
Split Rock has 80,844 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1950 as its year built. It is classed as hospital (general medical & surgical).
Is Split Rock covered by Local Law 84 (LL84)?
Yes — it appears in the 2022 Energy and Water Data Disclosure disclosure, which lists the buildings reporting under Local Law 84 (LL84).
Working with New York City building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Split Rock, New York City, New York — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/split-rock-7d0c279f (data as of October 2, 2026).