6.McMillan Hospital
Laboratory in St. Louis, MO · 4901 BARNES HOSPITAL PLAZA
At a glance
6.McMillan Hospital is a 179,888-square-foot laboratory building at 4901 BARNES HOSPITAL PLAZA in St. Louis, Missouri. In its 2021 St. Louis benchmarking disclosure it reported a site energy-use intensity of 300.6 kBtu/ft².
Building Energy Awareness Ordinance 70474 / BEPS 71132 · reporting year 2021
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 300.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Gross floor area | 179,888 sq ft |
| Source record | st_louis:P-000545:2021 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2021latest | — | 300.6 kBtu/ft² | — | |
| 2020 | — | 365.5 kBtu/ft² | — | |
| 2019 | — | 366.0 kBtu/ft² | — | |
| 2018 | — | 389.1 kBtu/ft² | — | |
| 2017 | — | 393.2 kBtu/ft² | — |
Compliance context
Building Energy Awareness Ordinance 70474 / BEPS 71132
St. Louis's Building Energy Performance Standard (Ordinance 71132) requires buildings of 50,000 sq ft or more to meet energy-use targets, with standards set on four-year cycles.
Ownership
WASHINGTON UNIVERSITY MCMILLIAN HOSPITAL
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Location
- Address
- 4901 BARNES HOSPITAL PLAZA
- City
- St. Louis
- State
- Missouri
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in St. Louis · biggest emitters
How does 6.McMillan Hospital compare with other laboratory buildings in St. Louis?
The latest disclosures cover 23 laboratory buildings in St. Louis, out of 639 buildings citywide. Its site EUI of 300.6 kBtu/ft² is about 18% above the average of 255.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 179,888 sq ft, it is about 14% above the average floor area of 157,787 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 795 laboratory buildings average an ENERGY STAR score of 29 and a site EUI of 231.7 kBtu/ft².
How has 6.McMillan Hospital's energy performance changed over time?
BuildingCensus holds 5 St. Louis disclosures for 6.McMillan Hospital, covering report years 2017–2021. Site EUI moved from 393.2 kBtu/ft² (2017) to 300.6 kBtu/ft² (2021), a 24% decrease.
What does a site EUI of 300.6 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. 6.McMillan Hospital's 300.6 kBtu/ft² across 179,888 sq ft works out to about 54.1 billion Btu (15,848 MWh-equivalent) in 2021.
Which law requires 6.McMillan Hospital to report its energy use?
6.McMillan Hospital reports under the Building Energy Awareness Ordinance 70474 / BEPS 71132, the legal basis of St. Louis's Building Energy Awareness Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2021 disclosure (source record st_louis:P-000545:2021). St. Louis's Building Energy Performance Standard (Ordinance 71132) requires buildings of 50,000 sq ft or more to meet energy-use targets, with standards set on four-year cycles.
More laboratory buildings in St. Louis
- BRAUER HALL· 134,878 sq ft · EUI 180.7 kBtu/ft²
- 70.East Building· 125,837 sq ft · EUI 130.7 kBtu/ft²
- WHITAKER HALL· 117,556 sq ft · EUI 223.7 kBtu/ft²
- 14.West Building· 103,262 sq ft · EUI 241.2 kBtu/ft²
- American Red Cross· 101,974 sq ft · EUI 538.0 kBtu/ft²
- 181.Biotechnology Center· 94,077 sq ft · EUI 402.4 kBtu/ft²
- All St. Louis benchmarked buildings· Building Energy Awareness Ordinance 70474 / BEPS 71132
- Most efficient large buildings in St. Louis
- Least efficient large buildings in St. Louis
- Biggest emitters in St. Louis
Frequently asked questions
What is 6.McMillan Hospital's energy grade?
6.McMillan Hospital did not report an ENERGY STAR score in its 2021 disclosure, but its site energy-use intensity was 300.6 kBtu/ft².
How much energy does 6.McMillan Hospital use?
Its 2021 site energy-use intensity was 300.6 kBtu/ft² across 179,888 sq ft.
What are 6.McMillan Hospital's carbon emissions?
No greenhouse-gas emissions figure was reported for 2021.
Where is 6.McMillan Hospital?
6.McMillan Hospital is at 4901 BARNES HOSPITAL PLAZA, in St. Louis, Missouri.
How big is 6.McMillan Hospital and when was it built?
6.McMillan Hospital has 179,888 sq ft of gross floor area, as reported in its 2021 disclosure. It is classed as laboratory.
Is 6.McMillan Hospital covered by the Building Energy Awareness Ordinance 70474 / BEPS 71132?
Yes — it appears in the 2021 Building Energy Awareness Benchmarking disclosure, which lists the buildings reporting under the Building Energy Awareness Ordinance 70474 / BEPS 71132.
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About this data
Source: Building Energy Awareness Benchmarking (Building Energy Awareness Ordinance 70474 / BEPS 71132), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “6.McMillan Hospital, St. Louis, Missouri — 2021 benchmarking disclosure”, https://buildingcensus.com/buildings/st-louis/6-mcmillan-hospital-2d0938f5 (data as of July 9, 2026).