43.Northwest Tower
Medical Office in St. Louis, MO · 4990 CHILDRENS PL
At a glance
43.Northwest Tower is a 216,585-square-foot medical office at 4990 CHILDRENS PL in St. Louis, Missouri. In its 2021 St. Louis benchmarking disclosure it reported a site energy-use intensity of 63.2 kBtu/ft².
Building Energy Awareness Ordinance 70474 / BEPS 71132 · reporting year 2021
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 63.2 kBtu/ft² |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Gross floor area | 216,585 sq ft |
| Source record | st_louis:P-001076:2021 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2021latest | — | 63.2 kBtu/ft² | — | |
| 2020 | — | 61.3 kBtu/ft² | — | |
| 2019 | — | 66.4 kBtu/ft² | — | |
| 2018 | — | 69.7 kBtu/ft² | — | |
| 2017 | — | 73.7 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
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Location
- Address
- 4990 CHILDRENS PL
- 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 43.Northwest Tower compare with other medical office buildings in St. Louis?
The latest disclosures cover 11 medical office buildings in St. Louis, out of 639 buildings citywide. Its site EUI of 63.2 kBtu/ft² is about half of the average of 122.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 216,585 sq ft, it is about 71% above the average floor area of 126,939 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has 43.Northwest Tower's energy performance changed over time?
BuildingCensus holds 5 St. Louis disclosures for 43.Northwest Tower, covering report years 2017–2021. Site EUI moved from 73.7 kBtu/ft² (2017) to 63.2 kBtu/ft² (2021), a 14% decrease.
What does a site EUI of 63.2 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. 43.Northwest Tower's 63.2 kBtu/ft² across 216,585 sq ft works out to about 13.7 billion Btu (4,012 MWh-equivalent) in 2021.
Which law requires 43.Northwest Tower to report its energy use?
43.Northwest Tower 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-001076:2021). 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 medical office buildings in St. Louis
- SLUH WP (Child Property)· 205,311 sq ft · EUI 121.1 kBtu/ft²
- 21.Wohl Clinic· 148,884 sq ft · EUI 114.4 kBtu/ft²
- 22.Wohl Hospital· 91,776 sq ft · EUI 198.8 kBtu/ft²
- Highlands Plaza Three· 86,230 sq ft · EUI 110.9 kBtu/ft²
- 87.1234 S. Kingshighway· 61,340 sq ft · EUI 54.5 kBtu/ft²
- 50.Barnard Hospital· 55,243 sq ft · EUI 206.1 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 43.Northwest Tower's energy grade?
43.Northwest Tower did not report an ENERGY STAR score in its 2021 disclosure, but its site energy-use intensity was 63.2 kBtu/ft².
How much energy does 43.Northwest Tower use?
Its 2021 site energy-use intensity was 63.2 kBtu/ft² across 216,585 sq ft.
What are 43.Northwest Tower's carbon emissions?
No greenhouse-gas emissions figure was reported for 2021.
Where is 43.Northwest Tower?
43.Northwest Tower is at 4990 CHILDRENS PL, in St. Louis, Missouri.
How big is 43.Northwest Tower and when was it built?
43.Northwest Tower has 216,585 sq ft of gross floor area, as reported in its 2021 disclosure. It is classed as medical office.
Is 43.Northwest Tower 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, “43.Northwest Tower, St. Louis, Missouri — 2021 benchmarking disclosure”, https://buildingcensus.com/buildings/st-louis/43-northwest-tower-fd21c1a6 (data as of July 9, 2026).