City Plaza
Strip Mall in St. Louis, MO · 3431 UNION BLVD
At a glance
City Plaza is a 80,150-square-foot strip mall building at 3431 UNION BLVD in St. Louis, Missouri. In its 2021 St. Louis benchmarking disclosure it reported a site energy-use intensity of 189.4 kBtu/ft².
Building Energy Awareness Ordinance 70474 / BEPS 71132 · reporting year 2021
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 189.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Gross floor area | 80,150 sq ft |
| Source record | st_louis:P-001124:2021 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2021latest | — | 189.4 kBtu/ft² | — | |
| 2020 | — | 198.0 kBtu/ft² | — | |
| 2018 | — | 192.2 kBtu/ft² | — | |
| 2017 | — | 216.8 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
USR-Desco City Plaza
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Location
- Address
- 3431 UNION BLVD
- 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 City Plaza compare with other strip mall buildings in St. Louis?
The latest disclosures cover 7 strip mall buildings in St. Louis, out of 639 buildings citywide. Its site EUI of 189.4 kBtu/ft² is about 55% above the average of 122.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 80,150 sq ft, it is about half of the average floor area of 148,118 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 1,607 strip mall buildings average an ENERGY STAR score of 68 and a site EUI of 83.1 kBtu/ft².
How has City Plaza's energy performance changed over time?
BuildingCensus holds 4 St. Louis disclosures for City Plaza, covering report years 2017, 2018, 2020, 2021. Site EUI moved from 216.8 kBtu/ft² (2017) to 189.4 kBtu/ft² (2021), a 13% decrease.
What does a site EUI of 189.4 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. City Plaza's 189.4 kBtu/ft² across 80,150 sq ft works out to about 15.2 billion Btu (4,449 MWh-equivalent) in 2021.
Which law requires City Plaza to report its energy use?
City Plaza 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-001124:2021). 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 strip mall buildings in St. Louis
Frequently asked questions
What is City Plaza's energy grade?
City Plaza did not report an ENERGY STAR score in its 2021 disclosure, but its site energy-use intensity was 189.4 kBtu/ft².
How much energy does City Plaza use?
Its 2021 site energy-use intensity was 189.4 kBtu/ft² across 80,150 sq ft.
What are City Plaza's carbon emissions?
No greenhouse-gas emissions figure was reported for 2021.
Where is City Plaza?
City Plaza is at 3431 UNION BLVD, in St. Louis, Missouri.
How big is City Plaza and when was it built?
City Plaza has 80,150 sq ft of gross floor area, as reported in its 2021 disclosure. It is classed as strip mall.
Is City Plaza 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, “City Plaza, St. Louis, Missouri — 2021 benchmarking disclosure”, https://buildingcensus.com/buildings/st-louis/city-plaza-fd3413cf (data as of July 9, 2026).