Park Clayton
Multifamily Housing in St. Louis, MO · 6605 CLAYTON AVE
At a glance
Park Clayton is a 121,110-square-foot multifamily housing building at 6605 CLAYTON AVE in St. Louis, Missouri. In its 2021 St. Louis benchmarking disclosure it reported a site energy-use intensity of 23.7 kBtu/ft².
Building Energy Awareness Ordinance 70474 / BEPS 71132 · reporting year 2021
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 23.7 kBtu/ft² |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Gross floor area | 121,110 sq ft |
| Source record | st_louis:P-000816:2021 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2021latest | — | 23.7 kBtu/ft² | — | |
| 2020 | — | 33.7 kBtu/ft² | — | |
| 2019 | — | 21.7 kBtu/ft² | — | |
| 2018 | — | 22.5 kBtu/ft² | — | |
| 2017 | — | 21.4 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
PARK CLAYTON APTS PARTNERS . MILLS PROPERTIES INC
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Location
- Address
- 6605 CLAYTON AVE
- 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 Park Clayton compare with other multifamily housing buildings in St. Louis?
The latest disclosures cover 181 multifamily housing buildings in St. Louis, out of 639 buildings citywide. Its site EUI of 23.7 kBtu/ft² is about 57% below the average of 54.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 121,110 sq ft, it is roughly in line with the average floor area of 131,363 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Park Clayton's energy performance changed over time?
BuildingCensus holds 5 St. Louis disclosures for Park Clayton, covering report years 2017–2021. Site EUI moved from 21.4 kBtu/ft² (2017) to 23.7 kBtu/ft² (2021), an 11% increase.
What does a site EUI of 23.7 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. Park Clayton's 23.7 kBtu/ft² across 121,110 sq ft works out to about 2.9 billion Btu (841 MWh-equivalent) in 2021.
Which law requires Park Clayton to report its energy use?
Park Clayton 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-000816:2021). 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 multifamily housing buildings in St. Louis
- Park Place Apartments· 120,274 sq ft · EUI 22.5 kBtu/ft²
- Temtor Lofts· 119,868 sq ft · EUI 47.7 kBtu/ft²
- Plaza Square 50, LP· 119,340 sq ft · EUI 632.3 kBtu/ft²
- Soulard Market Lofts· 119,250 sq ft · EUI 72.4 kBtu/ft²
- Cupples Station Lofts· 117,877 sq ft · EUI 68.8 kBtu/ft²
- Grand Flats - gr223· 116,626 sq ft · EUI 22.8 kBtu/ft²
- Multifamily Housing buildings in St. Louis· 181 benchmarked
- 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 Park Clayton's energy grade?
Park Clayton did not report an ENERGY STAR score in its 2021 disclosure, but its site energy-use intensity was 23.7 kBtu/ft².
How much energy does Park Clayton use?
Its 2021 site energy-use intensity was 23.7 kBtu/ft² across 121,110 sq ft.
What are Park Clayton's carbon emissions?
No greenhouse-gas emissions figure was reported for 2021.
Where is Park Clayton?
Park Clayton is at 6605 CLAYTON AVE, in St. Louis, Missouri.
How big is Park Clayton and when was it built?
Park Clayton has 121,110 sq ft of gross floor area, as reported in its 2021 disclosure. It is classed as multifamily housing.
Is Park Clayton 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, “Park Clayton, St. Louis, Missouri — 2021 benchmarking disclosure”, https://buildingcensus.com/buildings/st-louis/park-clayton-2a70d293 (data as of July 9, 2026).