One Main Plaza
Office in Kansas City, MO · 4435 Main Street · 64111
At a glance
One Main Plaza is a 185,125-square-foot office building at 4435 Main Street in Kansas City, Missouri. In its 2023 Kansas City benchmarking disclosure it reported a site energy-use intensity of 68.2 kBtu/ft² and 1,582 tCO₂e of greenhouse-gas emissions.
Energy Empowerment Ordinance (No. 150299) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 68.2 kBtu/ft² |
| Source EUI | 190.9 kBtu/ft² |
| GHG emissions | 1,582 tCO₂e |
| GHG intensity | — |
| Water use | 2,325 kgal |
| Gross floor area | 185,125 sq ft |
| Source record | kansas_city:11-CM-04480:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | — | 68.2 kBtu/ft² | 1,582 tCO₂e | |
| 2022 | — | 69.5 kBtu/ft² | 1,652 tCO₂e | |
| 2021 | — | 68.0 kBtu/ft² | 1,739 tCO₂e |
Compliance context
Energy Empowerment Ordinance (No. 150299)
Kansas City's Energy Empowerment Ordinance requires annual energy and water benchmarking for commercial and multifamily buildings over 50,000 sq ft (and for city-owned buildings), with public disclosure of results.
Ownership
The Curators Of The University Of MO
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Location
- Address
- 4435 Main Street
- City
- Kansas City
- State
- Missouri
- ZIP
- 64111
- Coordinates
- 39.08207, -94.57752
Within ~1 km
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- Tension Envelope Corpscore —
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- MCC - Penn Valleyscore —
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- Medical Plazascore 100
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See also: most efficient in Kansas City · biggest emitters
How does One Main Plaza compare with other office buildings in Kansas City?
The latest disclosures cover 133 office buildings in Kansas City, out of 1,628 buildings citywide. Its site EUI of 68.2 kBtu/ft² is roughly in line with the average of 73.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 185,125 sq ft, it is about 16% below the average floor area of 220,763 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has One Main Plaza's energy performance changed over time?
BuildingCensus holds 3 Kansas City disclosures for One Main Plaza, covering report years 2021–2023. Site EUI moved from 68.0 kBtu/ft² (2021) to 68.2 kBtu/ft² (2023), an 0% increase. Reported emissions went from 1,739 tCO₂e to 1,582 tCO₂e over the same span (down 9%).
What does a site EUI of 68.2 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. One Main Plaza's 68.2 kBtu/ft² across 185,125 sq ft works out to about 12.6 billion Btu (3,700 MWh-equivalent) in 2023. Its source EUI of 190.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,325 thousand gallons of water for the year.
Which law requires One Main Plaza to report its energy use?
One Main Plaza reports under the Energy Empowerment Ordinance (No. 150299), the legal basis of Kansas City's Energy and Water Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record kansas_city:11-CM-04480:2023). Kansas City's Energy Empowerment Ordinance requires annual energy and water benchmarking for commercial and multifamily buildings over 50,000 sq ft (and for city-owned buildings), with public disclosure of results.
More office buildings in Kansas City
- The Catholic Center· 184,724 sq ft · score 100 (A)
- 4900 Main· 182,153 sq ft · score 76 (B)
- Rice Building· 170,000 sq ft · score 39 (D)
- VFW National HQ· 165,829 sq ft · score 88 (A)
- 2301 McGee & Garage· 163,281 sq ft · score 77 (B)
- EO062Z/2121 E 63RD ST @ BLDG C/KANSAS CITY/MO· 159,652 sq ft
- Office buildings in Kansas City· 133 benchmarked
- All Kansas City benchmarked buildings· Energy Empowerment Ordinance (No. 150299)
- Most efficient large buildings in Kansas City
- Least efficient large buildings in Kansas City
- Biggest emitters in Kansas City
Frequently asked questions
What is One Main Plaza's energy grade?
One Main Plaza did not report an ENERGY STAR score in its 2023 disclosure, but its site energy-use intensity was 68.2 kBtu/ft².
How much energy does One Main Plaza use?
Its 2023 site energy-use intensity was 68.2 kBtu/ft² (190.9 kBtu/ft² source) across 185,125 sq ft.
What are One Main Plaza's carbon emissions?
One Main Plaza reported 1,582 tCO₂e of greenhouse-gas emissions for 2023.
Where is One Main Plaza?
One Main Plaza is at 4435 Main Street, in Kansas City, Missouri 64111. Its coordinates are 39.08207, -94.57752 (latitude, longitude), as published in the Energy and Water Benchmarking file.
How big is One Main Plaza and when was it built?
One Main Plaza has 185,125 sq ft of gross floor area, as reported in its 2023 disclosure. It is classed as office.
Is One Main Plaza covered by the Energy Empowerment Ordinance (No. 150299)?
Yes — it appears in the 2023 Energy and Water Benchmarking disclosure, which lists the buildings reporting under the Energy Empowerment Ordinance (No. 150299).
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About this data
Source: Energy and Water Benchmarking (Energy Empowerment Ordinance (No. 150299)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “One Main Plaza, Kansas City, Missouri — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/kansas-city/one-main-plaza-131ca0ce (data as of October 2, 2026).