At a glance
Stewart Business Center is a 114,880-square-foot office building at 400 W. 76th Street in Chicago, Illinois, built in 1965. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 29.8 kBtu/ft² and 332 tCO₂e of greenhouse-gas emissions. That score is higher than 96% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 29.8 kBtu/ft² |
| Source EUI | 57.6 kBtu/ft² |
| GHG emissions | 332 tCO₂e |
| GHG intensity | 2.9 kgCO₂e/ft² |
| Electricity | 505,046 kWh |
| Natural gas | 17,049 therms |
| Gross floor area | 114,880 sq ft |
| Source record | chicago:174123:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 95 | +1 | 29.8 kBtu/ft² | 332 tCO₂e |
| 2022 | 94 | +1 | 32.1 kBtu/ft² | 338 tCO₂e |
| 2021 | 93 | 32.2 kBtu/ft² | 378 tCO₂e | |
| 2020 | — | — | — | |
| 2019 | — | — | — | |
| 2018 | — | — | — | |
| 2016 | — | — | — | |
| 2015 | 100 | 19.7 kBtu/ft² | 409 tCO₂e |
Compliance context
Building Energy Use Benchmarking Ordinance
Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 400 W. 76th Street
- City
- Chicago
- State
- Illinois
- ZIP
- 60620
- Coordinates
- 41.86335, -87.71929
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does Stewart Business Center compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. Stewart Business Center's ENERGY STAR score of 95 compares with an average of 69 across the 320 that report a score; it scores higher than 96% of them and lower than 3%. Its site EUI of 29.8 kBtu/ft² is about 58% below the average of 70.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.9 kgCO₂e/ft² is about 61% below the group average of 7.5 kgCO₂e/ft².
At 114,880 sq ft, it is about 76% below the average floor area of 488,124 sq ft for those buildings. It was built in 1965, 9 years later than the group's average year built (1957). 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 Stewart Business Center's energy performance changed over time?
BuildingCensus holds 8 Chicago disclosures for Stewart Business Center, covering report years 2015, 2016, 2018, 2019, 2020, 2021, 2022, 2023. Its ENERGY STAR score went from 100 in 2015 to 95 in 2023 (-5 points); its best year on file was 2015, at 100. Site EUI moved from 19.7 kBtu/ft² (2015) to 29.8 kBtu/ft² (2023), an 51% increase. Reported emissions went from 409 tCO₂e to 332 tCO₂e over the same span (down 19%).
What does an ENERGY STAR score of 95 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In Chicago, 35% of scored buildings are at 75 or above.
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. Stewart Business Center's 29.8 kBtu/ft² across 114,880 sq ft works out to about 3.4 billion Btu (1,003 MWh-equivalent) in 2023. Its source EUI of 57.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 505,046 kWh of electricity and 17,049 therms of natural gas for the year.
Which law requires Stewart Business Center to report its energy use?
Stewart Business Center reports under the Building Energy Use Benchmarking Ordinance, the legal basis of the Chicago Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record chicago:174123:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
More office buildings in Chicago
- Academy of General Dentistry· 113,151 sq ft · score 75 (B)
- F.H. Paschen, S.N. Nielsen & Associates, LLC· 112,700 sq ft · score 58 (C)
- 440 North Wells Street· 112,671 sq ft · score 70 (B)
- Sunshine Enterprise, LLC - Series II (218 S Wabash)· 111,550 sq ft · score 69 (C)
- The Thompson Building· 111,033 sq ft · score 51 (D)
- Chicago Teachers Union Foundation· 110,192 sq ft · score 92 (A)
- Office buildings in Chicago· 387 benchmarked
- All Chicago benchmarked buildings· Building Energy Use Benchmarking Ordinance
- Most efficient large buildings in Chicago
- Least efficient large buildings in Chicago
- Biggest emitters in Chicago
Frequently asked questions
What is Stewart Business Center's energy grade?
Stewart Business Center scores 95 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 Chicago disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Stewart Business Center use?
Its 2023 site energy-use intensity was 29.8 kBtu/ft² (57.6 kBtu/ft² source) across 114,880 sq ft, including 505,046 kWh of electricity and 17,049 therms of natural gas.
What are Stewart Business Center's carbon emissions?
Stewart Business Center reported 332 tCO₂e of greenhouse-gas emissions (2.9 kgCO₂e/ft²) for 2023.
Where is Stewart Business Center?
Stewart Business Center is at 400 W. 76th Street, in Chicago, Illinois 60620. Its coordinates are 41.86335, -87.71929 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is Stewart Business Center and when was it built?
Stewart Business Center has 114,880 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1965 as its year built. It is classed as office.
Is Stewart Business Center covered by the Building Energy Use Benchmarking Ordinance?
Yes — it appears in the 2023 Chicago Energy Benchmarking disclosure, which lists the buildings reporting under the Building Energy Use Benchmarking Ordinance.
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About this data
Source: Chicago Energy Benchmarking (Building Energy Use Benchmarking Ordinance), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Stewart Business Center, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/stewart-business-center-78ef3fad (data as of October 2, 2026).