At a glance
IL2125ZZ-OUINCY COURT BLDG is a 120,592-square-foot office building at 11 W Ouincy Court in Chicago, Illinois, built in 1985. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 89 out of 100 (grade A), a site energy-use intensity of 35.6 kBtu/ft² and 426 tCO₂e of greenhouse-gas emissions. That score is higher than 88% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 89 (band A) |
| Site EUI | 35.6 kBtu/ft² |
| Source EUI | 70.4 kBtu/ft² |
| GHG emissions | 426 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 667,749 kWh |
| Natural gas | 20,102 therms |
| Water use | 256 kgal |
| Gross floor area | 120,592 sq ft |
| Source record | chicago:175995:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 89 | 35.6 kBtu/ft² | 426 tCO₂e | |
| 2022 | — | — | — | |
| 2021 | 89 | ±0 | 37.1 kBtu/ft² | 451 tCO₂e |
| 2020 | 89 | +1 | 35.8 kBtu/ft² | 458 tCO₂e |
| 2019 | 88 | -2 | 35.7 kBtu/ft² | — |
| 2018 | 90 | -6 | 24.6 kBtu/ft² | 413 tCO₂e |
| 2017 | 96 | +1 | 33.9 kBtu/ft² | 508 tCO₂e |
| 2016 | 95 | -2 | 36.4 kBtu/ft² | 541 tCO₂e |
| 2015 | 97 | 37.9 kBtu/ft² | 586 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
- 11 W Ouincy Court
- City
- Chicago
- State
- Illinois
- ZIP
- 60604
- Coordinates
- 41.87072, -87.71834
Within ~1 km
Nearby benchmarked buildings
- OneTwoPruscore 80
Office · 2,751,035 sq ft
Multifamily Housing · 841,880 sq ft
- 2150 S Canalport Avenuescore —
Office · 221,330 sq ft
- CA Washingtonscore 68
Multifamily Housing · 178,875 sq ft
- Tower Lofts Condoscore 68
Multifamily Housing · 176,062 sq ft
- Stewart Business Centerscore 95
Office · 114,880 sq ft
See also: most efficient in Chicago · biggest emitters
How does IL2125ZZ-OUINCY COURT BLDG compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. IL2125ZZ-OUINCY COURT BLDG's ENERGY STAR score of 89 compares with an average of 69 across the 320 that report a score; it scores higher than 88% of them and lower than 11%. Its site EUI of 35.6 kBtu/ft² is about half of 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 3.5 kgCO₂e/ft² is about half of the group average of 7.5 kgCO₂e/ft².
At 120,592 sq ft, it is about 75% below the average floor area of 488,124 sq ft for those buildings. It was built in 1985, 29 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 IL2125ZZ-OUINCY COURT BLDG's energy performance changed over time?
BuildingCensus holds 9 Chicago disclosures for IL2125ZZ-OUINCY COURT BLDG, covering report years 2015–2023. Its ENERGY STAR score went from 97 in 2015 to 89 in 2023 (-8 points); its best year on file was 2015, at 97. Site EUI moved from 37.9 kBtu/ft² (2015) to 35.6 kBtu/ft² (2023), a 6% decrease. Reported emissions went from 586 tCO₂e to 426 tCO₂e over the same span (down 27%).
What does an ENERGY STAR score of 89 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 89 means the building performs better than about 89% of its national peers. BuildingCensus bands the score into report-card grades; 89 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. IL2125ZZ-OUINCY COURT BLDG's 35.6 kBtu/ft² across 120,592 sq ft works out to about 4.3 billion Btu (1,258 MWh-equivalent) in 2023. Its source EUI of 70.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 667,749 kWh of electricity, 20,102 therms of natural gas and 256 thousand gallons of water for the year.
Which law requires IL2125ZZ-OUINCY COURT BLDG to report its energy use?
IL2125ZZ-OUINCY COURT BLDG 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:175995:2023). 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
- 626 West Jackson· 120,441 sq ft · score 71 (B)
- 363 Erie IL Partners LLC· 119,405 sq ft · score 90 (A)
- 820 N Orleans Street· 118,000 sq ft · score 10 (D)
- 600 West Jackson Boulevard· 116,879 sq ft · score 79 (B)
- Peerless Building· 115,232 sq ft · score 43 (D)
- Stewart Business Center· 114,880 sq ft · score 95 (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 IL2125ZZ-OUINCY COURT BLDG's energy grade?
IL2125ZZ-OUINCY COURT BLDG scores 89 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 IL2125ZZ-OUINCY COURT BLDG use?
Its 2023 site energy-use intensity was 35.6 kBtu/ft² (70.4 kBtu/ft² source) across 120,592 sq ft, including 667,749 kWh of electricity and 20,102 therms of natural gas.
What are IL2125ZZ-OUINCY COURT BLDG's carbon emissions?
IL2125ZZ-OUINCY COURT BLDG reported 426 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2023.
Where is IL2125ZZ-OUINCY COURT BLDG?
IL2125ZZ-OUINCY COURT BLDG is at 11 W Ouincy Court, in Chicago, Illinois 60604. Its coordinates are 41.87072, -87.71834 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is IL2125ZZ-OUINCY COURT BLDG and when was it built?
IL2125ZZ-OUINCY COURT BLDG has 120,592 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1985 as its year built. It is classed as office.
Is IL2125ZZ-OUINCY COURT BLDG 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, “IL2125ZZ-OUINCY COURT BLDG, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/il2125zz-ouincy-court-bldg-82668ec8 (data as of October 2, 2026).