At a glance
Parish_OuigleyCenter is a 84,100-square-foot office building at 835 N Rush Street in Chicago, Illinois, built in 1917. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 46 out of 100 (grade D), a site energy-use intensity of 93.4 kBtu/ft² and 720 tCO₂e of greenhouse-gas emissions. That score is higher than 12% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 46 (band D) |
| Site EUI | 93.4 kBtu/ft² |
| Source EUI | 170.6 kBtu/ft² |
| GHG emissions | 720 tCO₂e |
| GHG intensity | 8.6 kgCO₂e/ft² |
| Electricity | 1,022,120 kWh |
| Natural gas | 43,667 therms |
| Gross floor area | 84,100 sq ft |
| Source record | chicago:251784:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 46 | 93.4 kBtu/ft² | 720 tCO₂e | |
| 2022 | — | — | — | |
| 2021 | 50 | +1 | 88.6 kBtu/ft² | 705 tCO₂e |
| 2020 | 49 | +12 | 93.7 kBtu/ft² | 764 tCO₂e |
| 2019 | 37 | +12 | 104.3 kBtu/ft² | 941 tCO₂e |
| 2018 | 25 | -24 | 108.4 kBtu/ft² | 979 tCO₂e |
| 2017 | 49 | -3 | 111.9 kBtu/ft² | 1,127 tCO₂e |
| 2016 | 52 | +16 | 105.3 kBtu/ft² | 1,106 tCO₂e |
| 2015 | 36 | 135.8 kBtu/ft² | 1,369 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
- 835 N Rush Street
- City
- Chicago
- State
- Illinois
- ZIP
- 60611
- Coordinates
- 41.99482, -87.71434
Within ~1 km
Nearby benchmarked buildings
- 55 West Monroescore 77
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- Echelon Chicagoscore 37
Multifamily Housing · 333,262 sq ft
- Peterson Corporatescore —
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- Linea Apartmentsscore —
Residential · —
See also: most efficient in Chicago · biggest emitters
How does Parish_OuigleyCenter compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. Parish_OuigleyCenter's ENERGY STAR score of 46 compares with an average of 69 across the 320 that report a score; it scores higher than 12% of them and lower than 88%. Its site EUI of 93.4 kBtu/ft² is about 33% above the average of 70.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.6 kgCO₂e/ft² is about 15% above the group average of 7.5 kgCO₂e/ft².
At 84,100 sq ft, it is about 83% below the average floor area of 488,124 sq ft for those buildings. It was built in 1917, 39 years earlier 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 Parish_OuigleyCenter's energy performance changed over time?
BuildingCensus holds 9 Chicago disclosures for Parish_OuigleyCenter, covering report years 2015–2023. Its ENERGY STAR score went from 36 in 2015 to 46 in 2023 (+10 points); its best year on file was 2016, at 52. Site EUI moved from 135.8 kBtu/ft² (2015) to 93.4 kBtu/ft² (2023), a 31% decrease. Reported emissions went from 1,369 tCO₂e to 720 tCO₂e over the same span (down 47%).
What does an ENERGY STAR score of 46 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 46 means the building performs better than about 46% of its national peers. BuildingCensus bands the score into report-card grades; 46 falls in band D — lowest band (1–54). It sits 29 points below 75, the threshold for ENERGY STAR certification. 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. Parish_OuigleyCenter's 93.4 kBtu/ft² across 84,100 sq ft works out to about 7.9 billion Btu (2,302 MWh-equivalent) in 2023. Its source EUI of 170.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,022,120 kWh of electricity and 43,667 therms of natural gas for the year.
Which law requires Parish_OuigleyCenter to report its energy use?
Parish_OuigleyCenter 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:251784:2023). 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
- 133 N Jefferson· 83,000 sq ft · score 73 (B)
- Lurie Children's Faculty Office Building· 82,717 sq ft · score 53 (D)
- Adlake Limited Partnership· 81,000 sq ft · score 72 (B)
- Rice Building· 80,610 sq ft · score 58 (C)
- Lightner Building· 80,000 sq ft · score 92 (A)
- 601 South LaSalle· 80,000 sq ft · EUI 41.9 kBtu/ft²
- 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 Parish_OuigleyCenter's energy grade?
Parish_OuigleyCenter scores 46 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 Chicago disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Parish_OuigleyCenter use?
Its 2023 site energy-use intensity was 93.4 kBtu/ft² (170.6 kBtu/ft² source) across 84,100 sq ft, including 1,022,120 kWh of electricity and 43,667 therms of natural gas.
What are Parish_OuigleyCenter's carbon emissions?
Parish_OuigleyCenter reported 720 tCO₂e of greenhouse-gas emissions (8.6 kgCO₂e/ft²) for 2023.
Where is Parish_OuigleyCenter?
Parish_OuigleyCenter is at 835 N Rush Street, in Chicago, Illinois 60611. Its coordinates are 41.99482, -87.71434 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is Parish_OuigleyCenter and when was it built?
Parish_OuigleyCenter has 84,100 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1917 as its year built. It is classed as office.
Is Parish_OuigleyCenter 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, “Parish_OuigleyCenter, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/parish-ouigleycenter-8433da23 (data as of October 2, 2026).