West Side Realty Corporation
Medical Office in Chicago, IL · 1645 W. Jackson Blvd. · 60612
At a glance
West Side Realty Corporation is a 127,100-square-foot medical office at 1645 W. Jackson Blvd. in Chicago, Illinois, built in 1991. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 42 out of 100 (grade D), a site energy-use intensity of 82.5 kBtu/ft² and 1,368 tCO₂e of greenhouse-gas emissions. That score is higher than 50% of the 14 scored medical office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 42 (band D) |
| Site EUI | 82.5 kBtu/ft² |
| Source EUI | 215.3 kBtu/ft² |
| GHG emissions | 1,368 tCO₂e |
| GHG intensity | 10.8 kgCO₂e/ft² |
| Electricity | 2,738,160 kWh |
| Natural gas | 11,479 therms |
| Gross floor area | 127,100 sq ft |
| Source record | chicago:156693:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 42 | +2 | 82.5 kBtu/ft² | 1,368 tCO₂e |
| 2022 | 40 | -15 | 86.9 kBtu/ft² | 1,368 tCO₂e |
| 2021 | 55 | +3 | 76.4 kBtu/ft² | 1,274 tCO₂e |
| 2020 | 52 | +21 | 82.2 kBtu/ft² | 1,519 tCO₂e |
| 2019 | 31 | -7 | 106.7 kBtu/ft² | 2,046 tCO₂e |
| 2018 | 38 | -2 | 103.0 kBtu/ft² | 1,955 tCO₂e |
| 2017 | 40 | ±0 | 98.2 kBtu/ft² | 2,041 tCO₂e |
| 2016 | 40 | -2 | 101.5 kBtu/ft² | 2,134 tCO₂e |
| 2015 | 42 | 96.5 kBtu/ft² | 2,179 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
- 1645 W. Jackson Blvd.
- City
- Chicago
- State
- Illinois
- ZIP
- 60612
- Coordinates
- 41.81030, -87.66881
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does West Side Realty Corporation compare with other medical office buildings in Chicago?
The latest disclosures cover 18 medical office buildings in Chicago, out of 3,852 buildings citywide. West Side Realty Corporation's ENERGY STAR score of 42 compares with an average of 49 across the 14 that report a score; it scores higher than 50% of them and lower than 43%. Its site EUI of 82.5 kBtu/ft² is about 21% below the average of 104.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 10.8 kgCO₂e/ft² is roughly in line with the group average of 11.4 kgCO₂e/ft².
At 127,100 sq ft, it is about 42% below the average floor area of 219,884 sq ft for those buildings. It was built in 1991, 9 years earlier than the group's average year built (2000). Across all 24 jurisdictions BuildingCensus covers, the 1,266 medical office buildings average an ENERGY STAR score of 64 and a site EUI of 92.2 kBtu/ft².
How has West Side Realty Corporation's energy performance changed over time?
BuildingCensus holds 9 Chicago disclosures for West Side Realty Corporation, covering report years 2015–2023. Its ENERGY STAR score was 42 in both 2015 and 2023. Site EUI moved from 96.5 kBtu/ft² (2015) to 82.5 kBtu/ft² (2023), a 15% decrease. Reported emissions went from 2,179 tCO₂e to 1,368 tCO₂e over the same span (down 37%).
What does an ENERGY STAR score of 42 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 42 means the building performs better than about 42% of its national peers. BuildingCensus bands the score into report-card grades; 42 falls in band D — lowest band (1–54). It sits 33 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. West Side Realty Corporation's 82.5 kBtu/ft² across 127,100 sq ft works out to about 10.5 billion Btu (3,073 MWh-equivalent) in 2023. Its source EUI of 215.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,738,160 kWh of electricity and 11,479 therms of natural gas for the year.
Which law requires West Side Realty Corporation to report its energy use?
West Side Realty Corporation 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:156693:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
More medical office buildings in Chicago
- (IL0214) - 800 E 55th Building (800 E 55th St )· 73,327 sq ft · score 24 (D)
- 1333 West Belmont Avenue· 72,945 sq ft · score 51 (D)
- St. Bernard Ambulatory Care Center· 66,634 sq ft · score 73 (B)
- Advocate Beverly Center - 7767· 59,345 sq ft · score 15 (D)
- MLK Medical Properties, LLC· 55,184 sq ft · score 40 (D)
- Professional Office Building· 51,825 sq ft · score 21 (D)
- 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 West Side Realty Corporation's energy grade?
West Side Realty Corporation scores 42 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 West Side Realty Corporation use?
Its 2023 site energy-use intensity was 82.5 kBtu/ft² (215.3 kBtu/ft² source) across 127,100 sq ft, including 2,738,160 kWh of electricity and 11,479 therms of natural gas.
What are West Side Realty Corporation's carbon emissions?
West Side Realty Corporation reported 1,368 tCO₂e of greenhouse-gas emissions (10.8 kgCO₂e/ft²) for 2023.
Where is West Side Realty Corporation?
West Side Realty Corporation is at 1645 W. Jackson Blvd., in Chicago, Illinois 60612. Its coordinates are 41.81030, -87.66881 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is West Side Realty Corporation and when was it built?
West Side Realty Corporation has 127,100 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1991 as its year built. It is classed as medical office.
Is West Side Realty Corporation 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, “West Side Realty Corporation, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/west-side-realty-corporation-5dae8f1c (data as of October 2, 2026).