At a glance
West Side Realty Corporation is a 65,885-square-foot office building at 300 S. Ashland Ave. in Chicago, Illinois, built in 1968. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 33 out of 100 (grade D), a site energy-use intensity of 74.9 kBtu/ft² and 691 tCO₂e of greenhouse-gas emissions. That score is higher than 6% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 33 (band D) |
| Site EUI | 74.9 kBtu/ft² |
| Source EUI | 209.7 kBtu/ft² |
| GHG emissions | 691 tCO₂e |
| GHG intensity | 10.5 kgCO₂e/ft² |
| Electricity | 1,446,331 kWh |
| Gross floor area | 65,885 sq ft |
| Source record | chicago:175474:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 33 | +9 | 74.9 kBtu/ft² | 691 tCO₂e |
| 2022 | 24 | +3 | 86.3 kBtu/ft² | 749 tCO₂e |
| 2021 | 21 | +10 | 89.7 kBtu/ft² | 844 tCO₂e |
| 2020 | 11 | -3 | 107.1 kBtu/ft² | 1,101 tCO₂e |
| 2019 | 14 | ±0 | 101.1 kBtu/ft² | 1,108 tCO₂e |
| 2018 | 14 | -14 | 91.2 kBtu/ft² | 1,000 tCO₂e |
| 2017 | 28 | +4 | 87.6 kBtu/ft² | 1,067 tCO₂e |
| 2016 | 24 | -1 | 93.7 kBtu/ft² | 1,138 tCO₂e |
| 2015 | 25 | 91.0 kBtu/ft² | 1,205 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
- 300 S. Ashland Ave.
- City
- Chicago
- State
- Illinois
- ZIP
- 60612
- Coordinates
- 41.99558, -87.67588
Within ~1 km
Nearby benchmarked buildings
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See also: most efficient in Chicago · biggest emitters
How does West Side Realty Corporation compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. West Side Realty Corporation's ENERGY STAR score of 33 compares with an average of 69 across the 320 that report a score; it scores higher than 6% of them and lower than 93%. Its site EUI of 74.9 kBtu/ft² is roughly in line with the average of 70.4 kBtu/ft². Its emissions intensity of 10.5 kgCO₂e/ft² is about 40% above the group average of 7.5 kgCO₂e/ft².
At 65,885 sq ft, it is about 87% below the average floor area of 488,124 sq ft for those buildings. It was built in 1968, 12 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 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 went from 25 in 2015 to 33 in 2023 (+8 points). Site EUI moved from 91.0 kBtu/ft² (2015) to 74.9 kBtu/ft² (2023), a 18% decrease. Reported emissions went from 1,205 tCO₂e to 691 tCO₂e over the same span (down 43%).
What does an ENERGY STAR score of 33 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 33 means the building performs better than about 33% of its national peers. BuildingCensus bands the score into report-card grades; 33 falls in band D — lowest band (1–54). It sits 42 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 74.9 kBtu/ft² across 65,885 sq ft works out to about 4.9 billion Btu (1,446 MWh-equivalent) in 2023. Its source EUI of 209.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,446,331 kWh of electricity 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:175474:2023). 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
- 1440 N Dayton Street· 65,614 sq ft · score 50 (D)
- 811 W Fulton· 64,877 sq ft · score 25 (D)
- Sunshine Enterprise, LLC Series V (228 S Wabash)· 64,630 sq ft · score 69 (C)
- Rosenwald Hall· 64,380 sq ft · score 77 (B)
- A&M 303 WEST ERIE, LLC· 62,849 sq ft · EUI 61.9 kBtu/ft²
- Garfield Center· 62,660 sq ft · score 41 (D)
- 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 West Side Realty Corporation's energy grade?
West Side Realty Corporation scores 33 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 74.9 kBtu/ft² (209.7 kBtu/ft² source) across 65,885 sq ft, including 1,446,331 kWh of electricity.
What are West Side Realty Corporation's carbon emissions?
West Side Realty Corporation reported 691 tCO₂e of greenhouse-gas emissions (10.5 kgCO₂e/ft²) for 2023.
Where is West Side Realty Corporation?
West Side Realty Corporation is at 300 S. Ashland Ave., in Chicago, Illinois 60612. Its coordinates are 41.99558, -87.67588 (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 65,885 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1968 as its year built. It is classed as 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-064054bf (data as of October 2, 2026).