At a glance
120 South LaSalle Street Building is a 760,892-square-foot office building at 120 South Lasalle Street in Chicago, Illinois, built in 1929. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 88 out of 100 (grade A), a site energy-use intensity of 51.6 kBtu/ft² and 3,276 tCO₂e of greenhouse-gas emissions. That score is higher than 86% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 88 (band A) |
| Site EUI | 51.6 kBtu/ft² |
| Source EUI | 84.4 kBtu/ft² |
| GHG emissions | 3,276 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 4,035,466 kWh |
| Natural gas | 179,123 therms |
| Water use | 2,562 kgal |
| Gross floor area | 760,892 sq ft |
| Source record | chicago:103601:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 88 | +6 | 51.6 kBtu/ft² | 3,276 tCO₂e |
| 2022 | 82 | 61.9 kBtu/ft² | 3,656 tCO₂e | |
| 2021 | — | — | — | |
| 2020 | 82 | -18 | 52.9 kBtu/ft² | 3,773 tCO₂e |
| 2019 | 100 | 39.1 kBtu/ft² | 1,578 tCO₂e | |
| 2018 | — | — | — | |
| 2017 | 93 | +2 | 62.0 kBtu/ft² | 5,070 tCO₂e |
| 2016 | 91 | ±0 | 69.8 kBtu/ft² | 5,522 tCO₂e |
| 2015 | 91 | ±0 | 65.7 kBtu/ft² | 5,764 tCO₂e |
| 2014 | 91 | 72.0 kBtu/ft² | 6,031 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 120 South Lasalle Street
- City
- Chicago
- State
- Illinois
- ZIP
- 60602
- Coordinates
- 41.88945, -87.71507
Within ~1 km
Nearby benchmarked buildings
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- 555 Cornelia (251219)score 95
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- Crerar Libraryscore —
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- Eberhartscore 58
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- CHICAGO BRICKYARD (1924)score 78
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See also: most efficient in Chicago · biggest emitters
How does 120 South LaSalle Street Building compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. 120 South LaSalle Street Building's ENERGY STAR score of 88 compares with an average of 69 across the 320 that report a score; it scores higher than 86% of them and lower than 12%. Its site EUI of 51.6 kBtu/ft² is about 27% 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 4.3 kgCO₂e/ft² is about 43% below the group average of 7.5 kgCO₂e/ft².
At 760,892 sq ft, it is about 56% above the average floor area of 488,124 sq ft for those buildings. It was built in 1929, 27 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 120 South LaSalle Street Building's energy performance changed over time?
BuildingCensus holds 10 Chicago disclosures for 120 South LaSalle Street Building, covering report years 2014–2023. Its ENERGY STAR score went from 91 in 2014 to 88 in 2023 (-3 points); its best year on file was 2019, at 100. Site EUI moved from 72.0 kBtu/ft² (2014) to 51.6 kBtu/ft² (2023), a 28% decrease. Reported emissions went from 6,031 tCO₂e to 3,276 tCO₂e over the same span (down 46%).
What does an ENERGY STAR score of 88 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 88 means the building performs better than about 88% of its national peers. BuildingCensus bands the score into report-card grades; 88 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. 120 South LaSalle Street Building's 51.6 kBtu/ft² across 760,892 sq ft works out to about 39.3 billion Btu (11,507 MWh-equivalent) in 2023. Its source EUI of 84.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,035,466 kWh of electricity, 179,123 therms of natural gas and 2,562 thousand gallons of water for the year.
Which law requires 120 South LaSalle Street Building to report its energy use?
120 South LaSalle Street Building 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:103601:2023). 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
- 515 North State· 757,990 sq ft · score 83 (B)
- Two North Riverside Plaza· 741,315 sq ft · score 64 (C)
- One North Franklin (PNC Center)· 716,245 sq ft · score 70 (B)
- 541 N Fairbanks· 712,914 sq ft · score 81 (B)
- 150 North Michigan· 708,981 sq ft · score 75 (B)
- 24 East Washington Street· 707,816 sq ft · score 94 (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 120 South LaSalle Street Building's energy grade?
120 South LaSalle Street Building scores 88 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 120 South LaSalle Street Building use?
Its 2023 site energy-use intensity was 51.6 kBtu/ft² (84.4 kBtu/ft² source) across 760,892 sq ft, including 4,035,466 kWh of electricity and 179,123 therms of natural gas.
What are 120 South LaSalle Street Building's carbon emissions?
120 South LaSalle Street Building reported 3,276 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2023.
Where is 120 South LaSalle Street Building?
120 South LaSalle Street Building is at 120 South Lasalle Street, in Chicago, Illinois 60602. Its coordinates are 41.88945, -87.71507 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is 120 South LaSalle Street Building and when was it built?
120 South LaSalle Street Building has 760,892 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1929 as its year built. It is classed as office.
Is 120 South LaSalle Street Building 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, “120 South LaSalle Street Building, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/120-south-lasalle-street-building-e091bc2e (data as of October 2, 2026).