At a glance
640 N LaSalle is a 282,343-square-foot office building at 640 N Lasalle Dr in Chicago, Illinois, built in 1969. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 71 out of 100 (grade B), a site energy-use intensity of 59.3 kBtu/ft² and 2,158 tCO₂e of greenhouse-gas emissions. That score is higher than 40% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 71 (band B) |
| Site EUI | 59.3 kBtu/ft² |
| Source EUI | 152.9 kBtu/ft² |
| GHG emissions | 2,158 tCO₂e |
| GHG intensity | 7.6 kgCO₂e/ft² |
| Electricity | 4,284,134 kWh |
| Natural gas | 21,279 therms |
| Gross floor area | 282,343 sq ft |
| Source record | chicago:103766:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 71 | +1 | 59.3 kBtu/ft² | 2,158 tCO₂e |
| 2022 | 70 | -13 | 62.1 kBtu/ft² | 2,111 tCO₂e |
| 2021 | 83 | +15 | 49.1 kBtu/ft² | 1,791 tCO₂e |
| 2020 | 68 | -1 | 65.3 kBtu/ft² | 2,648 tCO₂e |
| 2019 | 69 | +13 | 83.7 kBtu/ft² | — |
| 2018 | 56 | -19 | 91.9 kBtu/ft² | 3,879 tCO₂e |
| 2017 | 75 | ±0 | 84.8 kBtu/ft² | 3,901 tCO₂e |
| 2016 | 75 | +7 | 85.6 kBtu/ft² | 3,895 tCO₂e |
| 2015 | 68 | +8 | 87.0 kBtu/ft² | 4,446 tCO₂e |
| 2014 | 60 | 114.0 kBtu/ft² | 4,913 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
- 640 N Lasalle Dr
- City
- Chicago
- State
- Illinois
- ZIP
- 60654
- Coordinates
- 41.87132, -87.65789
Within ~1 km
Nearby benchmarked buildings
- Hyatt Regency Chicagoscore 80
Hotel · 2,022,785 sq ft
- 120 South Riverside Plazascore 95
Office · 787,045 sq ft
- Misericordia Homescore —
Mixed Use Property · 717,710 sq ft
- Whitney Young -CPSscore 3
K-12 School · 430,443 sq ft
- 211 E. Chicago Ave.score 77
Office · 394,230 sq ft
Multifamily Housing · 382,715 sq ft
See also: most efficient in Chicago · biggest emitters
How does 640 N LaSalle compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. 640 N LaSalle's ENERGY STAR score of 71 compares with an average of 69 across the 320 that report a score; it scores higher than 40% of them and lower than 57%. Its site EUI of 59.3 kBtu/ft² is about 16% 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 7.6 kgCO₂e/ft² is roughly in line with the group average of 7.5 kgCO₂e/ft².
At 282,343 sq ft, it is about 42% below the average floor area of 488,124 sq ft for those buildings. It was built in 1969, 13 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 640 N LaSalle's energy performance changed over time?
BuildingCensus holds 10 Chicago disclosures for 640 N LaSalle, covering report years 2014–2023. Its ENERGY STAR score went from 60 in 2014 to 71 in 2023 (+11 points); its best year on file was 2021, at 83. Site EUI moved from 114.0 kBtu/ft² (2014) to 59.3 kBtu/ft² (2023), a 48% decrease. Reported emissions went from 4,913 tCO₂e to 2,158 tCO₂e over the same span (down 56%).
What does an ENERGY STAR score of 71 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 71 means the building performs better than about 71% of its national peers. BuildingCensus bands the score into report-card grades; 71 falls in band B — above median (70–84). It sits 4 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. 640 N LaSalle's 59.3 kBtu/ft² across 282,343 sq ft works out to about 16.7 billion Btu (4,907 MWh-equivalent) in 2023. Its source EUI of 152.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,284,134 kWh of electricity and 21,279 therms of natural gas for the year.
Which law requires 640 N LaSalle to report its energy use?
640 N LaSalle 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:103766:2023). 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
- The Professional Building (Central Campus Health Center)· 282,000 sq ft · EUI 113.1 kBtu/ft²
- 328 S Jefferson· 279,257 sq ft · score 75 (B)
- 55 West Wacker Drive· 278,671 sq ft · score 68 (C)
- 400 South Jefferson - OPI· 275,487 sq ft · score 97 (A)
- The Garland Building Office Condominium· 259,000 sq ft · score 31 (D)
- Evangelical Lutheran Church in America· 252,250 sq ft · score 91 (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 640 N LaSalle's energy grade?
640 N LaSalle scores 71 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2023 Chicago disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 640 N LaSalle use?
Its 2023 site energy-use intensity was 59.3 kBtu/ft² (152.9 kBtu/ft² source) across 282,343 sq ft, including 4,284,134 kWh of electricity and 21,279 therms of natural gas.
What are 640 N LaSalle's carbon emissions?
640 N LaSalle reported 2,158 tCO₂e of greenhouse-gas emissions (7.6 kgCO₂e/ft²) for 2023.
Where is 640 N LaSalle?
640 N LaSalle is at 640 N Lasalle Dr, in Chicago, Illinois 60654. Its coordinates are 41.87132, -87.65789 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is 640 N LaSalle and when was it built?
640 N LaSalle has 282,343 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1969 as its year built. It is classed as office.
Is 640 N LaSalle 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, “640 N LaSalle, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/640-n-lasalle-801e8375 (data as of October 2, 2026).