At a glance
320 N Sangamon is a 309,985-square-foot office building at 320 North Sangamon in Chicago, Illinois, built in 2021. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 42.6 kBtu/ft² and 1,270 tCO₂e of greenhouse-gas emissions. That score is higher than 91% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 91 (band A) |
| Site EUI | 42.6 kBtu/ft² |
| Source EUI | 81.7 kBtu/ft² |
| GHG emissions | 1,270 tCO₂e |
| GHG intensity | 4.1 kgCO₂e/ft² |
| Electricity | 1,919,671 kWh |
| Natural gas | 66,639 therms |
| Water use | 3,440 kgal |
| Gross floor area | 309,985 sq ft |
| Source record | chicago:256900:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 91 | 42.6 kBtu/ft² | 1,270 tCO₂e | |
| 2022 | — | 37.1 kBtu/ft² | 1,080 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
- 320 North Sangamon
- City
- Chicago
- State
- Illinois
- ZIP
- 60607
- Coordinates
- 41.88133, -87.66805
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does 320 N Sangamon compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. 320 N Sangamon's ENERGY STAR score of 91 compares with an average of 69 across the 320 that report a score; it scores higher than 91% of them and lower than 7%. Its site EUI of 42.6 kBtu/ft² is about 39% 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 4.1 kgCO₂e/ft² is about half of the group average of 7.5 kgCO₂e/ft².
At 309,985 sq ft, it is about 36% below the average floor area of 488,124 sq ft for those buildings. It was built in 2021, 65 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 320 N Sangamon's energy performance changed over time?
BuildingCensus holds 2 Chicago disclosures for 320 N Sangamon, covering report years 2022–2023. Site EUI moved from 37.1 kBtu/ft² (2022) to 42.6 kBtu/ft² (2023), an 15% increase. Reported emissions went from 1,080 tCO₂e to 1,270 tCO₂e over the same span (up 18%).
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 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. 320 N Sangamon's 42.6 kBtu/ft² across 309,985 sq ft works out to about 13.2 billion Btu (3,870 MWh-equivalent) in 2023. Its source EUI of 81.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,919,671 kWh of electricity, 66,639 therms of natural gas and 3,440 thousand gallons of water for the year.
Which law requires 320 N Sangamon to report its energy use?
320 N Sangamon 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:256900:2023). 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
- Fulton West· 307,948 sq ft · score 71 (B)
- Inland Steel Building· 300,971 sq ft · score 64 (C)
- 150 North Wacker Drive· 295,894 sq ft · score 50 (D)
- 640 N LaSalle· 282,343 sq ft · score 71 (B)
- 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)
- 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 320 N Sangamon's energy grade?
320 N Sangamon scores 91 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 320 N Sangamon use?
Its 2023 site energy-use intensity was 42.6 kBtu/ft² (81.7 kBtu/ft² source) across 309,985 sq ft, including 1,919,671 kWh of electricity and 66,639 therms of natural gas.
What are 320 N Sangamon's carbon emissions?
320 N Sangamon reported 1,270 tCO₂e of greenhouse-gas emissions (4.1 kgCO₂e/ft²) for 2023.
Where is 320 N Sangamon?
320 N Sangamon is at 320 North Sangamon, in Chicago, Illinois 60607. Its coordinates are 41.88133, -87.66805 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is 320 N Sangamon and when was it built?
320 N Sangamon has 309,985 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2021 as its year built. It is classed as office.
Is 320 N Sangamon 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, “320 N Sangamon, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/320-n-sangamon-bc4b6636 (data as of October 2, 2026).