At a glance
One North Dearborn is a 1,088,373-square-foot office building at 1-17 N. Dearborn Street in Chicago, Illinois, built in 1904. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 86 out of 100 (grade A), a site energy-use intensity of 41.9 kBtu/ft² and 5,293 tCO₂e of greenhouse-gas emissions. That score is higher than 81% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 86 (band A) |
| Site EUI | 41.9 kBtu/ft² |
| Source EUI | 95.7 kBtu/ft² |
| GHG emissions | 5,293 tCO₂e |
| GHG intensity | 4.9 kgCO₂e/ft² |
| Electricity | 9,708,936 kWh |
| Natural gas | 51 therms |
| Water use | 2,576 kgal |
| Gross floor area | 1,088,373 sq ft |
| Source record | chicago:101812:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 86 | +2 | 41.9 kBtu/ft² | 5,293 tCO₂e |
| 2022 | 84 | +1 | 43.9 kBtu/ft² | 5,380 tCO₂e |
| 2021 | 83 | -3 | 45.1 kBtu/ft² | 5,751 tCO₂e |
| 2020 | 86 | +6 | 41.4 kBtu/ft² | 5,886 tCO₂e |
| 2019 | 80 | +6 | 56.6 kBtu/ft² | — |
| 2018 | 74 | -13 | 56.4 kBtu/ft² | 8,558 tCO₂e |
| 2017 | 87 | +4 | 60.2 kBtu/ft² | 8,455 tCO₂e |
| 2016 | 83 | +4 | 65.6 kBtu/ft² | 9,998 tCO₂e |
| 2015 | 79 | 73.4 kBtu/ft² | 11,989 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
- 1-17 N. Dearborn Street
- City
- Chicago
- State
- Illinois
- ZIP
- 60602
- Coordinates
- 41.79306, -87.60149
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does One North Dearborn compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. One North Dearborn's ENERGY STAR score of 86 compares with an average of 69 across the 320 that report a score; it scores higher than 81% of them and lower than 18%. Its site EUI of 41.9 kBtu/ft² is about 40% 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 4.9 kgCO₂e/ft² is about 35% below the group average of 7.5 kgCO₂e/ft².
At 1,088,373 sq ft, it is about 123% above the average floor area of 488,124 sq ft for those buildings. It was built in 1904, 52 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 One North Dearborn's energy performance changed over time?
BuildingCensus holds 9 Chicago disclosures for One North Dearborn, covering report years 2015–2023. Its ENERGY STAR score went from 79 in 2015 to 86 in 2023 (+7 points); its best year on file was 2017, at 87. Site EUI moved from 73.4 kBtu/ft² (2015) to 41.9 kBtu/ft² (2023), a 43% decrease. Reported emissions went from 11,989 tCO₂e to 5,293 tCO₂e over the same span (down 56%).
What does an ENERGY STAR score of 86 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 86 means the building performs better than about 86% of its national peers. BuildingCensus bands the score into report-card grades; 86 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. One North Dearborn's 41.9 kBtu/ft² across 1,088,373 sq ft works out to about 45.6 billion Btu (13,365 MWh-equivalent) in 2023. Its source EUI of 95.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 9,708,936 kWh of electricity, 51 therms of natural gas and 2,576 thousand gallons of water for the year.
Which law requires One North Dearborn to report its energy use?
One North Dearborn 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:101812:2023). 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
- 33 West Monroe· 1,085,869 sq ft · score 61 (C)
- 181 West Madison· 1,082,248 sq ft · score 76 (B)
- 161 North Clark· 1,080,995 sq ft · score 76 (B)
- 233 North Michigan Avenue· 1,051,591 sq ft · EUI 71.1 kBtu/ft²
- 401 N Michigan Avenue· 1,040,767 sq ft · score 78 (B)
- 525 West Monroe· 1,028,492 sq ft · score 78 (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 One North Dearborn's energy grade?
One North Dearborn scores 86 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 One North Dearborn use?
Its 2023 site energy-use intensity was 41.9 kBtu/ft² (95.7 kBtu/ft² source) across 1,088,373 sq ft, including 9,708,936 kWh of electricity and 51 therms of natural gas.
What are One North Dearborn's carbon emissions?
One North Dearborn reported 5,293 tCO₂e of greenhouse-gas emissions (4.9 kgCO₂e/ft²) for 2023.
Where is One North Dearborn?
One North Dearborn is at 1-17 N. Dearborn Street, in Chicago, Illinois 60602. Its coordinates are 41.79306, -87.60149 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is One North Dearborn and when was it built?
One North Dearborn has 1,088,373 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1904 as its year built. It is classed as office.
Is One North Dearborn 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, “One North Dearborn, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/one-north-dearborn-278f7c29 (data as of October 2, 2026).