At a glance
1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC is a 383,168-square-foot hotel at 171 W Randolph St in Chicago, Illinois, built in 1926. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 40 out of 100 (grade D), a site energy-use intensity of 170.7 kBtu/ft² and 4,300 tCO₂e of greenhouse-gas emissions. That score is higher than 31% of the 77 scored hotel buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 40 (band D) |
| Site EUI | 170.7 kBtu/ft² |
| Source EUI | 216.0 kBtu/ft² |
| GHG emissions | 4,300 tCO₂e |
| GHG intensity | 11.2 kgCO₂e/ft² |
| Electricity | 2,813,174 kWh |
| Natural gas | 362,669 therms |
| Water use | 18,353 kgal |
| Gross floor area | 383,168 sq ft |
| Source record | chicago:101901:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 40 | +1 | 170.7 kBtu/ft² | 4,300 tCO₂e |
| 2022 | 39 | +9 | 170.8 kBtu/ft² | 4,218 tCO₂e |
| 2021 | 30 | -41 | 214.8 kBtu/ft² | 5,149 tCO₂e |
| 2020 | 71 | +27 | 142.7 kBtu/ft² | 3,739 tCO₂e |
| 2019 | 44 | +10 | 178.4 kBtu/ft² | 4,900 tCO₂e |
| 2018 | 34 | +23 | 195.7 kBtu/ft² | 5,343 tCO₂e |
| 2017 | 11 | -36 | 230.7 kBtu/ft² | — |
| 2016 | 47 | 181.5 kBtu/ft² | 5,160 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
- 171 W Randolph St
- City
- Chicago
- State
- Illinois
- ZIP
- 60601
- Coordinates
- 41.99444, -87.66105
Within ~1 km
Nearby benchmarked buildings
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Hotel · 550,000 sq ft
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- AMLI 900score 49
Multifamily Housing · 460,702 sq ft
See also: most efficient in Chicago · biggest emitters
How does 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC compare with other hotel buildings in Chicago?
The latest disclosures cover 88 hotel buildings in Chicago, out of 3,852 buildings citywide. 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC's ENERGY STAR score of 40 compares with an average of 51 across the 77 that report a score; it scores higher than 31% of them and lower than 65%. Its site EUI of 170.7 kBtu/ft² is about 55% above the average of 110.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 11.2 kgCO₂e/ft² is about 11% above the group average of 10.1 kgCO₂e/ft².
At 383,168 sq ft, it is about 11% above the average floor area of 343,808 sq ft for those buildings. It was built in 1926, 53 years earlier than the group's average year built (1979). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC's energy performance changed over time?
BuildingCensus holds 8 Chicago disclosures for 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC, covering report years 2016–2023. Its ENERGY STAR score went from 47 in 2016 to 40 in 2023 (-7 points); its best year on file was 2020, at 71. Site EUI moved from 181.5 kBtu/ft² (2016) to 170.7 kBtu/ft² (2023), a 6% decrease. Reported emissions went from 5,160 tCO₂e to 4,300 tCO₂e over the same span (down 17%).
What does an ENERGY STAR score of 40 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 40 means the building performs better than about 40% of its national peers. BuildingCensus bands the score into report-card grades; 40 falls in band D — lowest band (1–54). It sits 35 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. 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC's 170.7 kBtu/ft² across 383,168 sq ft works out to about 65.4 billion Btu (19,169 MWh-equivalent) in 2023. Its source EUI of 216.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,813,174 kWh of electricity, 362,669 therms of natural gas and 18,353 thousand gallons of water for the year.
Which law requires 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC to report its energy use?
1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC 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:101901:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
More hotel buildings in Chicago
- 1063 - Royal Sonesta Chicago Riverfront 71 E Wacker Drive - SVC· 381,540 sq ft · score 81 (B)
- W Chicago Lakeshore· 381,382 sq ft · score 54 (D)
- Sofitel Chicago Water Tower· 377,000 sq ft · score 12 (D)
- Hiltons at McCormick Place· 362,462 sq ft · EUI 86.7 kBtu/ft²
- The Gwen Hotel· 360,000 sq ft · score 92 (A)
- SpringHill Suites - Residence Inn· 353,000 sq ft · score 49 (D)
- Hotel buildings in Chicago· 88 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 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC's energy grade?
1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC scores 40 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 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC use?
Its 2023 site energy-use intensity was 170.7 kBtu/ft² (216.0 kBtu/ft² source) across 383,168 sq ft, including 2,813,174 kWh of electricity and 362,669 therms of natural gas.
What are 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC's carbon emissions?
1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC reported 4,300 tCO₂e of greenhouse-gas emissions (11.2 kgCO₂e/ft²) for 2023.
Where is 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC?
1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC is at 171 W Randolph St, in Chicago, Illinois 60601. Its coordinates are 41.99444, -87.66105 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC and when was it built?
1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC has 383,168 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1926 as its year built. It is classed as hotel.
Is 1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC 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, “1123 - The Allegro Royal Sonesta - 171 W Randolph - SVC, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/1123-the-allegro-royal-sonesta-171-w-randolph-svc-4032a0da (data as of October 2, 2026).