At a glance
IL0054ZZ - CLARK FEDERAL BLDG is a 635,978-square-foot office building at 536 S Clark Street in Chicago, Illinois, built in 1912. 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 106.0 kBtu/ft² and 6,276 tCO₂e of greenhouse-gas emissions. That score is higher than 9% of the 320 scored office buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 40 (band D) |
| Site EUI | 106.0 kBtu/ft² |
| Source EUI | 196.7 kBtu/ft² |
| GHG emissions | 6,276 tCO₂e |
| GHG intensity | 9.9 kgCO₂e/ft² |
| Electricity | 9,095,842 kWh |
| Natural gas | 364,001 therms |
| Water use | 6,460 kgal |
| Gross floor area | 635,978 sq ft |
| Source record | chicago:101560:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 40 | +3 | 106.0 kBtu/ft² | 6,276 tCO₂e |
| 2022 | 37 | -3 | 114.0 kBtu/ft² | 6,368 tCO₂e |
| 2021 | 40 | -2 | 106.7 kBtu/ft² | 6,395 tCO₂e |
| 2020 | 42 | +5 | 105.4 kBtu/ft² | 6,624 tCO₂e |
| 2019 | 37 | +12 | 113.8 kBtu/ft² | — |
| 2018 | 25 | -30 | 120.2 kBtu/ft² | 7,850 tCO₂e |
| 2017 | 55 | -12 | 114.5 kBtu/ft² | 8,104 tCO₂e |
| 2016 | 67 | +5 | 95.4 kBtu/ft² | 7,452 tCO₂e |
| 2015 | 62 | -8 | 98.8 kBtu/ft² | 8,097 tCO₂e |
| 2014 | 70 | 100.0 kBtu/ft² | 8,280 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
- 536 S Clark Street
- City
- Chicago
- State
- Illinois
- ZIP
- 60605
- Coordinates
- 41.78167, -87.64473
Within ~1 km
Nearby benchmarked buildings
Multifamily Housing · 952,287 sq ft
- New Englewood Terrace Apartmentsscore 79
Multifamily Housing · 379,680 sq ft
- Piper's Alleyscore —
Mixed Use Property · 219,532 sq ft
- Central Statesscore 86
Office · 148,870 sq ft
- 3800 N California Avescore —
Commercial · —
- Thrive Englewoodscore —
Building · —
See also: most efficient in Chicago · biggest emitters
How does IL0054ZZ - CLARK FEDERAL BLDG compare with other office buildings in Chicago?
The latest disclosures cover 387 office buildings in Chicago, out of 3,852 buildings citywide. IL0054ZZ - CLARK FEDERAL BLDG's ENERGY STAR score of 40 compares with an average of 69 across the 320 that report a score; it scores higher than 9% of them and lower than 90%. Its site EUI of 106.0 kBtu/ft² is about 51% above the average of 70.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 9.9 kgCO₂e/ft² is about 32% above the group average of 7.5 kgCO₂e/ft².
At 635,978 sq ft, it is about 30% above the average floor area of 488,124 sq ft for those buildings. It was built in 1912, 44 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 IL0054ZZ - CLARK FEDERAL BLDG's energy performance changed over time?
BuildingCensus holds 10 Chicago disclosures for IL0054ZZ - CLARK FEDERAL BLDG, covering report years 2014–2023. Its ENERGY STAR score went from 70 in 2014 to 40 in 2023 (-30 points); its best year on file was 2014, at 70. Site EUI moved from 100.0 kBtu/ft² (2014) to 106.0 kBtu/ft² (2023), an 6% increase. Reported emissions went from 8,280 tCO₂e to 6,276 tCO₂e over the same span (down 24%).
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. IL0054ZZ - CLARK FEDERAL BLDG's 106.0 kBtu/ft² across 635,978 sq ft works out to about 67.4 billion Btu (19,757 MWh-equivalent) in 2023. Its source EUI of 196.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 9,095,842 kWh of electricity, 364,001 therms of natural gas and 6,460 thousand gallons of water for the year.
Which law requires IL0054ZZ - CLARK FEDERAL BLDG to report its energy use?
IL0054ZZ - CLARK FEDERAL BLDG 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:101560:2023). 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
- 633 N St. Clair· 632,163 sq ft · score 89 (A)
- 203 North LaSalle· 624,735 sq ft · score 76 (B)
- 333 N. Green· 622,736 sq ft · score 77 (B)
- The Jewelers Building· 621,390 sq ft · score 72 (B)
- AG 300 South Wacker Owner LLC· 598,410 sq ft · score 83 (B)
- Burnham Center· 597,773 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 IL0054ZZ - CLARK FEDERAL BLDG's energy grade?
IL0054ZZ - CLARK FEDERAL BLDG 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 IL0054ZZ - CLARK FEDERAL BLDG use?
Its 2023 site energy-use intensity was 106.0 kBtu/ft² (196.7 kBtu/ft² source) across 635,978 sq ft, including 9,095,842 kWh of electricity and 364,001 therms of natural gas.
What are IL0054ZZ - CLARK FEDERAL BLDG's carbon emissions?
IL0054ZZ - CLARK FEDERAL BLDG reported 6,276 tCO₂e of greenhouse-gas emissions (9.9 kgCO₂e/ft²) for 2023.
Where is IL0054ZZ - CLARK FEDERAL BLDG?
IL0054ZZ - CLARK FEDERAL BLDG is at 536 S Clark Street, in Chicago, Illinois 60605. Its coordinates are 41.78167, -87.64473 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is IL0054ZZ - CLARK FEDERAL BLDG and when was it built?
IL0054ZZ - CLARK FEDERAL BLDG has 635,978 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1912 as its year built. It is classed as office.
Is IL0054ZZ - CLARK FEDERAL BLDG 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.
Working with Chicago building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “IL0054ZZ - CLARK FEDERAL BLDG, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/il0054zz-clark-federal-bldg-6f5f8575 (data as of October 2, 2026).