CA Washington
Multifamily Housing in Chicago, IL · 27 N. Aberdeen Street · 60607
At a glance
CA Washington is a 178,875-square-foot multifamily housing building at 27 N. Aberdeen Street in Chicago, Illinois, built in 2018. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 68 out of 100 (grade C), a site energy-use intensity of 43.0 kBtu/ft² and 671 tCO₂e of greenhouse-gas emissions. That score is higher than 52% of the 1,472 scored multifamily housing buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 68 (band C) |
| Site EUI | 43.0 kBtu/ft² |
| Source EUI | 74.7 kBtu/ft² |
| GHG emissions | 671 tCO₂e |
| GHG intensity | 3.7 kgCO₂e/ft² |
| Electricity | 883,341 kWh |
| Natural gas | 46,842 therms |
| Gross floor area | 178,875 sq ft |
| Source record | chicago:255947:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 68 | -17 | 43.0 kBtu/ft² | 671 tCO₂e |
| 2022 | 85 | +12 | 43.6 kBtu/ft² | 639 tCO₂e |
| 2021 | 73 | -1 | 44.7 kBtu/ft² | 707 tCO₂e |
| 2020 | 74 | -4 | 44.3 kBtu/ft² | 741 tCO₂e |
| 2019 | 78 | 45.6 kBtu/ft² | 774 tCO₂e | |
| 2018 | — | — | — |
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
- 27 N. Aberdeen Street
- City
- Chicago
- State
- Illinois
- ZIP
- 60607
- Coordinates
- 41.87459, -87.71814
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does CA Washington compare with other multifamily housing buildings in Chicago?
The latest disclosures cover 1,515 multifamily housing buildings in Chicago, out of 3,852 buildings citywide. CA Washington's ENERGY STAR score of 68 compares with an average of 62 across the 1,472 that report a score; it scores higher than 52% of them and lower than 47%. Its site EUI of 43.0 kBtu/ft² is about 40% below the average of 72.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.7 kgCO₂e/ft² is about 36% below the group average of 5.8 kgCO₂e/ft².
At 178,875 sq ft, it is about 13% below the average floor area of 206,097 sq ft for those buildings. It was built in 2018, 47 years later than the group's average year built (1971). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has CA Washington's energy performance changed over time?
BuildingCensus holds 6 Chicago disclosures for CA Washington, covering report years 2018–2023. Its ENERGY STAR score went from 78 in 2019 to 68 in 2023 (-10 points); its best year on file was 2022, at 85. Site EUI moved from 45.6 kBtu/ft² (2019) to 43.0 kBtu/ft² (2023), a 6% decrease. Reported emissions went from 774 tCO₂e to 671 tCO₂e over the same span (down 13%).
What does an ENERGY STAR score of 68 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 68 means the building performs better than about 68% of its national peers. BuildingCensus bands the score into report-card grades; 68 falls in band C — below median (55–69). It sits 7 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. CA Washington's 43.0 kBtu/ft² across 178,875 sq ft works out to about 7.7 billion Btu (2,254 MWh-equivalent) in 2023. Its source EUI of 74.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 883,341 kWh of electricity and 46,842 therms of natural gas for the year.
Which law requires CA Washington to report its energy use?
CA Washington 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:255947:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.
More multifamily housing buildings in Chicago
- Sangamon Lofts Condominium Association· 178,600 sq ft · score 97 (A)
- (IL219) - 333 S Des Plaines (333 S. Des Plaines)· 178,336 sq ft · score 40 (D)
- 30 E. Adams· 177,697 sq ft · EUI 22.4 kBtu/ft²
- River West Lofts· 177,000 sq ft · score 68 (C)
- 10 W ELM· 176,500 sq ft · EUI 44.2 kBtu/ft²
- Hampton House Condominiums· 176,450 sq ft · score 49 (D)
- Multifamily Housing buildings in Chicago· 1,515 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 CA Washington's energy grade?
CA Washington scores 68 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2023 Chicago disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does CA Washington use?
Its 2023 site energy-use intensity was 43.0 kBtu/ft² (74.7 kBtu/ft² source) across 178,875 sq ft, including 883,341 kWh of electricity and 46,842 therms of natural gas.
What are CA Washington's carbon emissions?
CA Washington reported 671 tCO₂e of greenhouse-gas emissions (3.7 kgCO₂e/ft²) for 2023.
Where is CA Washington?
CA Washington is at 27 N. Aberdeen Street, in Chicago, Illinois 60607. Its coordinates are 41.87459, -87.71814 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is CA Washington and when was it built?
CA Washington has 178,875 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2018 as its year built. It is classed as multifamily housing.
Is CA Washington 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, “CA Washington, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/ca-washington-0b4f7ad1 (data as of October 2, 2026).