CA 23
Multifamily Housing in Chicago, IL · 15 23 N ABERDEEN ST · 60607
At a glance
CA 23 is a 120,905-square-foot multifamily housing building at 15 23 N ABERDEEN ST in Chicago, Illinois, built in 2012. In its 2022 Chicago benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 34.6 kBtu/ft² and 366 tCO₂e of greenhouse-gas emissions. That score is higher than 97% of the 1,472 scored multifamily housing buildings in Chicago.
Building Energy Use Benchmarking Ordinance · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 34.6 kBtu/ft² |
| Source EUI | 62.8 kBtu/ft² |
| GHG emissions | 366 tCO₂e |
| GHG intensity | 3.0 kgCO₂e/ft² |
| Electricity | 536,867 kWh |
| Natural gas | 23,469 therms |
| Gross floor area | 120,905 sq ft |
| Source record | chicago:101407:2022 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2022latest | 100 | ±0 | 34.6 kBtu/ft² | 366 tCO₂e |
| 2021 | 100 | 33.5 kBtu/ft² | 237 tCO₂e | |
| 2020 | — | — | — | |
| 2019 | 100 | ±0 | 46.7 kBtu/ft² | 460 tCO₂e |
| 2018 | 100 | +1 | 44.9 kBtu/ft² | 455 tCO₂e |
| 2017 | 99 | -1 | 52.4 kBtu/ft² | 478 tCO₂e |
| 2016 | 100 | 40.9 kBtu/ft² | 325 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
- 15 23 N ABERDEEN ST
- City
- Chicago
- State
- Illinois
- ZIP
- 60607
- Coordinates
- 41.88214, -87.65422
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does CA 23 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 23's ENERGY STAR score of 100 compares with an average of 62 across the 1,472 that report a score; it scores higher than 97% of them. Its site EUI of 34.6 kBtu/ft² is about half of 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 3.0 kgCO₂e/ft² is about half of the group average of 5.8 kgCO₂e/ft².
At 120,905 sq ft, it is about 41% below the average floor area of 206,097 sq ft for those buildings. It was built in 2012, 41 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 23's energy performance changed over time?
BuildingCensus holds 7 Chicago disclosures for CA 23, covering report years 2016–2022. Its ENERGY STAR score was 100 in both 2016 and 2022. Site EUI moved from 40.9 kBtu/ft² (2016) to 34.6 kBtu/ft² (2022), a 15% decrease. Reported emissions went from 325 tCO₂e to 366 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. CA 23's 34.6 kBtu/ft² across 120,905 sq ft works out to about 4.2 billion Btu (1,226 MWh-equivalent) in 2022. Its source EUI of 62.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 536,867 kWh of electricity and 23,469 therms of natural gas for the year.
Which law requires CA 23 to report its energy use?
CA 23 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 2022 disclosure (source record chicago:101407:2022). 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
- Wrigleyville Lofts· 120,843 sq ft · score 86 (A)
- Emmett Street· 120,771 sq ft · score 81 (B)
- 1000 N. LaSalle Apartments· 120,728 sq ft · score 28 (D)
- 1410 North State Parkway Condominium Association· 120,150 sq ft · score 63 (C)
- 2430 Lake View Avenue Building Corporation· 120,050 sq ft · EUI 77.9 kBtu/ft²
- 1169 S Plymouth Condominium Association· 120,000 sq ft · score 54 (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 23's energy grade?
CA 23 scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2022 Chicago disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does CA 23 use?
Its 2022 site energy-use intensity was 34.6 kBtu/ft² (62.8 kBtu/ft² source) across 120,905 sq ft, including 536,867 kWh of electricity and 23,469 therms of natural gas.
What are CA 23's carbon emissions?
CA 23 reported 366 tCO₂e of greenhouse-gas emissions (3.0 kgCO₂e/ft²) for 2022.
Where is CA 23?
CA 23 is at 15 23 N ABERDEEN ST, in Chicago, Illinois 60607. Its coordinates are 41.88214, -87.65422 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is CA 23 and when was it built?
CA 23 has 120,905 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 2012 as its year built. It is classed as multifamily housing.
Is CA 23 covered by the Building Energy Use Benchmarking Ordinance?
Yes — it appears in the 2022 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 23, Chicago, Illinois — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/ca-23-41b2a7b2 (data as of October 2, 2026).