21 East Chestnut Condominium Association
Multifamily Housing in Chicago, IL · 21 East Chestnut Street · 60611
At a glance
21 East Chestnut Condominium Association is a 122,400-square-foot multifamily housing building at 21 East Chestnut Street in Chicago, Illinois, built in 1962. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 26 out of 100 (grade D), a site energy-use intensity of 105.1 kBtu/ft² and 947 tCO₂e of greenhouse-gas emissions. That score is higher than 12% 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 | 26 (band D) |
| Site EUI | 105.1 kBtu/ft² |
| Source EUI | 153.8 kBtu/ft² |
| GHG emissions | 947 tCO₂e |
| GHG intensity | 7.7 kgCO₂e/ft² |
| Electricity | 892,075 kWh |
| Natural gas | 98,148 therms |
| Gross floor area | 122,400 sq ft |
| Source record | chicago:172103:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 26 | +12 | 105.1 kBtu/ft² | 947 tCO₂e |
| 2022 | 14 | -2 | 126.0 kBtu/ft² | 1,118 tCO₂e |
| 2021 | 16 | -12 | 115.6 kBtu/ft² | 1,094 tCO₂e |
| 2020 | 28 | -1 | 109.3 kBtu/ft² | 1,028 tCO₂e |
| 2019 | 29 | -15 | 110.3 kBtu/ft² | 1,142 tCO₂e |
| 2018 | 44 | +12 | 97.7 kBtu/ft² | 1,062 tCO₂e |
| 2017 | 32 | +21 | 100.2 kBtu/ft² | 1,130 tCO₂e |
| 2016 | 11 | 115.9 kBtu/ft² | 1,345 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
- 21 East Chestnut Street
- City
- Chicago
- State
- Illinois
- ZIP
- 60611
- Coordinates
- 41.80800, -87.61641
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does 21 East Chestnut Condominium Association 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. 21 East Chestnut Condominium Association's ENERGY STAR score of 26 compares with an average of 62 across the 1,472 that report a score; it scores higher than 12% of them and lower than 87%. Its site EUI of 105.1 kBtu/ft² is about 46% above the average of 72.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 7.7 kgCO₂e/ft² is about 33% above the group average of 5.8 kgCO₂e/ft².
At 122,400 sq ft, it is about 41% below the average floor area of 206,097 sq ft for those buildings. It was built in 1962, 9 years earlier 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 21 East Chestnut Condominium Association's energy performance changed over time?
BuildingCensus holds 8 Chicago disclosures for 21 East Chestnut Condominium Association, covering report years 2016–2023. Its ENERGY STAR score went from 11 in 2016 to 26 in 2023 (+15 points); its best year on file was 2018, at 44. Site EUI moved from 115.9 kBtu/ft² (2016) to 105.1 kBtu/ft² (2023), a 9% decrease. Reported emissions went from 1,345 tCO₂e to 947 tCO₂e over the same span (down 30%).
What does an ENERGY STAR score of 26 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 26 means the building performs better than about 26% of its national peers. BuildingCensus bands the score into report-card grades; 26 falls in band D — lowest band (1–54). It sits 49 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. 21 East Chestnut Condominium Association's 105.1 kBtu/ft² across 122,400 sq ft works out to about 12.9 billion Btu (3,770 MWh-equivalent) in 2023. Its source EUI of 153.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 892,075 kWh of electricity and 98,148 therms of natural gas for the year.
Which law requires 21 East Chestnut Condominium Association to report its energy use?
21 East Chestnut Condominium Association 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:172103:2023). 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
- Hampden Tower Condominium Association· 122,200 sq ft · score 37 (D)
- Renaissance Place at Hyde Park Condominium Association North· 121,725 sq ft · score 79 (B)
- Las Americas Apartments· 121,530 sq ft · score 75 (B)
- Lakeview 3200 Apartments· 121,076 sq ft · score 72 (B)
- 711 W Gordon Terrace· 121,026 sq ft · score 63 (C)
- Manhattan Building Condominium· 121,000 sq ft · score 9 (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 21 East Chestnut Condominium Association's energy grade?
21 East Chestnut Condominium Association scores 26 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 21 East Chestnut Condominium Association use?
Its 2023 site energy-use intensity was 105.1 kBtu/ft² (153.8 kBtu/ft² source) across 122,400 sq ft, including 892,075 kWh of electricity and 98,148 therms of natural gas.
What are 21 East Chestnut Condominium Association's carbon emissions?
21 East Chestnut Condominium Association reported 947 tCO₂e of greenhouse-gas emissions (7.7 kgCO₂e/ft²) for 2023.
Where is 21 East Chestnut Condominium Association?
21 East Chestnut Condominium Association is at 21 East Chestnut Street, in Chicago, Illinois 60611. Its coordinates are 41.80800, -87.61641 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is 21 East Chestnut Condominium Association and when was it built?
21 East Chestnut Condominium Association has 122,400 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1962 as its year built. It is classed as multifamily housing.
Is 21 East Chestnut Condominium Association 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, “21 East Chestnut Condominium Association, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/21-east-chestnut-condominium-association-0df44c26 (data as of October 2, 2026).