420 432 W ONTARIO ST
Multifamily Housing in Chicago, IL · 60654
At a glance
420 432 W ONTARIO ST is a 82,716-square-foot multifamily housing building in Chicago, Illinois, built in 1999. 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 31.0 kBtu/ft² and 203 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 | 31.0 kBtu/ft² |
| Source EUI | 50.5 kBtu/ft² |
| GHG emissions | 203 tCO₂e |
| GHG intensity | 2.5 kgCO₂e/ft² |
| Electricity | 249,271 kWh |
| Natural gas | 17,110 therms |
| Gross floor area | 82,716 sq ft |
| Source record | chicago:102610:2022 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2022latest | 100 | ±0 | 31.0 kBtu/ft² | 203 tCO₂e |
| 2021 | 100 | ±0 | 25.0 kBtu/ft² | 199 tCO₂e |
| 2020 | 100 | +18 | 25.1 kBtu/ft² | 213 tCO₂e |
| 2019 | 82 | +2 | 37.2 kBtu/ft² | — |
| 2018 | 80 | +9 | 44.5 kBtu/ft² | 404 tCO₂e |
| 2017 | 71 | +18 | 40.3 kBtu/ft² | 445 tCO₂e |
| 2016 | 53 | 44.0 kBtu/ft² | 537 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
- 420 432 W ONTARIO ST
- City
- Chicago
- State
- Illinois
- ZIP
- 60654
- Coordinates
- 41.89323, -87.63944
Within ~1 km
Nearby benchmarked buildings
- Willis Tower (Rivion LLC)score 32
Office · 4,534,594 sq ft
- The John Hancock Centerscore 24
Mixed Use Property · 2,290,873 sq ft
- CH3 - Chicago 300 E Randolphscore 75
Office · 2,224,842 sq ft
- RICHARD J. DALEY CENTERscore 68
Courthouse · 1,541,766 sq ft
- 222 North LaSallescore 83
Office · 1,217,630 sq ft
- Harbor Pointscore 51
Multifamily Housing · 1,192,576 sq ft
See also: most efficient in Chicago · biggest emitters
How does 420 432 W ONTARIO ST 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. 420 432 W ONTARIO ST'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 31.0 kBtu/ft² is about 57% 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 2.5 kgCO₂e/ft² is about 57% below the group average of 5.8 kgCO₂e/ft².
At 82,716 sq ft, it is about 60% below the average floor area of 206,097 sq ft for those buildings. It was built in 1999, 28 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 420 432 W ONTARIO ST's energy performance changed over time?
BuildingCensus holds 7 Chicago disclosures for 420 432 W ONTARIO ST, covering report years 2016–2022. Its ENERGY STAR score went from 53 in 2016 to 100 in 2022 (+47 points); its best year on file was 2020, at 100. Site EUI moved from 44.0 kBtu/ft² (2016) to 31.0 kBtu/ft² (2022), a 30% decrease. Reported emissions went from 537 tCO₂e to 203 tCO₂e over the same span (down 62%).
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. 420 432 W ONTARIO ST's 31.0 kBtu/ft² across 82,716 sq ft works out to about 2.6 billion Btu (751 MWh-equivalent) in 2022. Its source EUI of 50.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 249,271 kWh of electricity and 17,110 therms of natural gas for the year.
Which law requires 420 432 W ONTARIO ST to report its energy use?
420 432 W ONTARIO ST 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:102610:2022). 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
- 740 N. Milwaukee, LLC· 82,600 sq ft · score 80 (B)
- Barry Building IV· 82,550 sq ft · score 96 (A)
- Peterson Lofts Condominium Association· 82,500 sq ft · score 94 (A)
- 5550 5556 S DORCHESTER AVE· 82,328 sq ft · score 35 (D)
- 6700 Crandon Condominium Association· 82,000 sq ft · score 11 (D)
- Washington SOuare Condominium Association· 81,924 sq ft · score 85 (A)
- 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 420 432 W ONTARIO ST's energy grade?
420 432 W ONTARIO ST 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 420 432 W ONTARIO ST use?
Its 2022 site energy-use intensity was 31.0 kBtu/ft² (50.5 kBtu/ft² source) across 82,716 sq ft, including 249,271 kWh of electricity and 17,110 therms of natural gas.
What are 420 432 W ONTARIO ST's carbon emissions?
420 432 W ONTARIO ST reported 203 tCO₂e of greenhouse-gas emissions (2.5 kgCO₂e/ft²) for 2022.
Where is 420 432 W ONTARIO ST?
420 432 W ONTARIO ST is in Chicago, Illinois 60654. Its coordinates are 41.89323, -87.63944 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is 420 432 W ONTARIO ST and when was it built?
420 432 W ONTARIO ST has 82,716 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1999 as its year built. It is classed as multifamily housing.
Is 420 432 W ONTARIO ST 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, “420 432 W ONTARIO ST, Chicago, Illinois — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/420-432-w-ontario-st-c6da4106 (data as of October 2, 2026).