Harper SOuare Housing Co-Op
Multifamily Housing in Chicago, IL · 4800 S. Lake Park Ave. · 60615
At a glance
Harper SOuare Housing Co-Op is a 627,680-square-foot multifamily housing building at 4800 S. Lake Park Ave. in Chicago, Illinois, built in 1974. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 37 out of 100 (grade D), a site energy-use intensity of 81.8 kBtu/ft² and 3,916 tCO₂e of greenhouse-gas emissions. That score is higher than 20% 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 | 37 (band D) |
| Site EUI | 81.8 kBtu/ft² |
| Source EUI | 124.1 kBtu/ft² |
| GHG emissions | 3,916 tCO₂e |
| GHG intensity | 6.2 kgCO₂e/ft² |
| Electricity | 4,007,762 kWh |
| Natural gas | 376,967 therms |
| Gross floor area | 627,680 sq ft |
| Source record | chicago:232458:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 37 | +5 | 81.8 kBtu/ft² | 3,916 tCO₂e |
| 2022 | 32 | +6 | 94.9 kBtu/ft² | 4,338 tCO₂e |
| 2021 | 26 | +4 | 92.6 kBtu/ft² | 4,531 tCO₂e |
| 2020 | 22 | +2 | 95.5 kBtu/ft² | 4,872 tCO₂e |
| 2019 | 20 | 104.2 kBtu/ft² | 5,232 tCO₂e | |
| 2018 | — | — | — | |
| 2017 | 39 | -2 | 100.1 kBtu/ft² | 5,394 tCO₂e |
| 2016 | 41 | +7 | 101.4 kBtu/ft² | 5,530 tCO₂e |
| 2015 | 34 | 103.0 kBtu/ft² | 5,916 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
- 4800 S. Lake Park Ave.
- City
- Chicago
- State
- Illinois
- ZIP
- 60615
- Coordinates
- 41.98012, -87.65524
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does Harper SOuare Housing Co-Op 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. Harper SOuare Housing Co-Op's ENERGY STAR score of 37 compares with an average of 62 across the 1,472 that report a score; it scores higher than 20% of them and lower than 79%. Its site EUI of 81.8 kBtu/ft² is about 14% 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 6.2 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².
At 627,680 sq ft, it is about 205% above the average floor area of 206,097 sq ft for those buildings. It was built in 1974, 3 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 Harper SOuare Housing Co-Op's energy performance changed over time?
BuildingCensus holds 9 Chicago disclosures for Harper SOuare Housing Co-Op, covering report years 2015–2023. Its ENERGY STAR score went from 34 in 2015 to 37 in 2023 (+3 points); its best year on file was 2016, at 41. Site EUI moved from 103.0 kBtu/ft² (2015) to 81.8 kBtu/ft² (2023), a 21% decrease. Reported emissions went from 5,916 tCO₂e to 3,916 tCO₂e over the same span (down 34%).
What does an ENERGY STAR score of 37 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 37 means the building performs better than about 37% of its national peers. BuildingCensus bands the score into report-card grades; 37 falls in band D — lowest band (1–54). It sits 38 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. Harper SOuare Housing Co-Op's 81.8 kBtu/ft² across 627,680 sq ft works out to about 51.3 billion Btu (15,048 MWh-equivalent) in 2023. Its source EUI of 124.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,007,762 kWh of electricity and 376,967 therms of natural gas for the year.
Which law requires Harper SOuare Housing Co-Op to report its energy use?
Harper SOuare Housing Co-Op 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:232458:2023). 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
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Frequently asked questions
What is Harper SOuare Housing Co-Op's energy grade?
Harper SOuare Housing Co-Op scores 37 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 Harper SOuare Housing Co-Op use?
Its 2023 site energy-use intensity was 81.8 kBtu/ft² (124.1 kBtu/ft² source) across 627,680 sq ft, including 4,007,762 kWh of electricity and 376,967 therms of natural gas.
What are Harper SOuare Housing Co-Op's carbon emissions?
Harper SOuare Housing Co-Op reported 3,916 tCO₂e of greenhouse-gas emissions (6.2 kgCO₂e/ft²) for 2023.
Where is Harper SOuare Housing Co-Op?
Harper SOuare Housing Co-Op is at 4800 S. Lake Park Ave., in Chicago, Illinois 60615. Its coordinates are 41.98012, -87.65524 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is Harper SOuare Housing Co-Op and when was it built?
Harper SOuare Housing Co-Op has 627,680 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1974 as its year built. It is classed as multifamily housing.
Is Harper SOuare Housing Co-Op 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, “Harper SOuare Housing Co-Op, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/harper-souare-housing-co-op-4fc9c48a (data as of October 2, 2026).