Island Terrace
Multifamily Housing in Chicago, IL · 6430 S Stony Island Ave · 60637
At a glance
Island Terrace is a 239,464-square-foot multifamily housing building at 6430 S Stony Island Ave in Chicago, Illinois, built in 1969. In its 2023 Chicago benchmarking disclosure it reported an ENERGY STAR score of 39 out of 100 (grade D), a site energy-use intensity of 105.4 kBtu/ft² and 1,723 tCO₂e of greenhouse-gas emissions. That score is higher than 21% 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 | 39 (band D) |
| Site EUI | 105.4 kBtu/ft² |
| Source EUI | 142.8 kBtu/ft² |
| GHG emissions | 1,723 tCO₂e |
| GHG intensity | 7.2 kgCO₂e/ft² |
| Electricity | 1,291,038 kWh |
| Natural gas | 208,312 therms |
| Water use | 20,413 kgal |
| Gross floor area | 239,464 sq ft |
| Source record | chicago:159893:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 39 | -2 | 105.4 kBtu/ft² | 1,723 tCO₂e |
| 2022 | 41 | 114.4 kBtu/ft² | 1,815 tCO₂e | |
| 2021 | — | — | — | |
| 2020 | — | — | — | |
| 2019 | 47 | +4 | 131.4 kBtu/ft² | — |
| 2018 | 43 | -2 | 136.6 kBtu/ft² | 1,715 tCO₂e |
| 2017 | 45 | 124.9 kBtu/ft² | 1,583 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
- 6430 S Stony Island Ave
- City
- Chicago
- State
- Illinois
- ZIP
- 60637
- Coordinates
- 41.94143, -87.69080
Within ~1 km
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See also: most efficient in Chicago · biggest emitters
How does Island Terrace 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. Island Terrace's ENERGY STAR score of 39 compares with an average of 62 across the 1,472 that report a score; it scores higher than 21% of them and lower than 78%. Its site EUI of 105.4 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 7.2 kgCO₂e/ft² is about 24% above the group average of 5.8 kgCO₂e/ft².
At 239,464 sq ft, it is about 16% above the average floor area of 206,097 sq ft for those buildings. Its 1969 construction date is close to 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 Island Terrace's energy performance changed over time?
BuildingCensus holds 7 Chicago disclosures for Island Terrace, covering report years 2017–2023. Its ENERGY STAR score went from 45 in 2017 to 39 in 2023 (-6 points); its best year on file was 2019, at 47. Site EUI moved from 124.9 kBtu/ft² (2017) to 105.4 kBtu/ft² (2023), a 16% decrease. Reported emissions went from 1,583 tCO₂e to 1,723 tCO₂e over the same span (up 9%).
What does an ENERGY STAR score of 39 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 39 means the building performs better than about 39% of its national peers. BuildingCensus bands the score into report-card grades; 39 falls in band D — lowest band (1–54). It sits 36 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. Island Terrace's 105.4 kBtu/ft² across 239,464 sq ft works out to about 25.2 billion Btu (7,397 MWh-equivalent) in 2023. Its source EUI of 142.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,291,038 kWh of electricity, 208,312 therms of natural gas and 20,413 thousand gallons of water for the year.
Which law requires Island Terrace to report its energy use?
Island Terrace 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:159893:2023). 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
- Linea Apartments (ln257)· 239,233 sq ft · score 43 (D)
- Cortland River North (kw021)· 238,860 sq ft · score 74 (B)
- Park Michigan· 238,677 sq ft · score 7 (D)
- Del Prado· 238,232 sq ft · EUI 56.3 kBtu/ft²
- Edge Lofts & Tower Condominium Association· 237,826 sq ft · score 58 (C)
- Alta Grand Central (lt027)· 237,020 sq ft · score 20 (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 Island Terrace's energy grade?
Island Terrace scores 39 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 Island Terrace use?
Its 2023 site energy-use intensity was 105.4 kBtu/ft² (142.8 kBtu/ft² source) across 239,464 sq ft, including 1,291,038 kWh of electricity and 208,312 therms of natural gas.
What are Island Terrace's carbon emissions?
Island Terrace reported 1,723 tCO₂e of greenhouse-gas emissions (7.2 kgCO₂e/ft²) for 2023.
Where is Island Terrace?
Island Terrace is at 6430 S Stony Island Ave, in Chicago, Illinois 60637. Its coordinates are 41.94143, -87.69080 (latitude, longitude), as published in the Chicago Energy Benchmarking file.
How big is Island Terrace and when was it built?
Island Terrace has 239,464 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1969 as its year built. It is classed as multifamily housing.
Is Island Terrace 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, “Island Terrace, Chicago, Illinois — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/chicago/island-terrace-e36f6143 (data as of October 2, 2026).