Oak Building
Multifamily Housing in Evanston, IL · 1133-39 Oak Street · 60202
At a glance
Oak Building is a 34,425-square-foot multifamily housing building at 1133-39 Oak Street in Evanston, Illinois, built in 1924. In its 2019 Evanston benchmarking disclosure it reported an ENERGY STAR score of 78 out of 100 (grade B), a site energy-use intensity of 62.7 kBtu/ft² and 141 tCO₂e of greenhouse-gas emissions. That score is higher than 45% of the 149 scored multifamily housing buildings in Evanston.
Healthy Buildings Ordinance (1-O-25) · reporting year 2019
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 78 (band B) |
| Site EUI | 62.7 kBtu/ft² |
| Source EUI | 78.7 kBtu/ft² |
| GHG emissions | 141 tCO₂e |
| GHG intensity | 4.1 kgCO₂e/ft² |
| Electricity | 73,726 kWh |
| Natural gas | 18,957 therms |
| Water use | 846 kgal |
| Gross floor area | 34,425 sq ft |
| Source record | evanston:104690:2019 |
Compliance context
Healthy Buildings Ordinance (1-O-25)
Evanston's Healthy Buildings Ordinance (1-O-25) requires buildings of 20,000 sq ft or more to benchmark and report energy and water use by June 30 each year; the city says non-compliance fines of $250 per month begin January 1, 2027.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 1133-39 Oak Street
- City
- Evanston
- State
- Illinois
- ZIP
- 60202
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Evanston · biggest emitters
How does Oak Building compare with other multifamily housing buildings in Evanston?
The latest disclosures cover 172 multifamily housing buildings in Evanston, out of 366 buildings citywide. Oak Building's ENERGY STAR score of 78 compares with an average of 71 across the 149 that report a score; it scores higher than 45% of them and lower than 52%. Its site EUI of 62.7 kBtu/ft² is about 17% below the average of 75.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.1 kgCO₂e/ft² is about 28% below the group average of 5.7 kgCO₂e/ft².
At 34,425 sq ft, it is about 57% below the average floor area of 80,265 sq ft for those buildings. It was built in 1924, 25 years earlier than the group's average year built (1949). 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.
What does an ENERGY STAR score of 78 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 78 means the building performs better than about 78% of its national peers. BuildingCensus bands the score into report-card grades; 78 falls in band B — above median (70–84). 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 Evanston, 45% 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. Oak Building's 62.7 kBtu/ft² across 34,425 sq ft works out to about 2.2 billion Btu (633 MWh-equivalent) in 2019. Its source EUI of 78.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 73,726 kWh of electricity, 18,957 therms of natural gas and 846 thousand gallons of water for the year.
Which law requires Oak Building to report its energy use?
Oak Building reports under the Healthy Buildings Ordinance (1-O-25), the legal basis of Evanston's Building Energy and Water Use Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2019 disclosure (source record evanston:104690:2019). Evanston's Healthy Buildings Ordinance (1-O-25) requires buildings of 20,000 sq ft or more to benchmark and report energy and water use by June 30 each year; the city says non-compliance fines of $250 per month begin January 1, 2027.
More multifamily housing buildings in Evanston
- 1616, 1616 Hinman Ave.· 34,400 sq ft · score 62 (C)
- 803 Dobson St· 34,308 sq ft · score 66 (C)
- 1400 Central· 34,032 sq ft · score 23 (D)
- 1320 CHICAGO APARTMENTS· 33,228 sq ft · score 89 (A)
- 818-822 Noyes Street· 32,889 sq ft · score 96 (A)
- 617 - 625 GROVE APARTMENTS· 32,753 sq ft · score 74 (B)
- Multifamily Housing buildings in Evanston· 172 benchmarked
- All Evanston benchmarked buildings· Healthy Buildings Ordinance (1-O-25)
- Most efficient large buildings in Evanston
- Least efficient large buildings in Evanston
- Biggest emitters in Evanston
Frequently asked questions
What is Oak Building's energy grade?
Oak Building scores 78 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2019 Evanston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Oak Building use?
Its 2019 site energy-use intensity was 62.7 kBtu/ft² (78.7 kBtu/ft² source) across 34,425 sq ft, including 73,726 kWh of electricity and 18,957 therms of natural gas.
What are Oak Building's carbon emissions?
Oak Building reported 141 tCO₂e of greenhouse-gas emissions (4.1 kgCO₂e/ft²) for 2019.
Where is Oak Building?
Oak Building is at 1133-39 Oak Street, in Evanston, Illinois 60202.
How big is Oak Building and when was it built?
Oak Building has 34,425 sq ft of gross floor area, as reported in its 2019 disclosure. The disclosure lists 1924 as its year built. It is classed as multifamily housing.
Is Oak Building covered by the Healthy Buildings Ordinance (1-O-25)?
Yes — it appears in the 2019 Building Energy and Water Use Benchmarking disclosure, which lists the buildings reporting under the Healthy Buildings Ordinance (1-O-25).
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About this data
Source: Building Energy and Water Use Benchmarking (Healthy Buildings Ordinance (1-O-25)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Oak Building, Evanston, Illinois — 2019 benchmarking disclosure”, https://buildingcensus.com/buildings/evanston/oak-building-703b83e1 (data as of July 9, 2026).