Leffingwell Building
Mixed Use Property in Evanston, IL · 825 Chicago Ave · 60202
At a glance
Leffingwell Building is a 28,555-square-foot mixed use property building at 825 Chicago Ave in Evanston, Illinois, built in 1919. In its 2019 Evanston benchmarking disclosure it reported a site energy-use intensity of 88.8 kBtu/ft² and 206 tCO₂e of greenhouse-gas emissions.
Healthy Buildings Ordinance (1-O-25) · reporting year 2019
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 88.8 kBtu/ft² |
| Source EUI | 133.3 kBtu/ft² |
| GHG emissions | 206 tCO₂e |
| GHG intensity | 7.2 kgCO₂e/ft² |
| Electricity | 191,763 kWh |
| Natural gas | 18,809 therms |
| Water use | 952 kgal |
| Gross floor area | 28,555 sq ft |
| Source record | evanston:100377:2019 |
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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 825 Chicago Ave
- 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 Leffingwell Building compare with other mixed use property buildings in Evanston?
The latest disclosures cover 5 mixed use property buildings in Evanston, out of 366 buildings citywide. Its site EUI of 88.8 kBtu/ft² is about 21% below the average of 112.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 7.2 kgCO₂e/ft² is about 19% below the group average of 8.9 kgCO₂e/ft².
At 28,555 sq ft, it is about 70% below the average floor area of 94,692 sq ft for those buildings. It was built in 1919, 5 years earlier than the group's average year built (1924). Across all 24 jurisdictions BuildingCensus covers, the 1,212 mixed use property buildings average an ENERGY STAR score of 69 and a site EUI of 79.8 kBtu/ft².
What does a site EUI of 88.8 kBtu/ft² mean?
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. Leffingwell Building's 88.8 kBtu/ft² across 28,555 sq ft works out to about 2.5 billion Btu (743 MWh-equivalent) in 2019. Its source EUI of 133.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 191,763 kWh of electricity, 18,809 therms of natural gas and 952 thousand gallons of water for the year.
Which law requires Leffingwell Building to report its energy use?
Leffingwell 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:100377:2019). 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 mixed use property buildings in Evanston
Frequently asked questions
What is Leffingwell Building's energy grade?
Leffingwell Building did not report an ENERGY STAR score in its 2019 disclosure, but its site energy-use intensity was 88.8 kBtu/ft².
How much energy does Leffingwell Building use?
Its 2019 site energy-use intensity was 88.8 kBtu/ft² (133.3 kBtu/ft² source) across 28,555 sq ft, including 191,763 kWh of electricity and 18,809 therms of natural gas.
What are Leffingwell Building's carbon emissions?
Leffingwell Building reported 206 tCO₂e of greenhouse-gas emissions (7.2 kgCO₂e/ft²) for 2019.
Where is Leffingwell Building?
Leffingwell Building is at 825 Chicago Ave, in Evanston, Illinois 60202.
How big is Leffingwell Building and when was it built?
Leffingwell Building has 28,555 sq ft of gross floor area, as reported in its 2019 disclosure. The disclosure lists 1919 as its year built. It is classed as mixed use property.
Is Leffingwell 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).
Working with Evanston building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Leffingwell Building, Evanston, Illinois — 2019 benchmarking disclosure”, https://buildingcensus.com/buildings/evanston/leffingwell-building-9c15a32a (data as of July 9, 2026).