Lathrop 1A

How does Lathrop 1A 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. Lathrop 1A's ENERGY STAR score of 69 compares with an average of 62 across the 1,472 that report a score; it scores higher than 53% of them and lower than 46%. Its site EUI of 48.3 kBtu/ft² is about 33% 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 4.5 kgCO₂e/ft² is about 22% below the group average of 5.8 kgCO₂e/ft².

At 489,845 sq ft, it is about 138% above the average floor area of 206,097 sq ft for those buildings. It was built in 1937, 34 years earlier 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 Lathrop 1A's energy performance changed over time?

BuildingCensus holds 9 Chicago disclosures for Lathrop 1A, covering report years 2015–2023. Its ENERGY STAR score went from 7 in 2015 to 69 in 2023 (+62 points); its best year on file was 2016, at 100. Site EUI moved from 160.3 kBtu/ft² (2015) to 48.3 kBtu/ft² (2023), a 70% decrease. Reported emissions went from 7,932 tCO₂e to 2,186 tCO₂e over the same span (down 72%).

What does an ENERGY STAR score of 69 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 69 means the building performs better than about 69% of its national peers. BuildingCensus bands the score into report-card grades; 69 falls in band C — below median (55–69). It sits 6 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. Lathrop 1A's 48.3 kBtu/ft² across 489,845 sq ft works out to about 23.7 billion Btu (6,934 MWh-equivalent) in 2023. Its source EUI of 89.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 3,138,838 kWh of electricity, 129,465 therms of natural gas and 5,546 thousand gallons of water for the year.

Which law requires Lathrop 1A to report its energy use?

Lathrop 1A 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:250073:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.