3900 Lake Shore Drive Condominium Association

How does 3900 Lake Shore Drive Condominium Association 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. 3900 Lake Shore Drive Condominium Association's ENERGY STAR score of 72 compares with an average of 62 across the 1,472 that report a score; it scores higher than 56% of them and lower than 43%. Its site EUI of 72.6 kBtu/ft² is roughly in line with the average of 72.0 kBtu/ft². Its emissions intensity of 5.2 kgCO₂e/ft² is about 10% below the group average of 5.8 kgCO₂e/ft².

At 261,137 sq ft, it is about 27% above the average floor area of 206,097 sq ft for those buildings. It was built in 1959, 12 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 3900 Lake Shore Drive Condominium Association's energy performance changed over time?

BuildingCensus holds 9 Chicago disclosures for 3900 Lake Shore Drive Condominium Association, covering report years 2015–2023. Its ENERGY STAR score went from 62 in 2015 to 72 in 2023 (+10 points); its best year on file was 2021, at 86. Site EUI moved from 100.1 kBtu/ft² (2015) to 72.6 kBtu/ft² (2023), a 27% decrease. Reported emissions went from 1,764 tCO₂e to 1,366 tCO₂e over the same span (down 23%).

What does an ENERGY STAR score of 72 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 72 means the building performs better than about 72% of its national peers. BuildingCensus bands the score into report-card grades; 72 falls in band B — above median (70–84). It sits 3 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. 3900 Lake Shore Drive Condominium Association's 72.6 kBtu/ft² across 261,137 sq ft works out to about 19 billion Btu (5,556 MWh-equivalent) in 2023. Its source EUI of 103.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,212,341 kWh of electricity and 148,133 therms of natural gas for the year.

Which law requires 3900 Lake Shore Drive Condominium Association to report its energy use?

3900 Lake Shore Drive Condominium Association 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:241168:2023). Covered buildings that fail to benchmark and report face fines of up to $100 plus $25 per day of violation under the ordinance.