1411 Walnut St.

How does 1411 Walnut St. compare with other multifamily housing buildings in Philadelphia?

The latest disclosures cover 768 multifamily housing buildings in Philadelphia, out of 2,379 buildings citywide. 1411 Walnut St.'s ENERGY STAR score of 76 compares with an average of 59 across the 682 that report a score; it scores higher than 60% of them and lower than 38%. Its site EUI of 38.3 kBtu/ft² is about 31% below the average of 55.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 89,109 sq ft, it is about 29% below the average floor area of 125,469 sq ft for those buildings. It was built in 1942, 29 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.

What does an ENERGY STAR score of 76 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 76 means the building performs better than about 76% of its national peers. BuildingCensus bands the score into report-card grades; 76 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 Philadelphia, 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. 1411 Walnut St.'s 38.3 kBtu/ft² across 89,109 sq ft works out to about 3.4 billion Btu (1,000 MWh-equivalent) in 2024. Its source EUI of 93.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,069,681 kWh of electricity, 8,984 therms of natural gas and 1,201 thousand gallons of water for the year.

Which law requires 1411 Walnut St. to report its energy use?

1411 Walnut St. reports under Phila. Code §9-3402 / Building Energy Performance Program, the legal basis of Philadelphia's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record philadelphia:5017442:2024). Philadelphia requires commercial and multifamily buildings of 50,000+ sq ft to benchmark annually; its Building Energy Performance Program additionally requires non-residential buildings of 50,000+ sq ft to complete a tune-up or certify as high-performance every five years, with fines starting at $2,000 for non-compliance.