The Lofts @ 1835 Arch

How does The Lofts @ 1835 Arch compare with other multifamily housing buildings in Philadelphia?

The latest disclosures cover 768 multifamily housing buildings in Philadelphia, out of 2,379 buildings citywide. The Lofts @ 1835 Arch's ENERGY STAR score of 34 compares with an average of 59 across the 682 that report a score; it scores higher than 26% of them and lower than 73%. Its site EUI of 52.4 kBtu/ft² is roughly in line with the average of 55.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 254,000 sq ft, it is about twice the average floor area of 125,469 sq ft for those buildings. It was built in 2001, 30 years later 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 The Lofts @ 1835 Arch's energy performance changed over time?

BuildingCensus holds 5 Philadelphia disclosures for The Lofts @ 1835 Arch, covering report years 2019–2023. Its ENERGY STAR score went from 37 in 2019 to 34 in 2023 (-3 points); its best year on file was 2021, at 43. Site EUI moved from 52.4 kBtu/ft² (2019) to 52.4 kBtu/ft² (2023), an 0% increase. Reported emissions went from 1,250 tCO₂e to 1,102 tCO₂e over the same span (down 12%).

What does an ENERGY STAR score of 34 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 34 means the building performs better than about 34% of its national peers. BuildingCensus bands the score into report-card grades; 34 falls in band D — lowest band (1–54). It sits 41 points below 75, the threshold for ENERGY STAR certification. 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. The Lofts @ 1835 Arch's 52.4 kBtu/ft² across 254,000 sq ft works out to about 13.3 billion Btu (3,901 MWh-equivalent) in 2023. Its source EUI of 108.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,237,424 kWh of electricity for the year.

Which law requires The Lofts @ 1835 Arch to report its energy use?

The Lofts @ 1835 Arch 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 2023 disclosure (source record philadelphia:4626213:2023). 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.