Stranda Apartments

How does Stranda Apartments compare with other multifamily (5+ units) buildings in Berkeley?

The latest disclosures cover 202 multifamily (5+ units) buildings in Berkeley, out of 440 buildings citywide. Stranda Apartments's ENERGY STAR score of 98 compares with an average of 92 across the 156 that report a score; it scores higher than 36% of them and lower than 55%. Its site EUI of 24.4 kBtu/ft² is about 26% below the average of 32.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 20,372 sq ft, it is about 39% below the average floor area of 33,316 sq ft for those buildings.

How has Stranda Apartments's energy performance changed over time?

BuildingCensus holds 4 Berkeley disclosures for Stranda Apartments, covering report years 2022–2025. Its ENERGY STAR score went from 95 in 2022 to 98 in 2025 (+3 points). Site EUI moved from 27.8 kBtu/ft² (2022) to 24.4 kBtu/ft² (2025), a 12% decrease.

What does an ENERGY STAR score of 98 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 98 means the building performs better than about 98% of its national peers. BuildingCensus bands the score into report-card grades; 98 falls in band A — high performer (85–100). 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 Berkeley, 82% 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. Stranda Apartments's 24.4 kBtu/ft² across 20,372 sq ft works out to about 0.5 billion Btu (146 MWh-equivalent) in 2025. Its source EUI of 50.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 83,868 kWh of electricity and 2,116 therms of natural gas for the year.

Which law requires Stranda Apartments to report its energy use?

Stranda Apartments reports under BESO (BMC Chapter 19.81), the legal basis of Berkeley's Building Emissions Saving Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record berkeley:7850:2025). Berkeley's BESO requires annual benchmarking for commercial and multifamily buildings of 15,000 sq ft or more, with energy assessments at time of listing and every five years for buildings of 25,000 sq ft or more.