Tierra Del Sol

How does Tierra Del Sol compare with other multifamily housing buildings in California?

The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. Tierra Del Sol's ENERGY STAR score of 100 compares with an average of 82 across the 9,612 that report a score; it scores higher than 76% of them. Its site EUI of 27.2 kBtu/ft² is about 21% below the average of 34.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.6 kgCO₂e/ft² is about 25% below the group average of 2.1 kgCO₂e/ft².

At 81,684 sq ft, it is about half of the average floor area of 150,919 sq ft for those buildings. It was built in 2008, 20 years later than the group's average year built (1988). 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 Tierra Del Sol's energy performance changed over time?

BuildingCensus holds 5 California disclosures for Tierra Del Sol, covering report years 2019, 2020, 2022, 2023, 2024. Its ENERGY STAR score went from 98 in 2019 to 100 in 2024 (+2 points); its best year on file was 2022, at 100. Site EUI moved from 31.1 kBtu/ft² (2019) to 27.2 kBtu/ft² (2024), a 13% decrease. Reported emissions went from 156 tCO₂e to 129 tCO₂e over the same span (down 17%).

What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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 California, 65% 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. Tierra Del Sol's 27.2 kBtu/ft² across 81,684 sq ft works out to about 2.2 billion Btu (651 MWh-equivalent) in 2024. The disclosure also reports 416,655 kWh of electricity and 6,462 therms of natural gas for the year.

Which law requires Tierra Del Sol to report its energy use?

Tierra Del Sol reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record california:4289612:2024). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.