4680 Hamilton Avenue

How does 4680 Hamilton Avenue compare with other multifamily housing buildings in San José?

The latest disclosures cover 476 multifamily housing buildings in San José, out of 1,790 buildings citywide. 4680 Hamilton Avenue's ENERGY STAR score of 92 compares with an average of 86 across the 435 that report a score; it scores higher than 45% of them and lower than 52%. Its site EUI of 37.2 kBtu/ft² is roughly in line with the average of 35.3 kBtu/ft².

At 31,748 sq ft, it is about 80% below the average floor area of 157,540 sq ft for those buildings. It was built in 1968, 19 years earlier than the group's average year built (1987). 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 4680 Hamilton Avenue's energy performance changed over time?

BuildingCensus holds 6 San José disclosures for 4680 Hamilton Avenue, covering report years 2019–2024. Its ENERGY STAR score went from 81 in 2020 to 92 in 2024 (+11 points). Site EUI moved from 44.3 kBtu/ft² (2020) to 37.2 kBtu/ft² (2024), a 16% decrease. Reported emissions went from 82 tCO₂e to 69 tCO₂e over the same span (down 15%).

What does an ENERGY STAR score of 92 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 92 means the building performs better than about 92% of its national peers. BuildingCensus bands the score into report-card grades; 92 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 San José, 69% 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. 4680 Hamilton Avenue's 37.2 kBtu/ft² across 31,748 sq ft works out to about 1.2 billion Btu (346 MWh-equivalent) in 2024. Its source EUI of 66.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 147,141 kWh of electricity, 6,802 therms of natural gas and 1,963 thousand gallons of water for the year.

Which law requires 4680 Hamilton Avenue to report its energy use?

4680 Hamilton Avenue reports under San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance), the legal basis of San José's Energy and Water Building Performance Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record san_jose:1256-0-00:2024). San José's BPO requires buildings over 20,000 sq ft to benchmark annually and complete beyond-benchmarking performance improvements on a rolling schedule.