2105 E Hamilton Ave

How does 2105 E Hamilton Ave compare with other office buildings in San José?

The latest disclosures cover 408 office buildings in San José, out of 1,790 buildings citywide. 2105 E Hamilton Ave's ENERGY STAR score of 96 compares with an average of 67 across the 283 that report a score; it scores higher than 86% of them and lower than 13%. Its site EUI of 40.8 kBtu/ft² is about 37% below the average of 64.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.

At 66,778 sq ft, it is about 30% below the average floor area of 95,555 sq ft for those buildings. Its 1984 construction date is close to the group's average year built (1986). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².

How has 2105 E Hamilton Ave's energy performance changed over time?

BuildingCensus holds 7 San José disclosures for 2105 E Hamilton Ave, covering report years 2018–2024. Its ENERGY STAR score went from 45 in 2019 to 96 in 2024 (+51 points). Site EUI moved from 74.9 kBtu/ft² (2019) to 40.8 kBtu/ft² (2024), a 46% decrease. Reported emissions went from 291 tCO₂e to 170 tCO₂e over the same span (down 42%).

What does an ENERGY STAR score of 96 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 96 means the building performs better than about 96% of its national peers. BuildingCensus bands the score into report-card grades; 96 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. 2105 E Hamilton Ave's 40.8 kBtu/ft² across 66,778 sq ft works out to about 2.7 billion Btu (798 MWh-equivalent) in 2024. Its source EUI of 93.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 562,662 kWh of electricity, 8,014 therms of natural gas and 2,158 thousand gallons of water for the year.

Which law requires 2105 E Hamilton Ave to report its energy use?

2105 E Hamilton Ave 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:1136-0-00:2024). San José's BPO requires buildings over 20,000 sq ft to benchmark annually and complete beyond-benchmarking performance improvements on a rolling schedule.