1243 San Tomas Aquino Rd
Library in San José, CA · 95117
At a glance
1243 San Tomas Aquino Rd is a 20,123-square-foot library in San José, California, built in 2003. In its 2024 San José benchmarking disclosure it reported a site energy-use intensity of 90.7 kBtu/ft² and 111 tCO₂e of greenhouse-gas emissions.
San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 90.7 kBtu/ft² |
| Source EUI | 190.6 kBtu/ft² |
| GHG emissions | 111 tCO₂e |
| GHG intensity | — |
| Electricity | 321,649 kWh |
| Natural gas | 7,271 therms |
| Water use | 164 kgal |
| Gross floor area | 20,123 sq ft |
| Source record | san_jose:1185-1-00:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 90.7 kBtu/ft² | 111 tCO₂e | |
| 2023 | — | 79.4 kBtu/ft² | 103 tCO₂e | |
| 2022 | — | 67.7 kBtu/ft² | 91 tCO₂e | |
| 2021 | — | 62.4 kBtu/ft² | 83 tCO₂e | |
| 2020 | — | 77.9 kBtu/ft² | — | |
| 2019 | — | 81.1 kBtu/ft² | — |
Compliance context
San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance)
San José's BPO requires buildings over 20,000 sq ft to benchmark annually and complete beyond-benchmarking performance improvements on a rolling schedule.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 1243 San Tomas Aquino Rd
- City
- San José
- State
- California
- ZIP
- 95117
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in San José · biggest emitters
How does 1243 San Tomas Aquino Rd compare with other library buildings in San José?
The latest disclosures cover 14 library buildings in San José, out of 1,790 buildings citywide. Its site EUI of 90.7 kBtu/ft² is about 27% above the average of 71.3 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 20,123 sq ft, it is about 19% below the average floor area of 24,737 sq ft for those buildings. It was built in 2003, 4 years earlier than the group's average year built (2007).
How has 1243 San Tomas Aquino Rd's energy performance changed over time?
BuildingCensus holds 6 San José disclosures for 1243 San Tomas Aquino Rd, covering report years 2019–2024. Site EUI moved from 81.1 kBtu/ft² (2019) to 90.7 kBtu/ft² (2024), an 12% increase. Reported emissions went from 83 tCO₂e to 111 tCO₂e over the same span (up 34%).
What does a site EUI of 90.7 kBtu/ft² mean?
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. 1243 San Tomas Aquino Rd's 90.7 kBtu/ft² across 20,123 sq ft works out to about 1.8 billion Btu (535 MWh-equivalent) in 2024. Its source EUI of 190.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 321,649 kWh of electricity, 7,271 therms of natural gas and 164 thousand gallons of water for the year.
Which law requires 1243 San Tomas Aquino Rd to report its energy use?
1243 San Tomas Aquino Rd 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:1185-1-00:2024). San José's BPO requires buildings over 20,000 sq ft to benchmark annually and complete beyond-benchmarking performance improvements on a rolling schedule.
More library buildings in San José
- 1772 Educational Park Dr· 18,000 sq ft · EUI 80.4 kBtu/ft²
- 4001 Evergreen Village Sq· 16,000 sq ft · EUI 49.7 kBtu/ft²
- All San José benchmarked buildings· San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance)
- Most efficient large buildings in San José
- Least efficient large buildings in San José
- Biggest emitters in San José
Frequently asked questions
What is 1243 San Tomas Aquino Rd's energy grade?
1243 San Tomas Aquino Rd did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 90.7 kBtu/ft².
How much energy does 1243 San Tomas Aquino Rd use?
Its 2024 site energy-use intensity was 90.7 kBtu/ft² (190.6 kBtu/ft² source) across 20,123 sq ft, including 321,649 kWh of electricity and 7,271 therms of natural gas.
What are 1243 San Tomas Aquino Rd's carbon emissions?
1243 San Tomas Aquino Rd reported 111 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1243 San Tomas Aquino Rd?
1243 San Tomas Aquino Rd is in San José, California 95117.
How big is 1243 San Tomas Aquino Rd and when was it built?
1243 San Tomas Aquino Rd has 20,123 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2003 as its year built. It is classed as library.
Is 1243 San Tomas Aquino Rd covered by San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance)?
Yes — it appears in the 2024 Energy and Water Building Performance Ordinance disclosure, which lists the buildings reporting under San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance).
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About this data
Source: Energy and Water Building Performance Ordinance (San José Municipal Code Ch. 17.85 (Energy and Water Building Performance Ordinance)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “1243 San Tomas Aquino Rd, San José, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/san-jose/1243-san-tomas-aquino-rd-c9e23865 (data as of July 9, 2026).