Wallenberg Hall
Office in California, CA · 450 Serra Mall Bldg. 160, Stanford · 94305
At a glance
Wallenberg Hall is a 78,037-square-foot office building at 450 Serra Mall Bldg. 160, Stanford in Stanford, California, built in 1900. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 73 out of 100 (grade B), a site energy-use intensity of 34.9 kBtu/ft² and 181 tCO₂e of greenhouse-gas emissions. That score is higher than 33% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 73 (band B) |
| Site EUI | 34.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 181 tCO₂e |
| GHG intensity | 2.3 kgCO₂e/ft² |
| Electricity | 797,236 kWh |
| Gross floor area | 78,037 sq ft |
| Source record | california:10924644:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 73 | -6 | 34.9 kBtu/ft² | 181 tCO₂e |
| 2022 | 79 | -8 | 32.2 kBtu/ft² | 172 tCO₂e |
| 2021 | 87 | +3 | 26.2 kBtu/ft² | 124 tCO₂e |
| 2020 | 84 | +29 | 28.8 kBtu/ft² | 149 tCO₂e |
| 2019 | 55 | 74.6 kBtu/ft² | 375 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
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.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 450 Serra Mall Bldg. 160, Stanford
- City
- California
- State
- California
- ZIP
- 94305
- Coordinates
- 37.42835, -122.16906
Within ~1 km
Nearby benchmarked buildings
- Stanford Hospitalscore 27
Hospital (General Medical & Surgical) · 1,125,960 sq ft
- Main & West Combinedscore 63
Hospital (General Medical & Surgical) · 1,068,607 sq ft
- Roble Field Garagescore —
Parking · 500,800 sq ft
- Wilbur Field Garagescore —
Parking · 403,414 sq ft
- Roth Way Garagescore —
Parking · 389,798 sq ft
Parking · 322,273 sq ft
See also: most efficient in California · biggest emitters
How does Wallenberg Hall compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. Wallenberg Hall's ENERGY STAR score of 73 compares with an average of 75 across the 4,912 that report a score; it scores higher than 33% of them and lower than 66%. Its site EUI of 34.9 kBtu/ft² is about 38% below the average of 56.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.3 kgCO₂e/ft² is about 36% below the group average of 3.6 kgCO₂e/ft².
At 78,037 sq ft, it is about half of the average floor area of 151,937 sq ft for those buildings. It was built in 1900, 85 years earlier than the group's average year built (1985). 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 Wallenberg Hall's energy performance changed over time?
BuildingCensus holds 5 California disclosures for Wallenberg Hall, covering report years 2019, 2020, 2021, 2022, 2024. Its ENERGY STAR score went from 55 in 2019 to 73 in 2024 (+18 points); its best year on file was 2021, at 87. Site EUI moved from 74.6 kBtu/ft² (2019) to 34.9 kBtu/ft² (2024), a 53% decrease. Reported emissions went from 375 tCO₂e to 181 tCO₂e over the same span (down 52%).
What does an ENERGY STAR score of 73 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 73 means the building performs better than about 73% of its national peers. BuildingCensus bands the score into report-card grades; 73 falls in band B — above median (70–84). It sits 2 points below 75, the threshold for ENERGY STAR certification. 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. Wallenberg Hall's 34.9 kBtu/ft² across 78,037 sq ft works out to about 2.7 billion Btu (798 MWh-equivalent) in 2024. The disclosure also reports 797,236 kWh of electricity for the year.
Which law requires Wallenberg Hall to report its energy use?
Wallenberg Hall 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:10924644:2024). 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.
More office buildings in California
- 3901 Lennane· 78,036 sq ft · score 93 (A)
- Sfusd - Administration - Franklin· 78,028 sq ft · score 15 (D)
- 420 Taylor St, San Francisco, Ca 94102· 78,024 sq ft · score 53 (D)
- 250 Bryant St· 78,000 sq ft
- Royal Plaza· 78,000 sq ft · score 82 (B)
- Crenshaw Medical Arts Center· 77,970 sq ft · score 70 (B)
- Office buildings in California· 6,214 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is Wallenberg Hall's energy grade?
Wallenberg Hall scores 73 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Wallenberg Hall use?
Its 2024 site energy-use intensity was 34.9 kBtu/ft² across 78,037 sq ft, including 797,236 kWh of electricity.
What are Wallenberg Hall's carbon emissions?
Wallenberg Hall reported 181 tCO₂e of greenhouse-gas emissions (2.3 kgCO₂e/ft²) for 2024.
Where is Wallenberg Hall?
Wallenberg Hall is at 450 Serra Mall Bldg. 160, Stanford, in Stanford, California 94305. Its coordinates are 37.42835, -122.16906 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Wallenberg Hall and when was it built?
Wallenberg Hall has 78,037 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1900 as its year built. It is classed as office.
Is Wallenberg Hall covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
Working with California building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Wallenberg Hall, Stanford, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/wallenberg-hall-69435c3c (data as of July 9, 2026).