Tc1 803
Office in California, CA · 803 11Th Avenue, Sunnyvale · 94089
At a glance
Tc1 803 is a 175,082-square-foot office building at 803 11Th Avenue, Sunnyvale in Sunnyvale, California, built in 2001. It is listed in the 2021 Building Energy Benchmarking Program (statewide) disclosure without energy figures: no ENERGY STAR score, energy use or emissions were published for it that year. Its most recent reported figures are from 2019, when it scored 70 out of 100 on ENERGY STAR with a site EUI of 69.4 kBtu/ft².
No energy data reported for 2021
Tc1 803 appears in the 2021 Building Energy Benchmarking Program (statewide) disclosure, but no ENERGY STAR score, energy use or emissions were published for it — the building did not report benchmarking data for that year. Earlier reported years are in the table below.
Floor area on file: 175,082 sq ft · Built 2001
Source record california:4402021:2021
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2021latest | — | — | — | |
| 2020 | — | — | — | |
| 2019 | 70 | -1 | 69.4 kBtu/ft² | 769 tCO₂e |
| 2018 | 71 | 65.7 kBtu/ft² | 758 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.
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Location
- Address
- 803 11Th Avenue, Sunnyvale
- City
- California
- State
- California
- ZIP
- 94089
- Coordinates
- 37.40365, -122.03158
Within ~1 km
Nearby benchmarked buildings
- Y-Moffett Park Tech Cornersscore —
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Parking · 461,268 sq ft
- 955 11Th - Parking Garage 1score —
Parking · 406,775 sq ft
- Building D-1100 Enterprise Wayscore 94
Office · 357,481 sq ft
- Sjc-11score —
Office · 356,481 sq ft
- Y-905 11Th Avenue - Building 2score 71
Office · 350,633 sq ft
See also: most efficient in California · biggest emitters
How has Tc1 803's energy performance changed over time?
BuildingCensus holds 4 California disclosures for Tc1 803, covering report years 2018–2021. Its ENERGY STAR score went from 71 in 2018 to 70 in 2019 (-1 points); its best year on file was 2018, at 71. Site EUI moved from 65.7 kBtu/ft² (2018) to 69.4 kBtu/ft² (2019), an 6% increase. Reported emissions went from 758 tCO₂e to 769 tCO₂e over the same span (up 1%).
Which law requires Tc1 803 to report its energy use?
Tc1 803 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 2021 disclosure (source record california:4402021:2021). 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
- Schilling Place - Records Retention Center· 175,008 sq ft · EUI 17.2 kBtu/ft²
- Shoomer Limited Partnership 305 E. 9Th St· 174,917 sq ft · score 97 (A)
- Market Square Tower 2· 174,858 sq ft · score 84 (B)
- Market Square Tower 1· 174,821 sq ft · score 77 (B)
- Education Center· 174,788 sq ft · score 91 (A)
- Sutter Square· 174,689 sq ft · score 65 (C)
- 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 Tc1 803's energy grade?
Tc1 803 has no grade: it did not report energy data for 2021. The 2021 Building Energy Benchmarking Program (statewide) disclosure lists the building but publishes no ENERGY STAR score, energy use or emissions for it.
Where is Tc1 803?
Tc1 803 is at 803 11Th Avenue, Sunnyvale, in Sunnyvale, California 94089. Its coordinates are 37.40365, -122.03158 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
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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, “Tc1 803, Sunnyvale, California — 2021 benchmarking disclosure”, https://buildingcensus.com/buildings/california/tc1-803-c36d1002 (data as of July 9, 2026).