21680 Gateway Center
Office in California, CA · 21680 Gateway Center Drive, Diamond Bar · 91765
At a glance
21680 Gateway Center is a 80,753-square-foot office building at 21680 Gateway Center Drive, Diamond Bar in Diamond Bar, California, built in 2000. It is listed in the 2024 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 2023, when it scored 85 out of 100 on ENERGY STAR with a site EUI of 49.4 kBtu/ft².
No energy data reported for 2024
21680 Gateway Center appears in the 2024 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: 80,753 sq ft · Built 2000
Source record california:56760692:2024
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | — | — | |
| 2023 | 85 | 49.4 kBtu/ft² | 263 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
- 21680 Gateway Center Drive, Diamond Bar
- City
- California
- State
- California
- ZIP
- 91765
- Coordinates
- 33.99939, -117.83467
Within ~1 km
Nearby benchmarked buildings
- Holiday Inn Diamond Barscore 100
Hotel · 158,400 sq ft
- Niagara Bottling, Llc- Hqscore —
Office · 134,858 sq ft
- Gateway Corporate Center Lpscore —
Office · 85,216 sq ft
- Senita Gateway Center Bscore 81
Office · 83,085 sq ft
- Senita Gateway Center Ascore 85
Office · 80,950 sq ft
- 21700 Gateway Corporate Centerscore 94
Office · 77,731 sq ft
See also: most efficient in California · biggest emitters
How has 21680 Gateway Center's energy performance changed over time?
BuildingCensus holds 2 California disclosures for 21680 Gateway Center, covering report years 2023–2024. Only one of those years carries energy figures.
Which law requires 21680 Gateway Center to report its energy use?
21680 Gateway Center 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:56760692:2024). 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
- 210 Post St, San Francisco, Ca 94108, Usa· 80,732 sq ft · score 96 (A)
- Sherman Oaks Professional Plaza· 80,715 sq ft · score 69 (C)
- 2400 Venture Oaks· 80,697 sq ft · score 83 (B)
- Shso - 2200 River Plaza - Sacramento· 80,690 sq ft · score 93 (A)
- 500 Davis Street - San Leandro· 80,689 sq ft · score 60 (C)
- Rowell Building - District Attorney· 80,685 sq ft · score 85 (A)
- 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 21680 Gateway Center's energy grade?
21680 Gateway Center has no grade: it did not report energy data for 2024. The 2024 Building Energy Benchmarking Program (statewide) disclosure lists the building but publishes no ENERGY STAR score, energy use or emissions for it.
Where is 21680 Gateway Center?
21680 Gateway Center is at 21680 Gateway Center Drive, Diamond Bar, in Diamond Bar, California 91765. Its coordinates are 33.99939, -117.83467 (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, “21680 Gateway Center, Diamond Bar, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/21680-gateway-center-3590dc93 (data as of July 9, 2026).