Holiday Inn Diamond Bar
Hotel in California, CA · 21725 Gateway Center Drive, Diamond Bar · 91765
At a glance
Holiday Inn Diamond Bar is a 158,400-square-foot hotel at 21725 Gateway Center Drive, Diamond Bar in Diamond Bar, California, built in 1989. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 17.0 kBtu/ft² and 171 tCO₂e of greenhouse-gas emissions. That score is higher than 91% of the 1,525 scored hotel buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 17.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 171 tCO₂e |
| GHG intensity | 1.1 kgCO₂e/ft² |
| Electricity | 753,714 kWh |
| Gross floor area | 158,400 sq ft |
| Source record | california:6338389:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 17.0 kBtu/ft² | 171 tCO₂e |
| 2022 | 100 | ±0 | 15.0 kBtu/ft² | 173 tCO₂e |
| 2021 | 100 | +5 | 14.6 kBtu/ft² | 165 tCO₂e |
| 2019 | 95 | -3 | 45.2 kBtu/ft² | 417 tCO₂e |
| 2018 | 98 | 37.8 kBtu/ft² | 377 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
- 21725 Gateway Center Drive, Diamond Bar
- City
- California
- State
- California
- ZIP
- 91765
- Coordinates
- 34.00092, -117.83366
Within ~1 km
Nearby benchmarked buildings
- 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
- 21680 Gateway Centerscore —
Office · 80,753 sq ft
- 21700 Gateway Corporate Centerscore 94
Office · 77,731 sq ft
See also: most efficient in California · biggest emitters
How does Holiday Inn Diamond Bar compare with other hotel buildings in California?
The latest disclosures cover 1,599 hotel buildings in California, out of 40,029 buildings citywide. Holiday Inn Diamond Bar's ENERGY STAR score of 100 compares with an average of 74 across the 1,525 that report a score; it scores higher than 91% of them. Its site EUI of 17.0 kBtu/ft² is about 74% below the average of 65.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.1 kgCO₂e/ft² is about 73% below the group average of 4.0 kgCO₂e/ft².
At 158,400 sq ft, it is roughly in line with the average floor area of 167,786 sq ft for those buildings. Its 1989 construction date is close to the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has Holiday Inn Diamond Bar's energy performance changed over time?
BuildingCensus holds 5 California disclosures for Holiday Inn Diamond Bar, covering report years 2018, 2019, 2021, 2022, 2024. Its ENERGY STAR score went from 98 in 2018 to 100 in 2024 (+2 points); its best year on file was 2021, at 100. Site EUI moved from 37.8 kBtu/ft² (2018) to 17.0 kBtu/ft² (2024), a 55% decrease. Reported emissions went from 377 tCO₂e to 171 tCO₂e over the same span (down 55%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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 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. Holiday Inn Diamond Bar's 17.0 kBtu/ft² across 158,400 sq ft works out to about 2.7 billion Btu (789 MWh-equivalent) in 2024. The disclosure also reports 753,714 kWh of electricity for the year.
Which law requires Holiday Inn Diamond Bar to report its energy use?
Holiday Inn Diamond Bar 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:6338389:2024). 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 hotel buildings in California
- 306 Pasadena Ca Dena· 158,307 sq ft · score 57 (C)
- 328-Homewood Suites & Hampton Inn Long B· 155,661 sq ft · score 79 (B)
- 328&329 Long Beach Ca Hws&Hamp· 155,661 sq ft · score 31 (D)
- Embassy Suites· 155,577 sq ft · score 95 (A)
- Embassy Suites By Hilton Los Angeles Downey (Laxdw)· 155,000 sq ft · score 87 (A)
- Silverado Resort· 154,738 sq ft · score 15 (D)
- Hotel buildings in California· 1,599 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 Holiday Inn Diamond Bar's energy grade?
Holiday Inn Diamond Bar scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Holiday Inn Diamond Bar use?
Its 2024 site energy-use intensity was 17.0 kBtu/ft² across 158,400 sq ft, including 753,714 kWh of electricity.
What are Holiday Inn Diamond Bar's carbon emissions?
Holiday Inn Diamond Bar reported 171 tCO₂e of greenhouse-gas emissions (1.1 kgCO₂e/ft²) for 2024.
Where is Holiday Inn Diamond Bar?
Holiday Inn Diamond Bar is at 21725 Gateway Center Drive, Diamond Bar, in Diamond Bar, California 91765. Its coordinates are 34.00092, -117.83366 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Holiday Inn Diamond Bar and when was it built?
Holiday Inn Diamond Bar has 158,400 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1989 as its year built. It is classed as hotel.
Is Holiday Inn Diamond Bar 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).
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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, “Holiday Inn Diamond Bar, Diamond Bar, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/holiday-inn-diamond-bar-a055362e (data as of July 9, 2026).