Ratan Hospitality
Hotel in California, CA · 259 Gentle Springs Lane, Diamond Bar · 91765
At a glance
Ratan Hospitality is a 53,361-square-foot hotel at 259 Gentle Springs Lane, Diamond Bar in Diamond Bar, California, built in 1989. In its 2022 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A) and 49 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 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | 49 tCO₂e |
| GHG intensity | 0.9 kgCO₂e/ft² |
| Electricity | 515 kWh |
| Natural gas | 9,228 therms |
| Gross floor area | 53,361 sq ft |
| Source record | california:27432578:2022 |
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
- 259 Gentle Springs Lane, Diamond Bar
- City
- California
- State
- California
- ZIP
- 91765
- Coordinates
- 34.02058, -117.81299
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Ratan Hospitality compare with other hotel buildings in California?
The latest disclosures cover 1,599 hotel buildings in California, out of 40,029 buildings citywide. Ratan Hospitality'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 emissions intensity of 0.9 kgCO₂e/ft² is about 78% below the group average of 4.0 kgCO₂e/ft².
At 53,361 sq ft, it is about 68% below 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.
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.
Which law requires Ratan Hospitality to report its energy use?
Ratan Hospitality 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 2022 disclosure (source record california:27432578:2022). 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
- Grande Colonial· 53,170 sq ft · score 75 (B)
- Best Western Plus Carriage Inn· 53,000 sq ft · score 97 (A)
- Home2 Suites· 53,000 sq ft · score 1 (D)
- Hampton Inn And Suites· 53,000 sq ft · score 76 (B)
- Hilton Garden Inn Folsom· 52,853 sq ft · score 79 (B)
- 8747-San Jose-South-Edenvale· 52,822 sq ft · score 72 (B)
- 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 Ratan Hospitality's energy grade?
Ratan Hospitality scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2022 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Ratan Hospitality use?
No energy-use intensity was reported for 2022.
What are Ratan Hospitality's carbon emissions?
Ratan Hospitality reported 49 tCO₂e of greenhouse-gas emissions (0.9 kgCO₂e/ft²) for 2022.
Where is Ratan Hospitality?
Ratan Hospitality is at 259 Gentle Springs Lane, Diamond Bar, in Diamond Bar, California 91765. Its coordinates are 34.02058, -117.81299 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Ratan Hospitality and when was it built?
Ratan Hospitality has 53,361 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1989 as its year built. It is classed as hotel.
Is Ratan Hospitality covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2022 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, “Ratan Hospitality, Diamond Bar, California — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/california/ratan-hospitality-71d68724 (data as of July 9, 2026).