At a glance
The Imperial of Waikiki is a 145,053-square-foot hotel at 205 Lewers St, Honolulu in Honolulu, Hawaii, built in 1968. In its 2025 Honolulu benchmarking disclosure it reported a site energy-use intensity of 107.0 kBtu/ft² and 2,465 tCO₂e of greenhouse-gas emissions.
Ordinance 22-17 (City & County of Honolulu) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 107.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 2,465 tCO₂e |
| GHG intensity | — |
| Electricity | 3,046,895 kWh |
| Natural gas | 51,259 therms |
| Water use | 17,839 kgal |
| Gross floor area | 145,053 sq ft |
| Source record | honolulu:04QFJ2124953420:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 107.0 kBtu/ft² | 2,465 tCO₂e | |
| 2024 | 14 | +4 | 119.4 kBtu/ft² | 2,759 tCO₂e |
| 2023 | 10 | 124.2 kBtu/ft² | 2,897 tCO₂e |
Compliance context
Ordinance 22-17 (City & County of Honolulu)
Honolulu's Ordinance 22-17 requires commercial buildings over 25,000 sq ft on Oʻahu to benchmark annually, with public disclosure of results.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 205 Lewers St, Honolulu
- City
- Honolulu
- State
- Hawaii
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Honolulu · biggest emitters
How does The Imperial of Waikiki compare with other hotel buildings in Honolulu?
The latest disclosures cover 60 hotel buildings in Honolulu, out of 799 buildings citywide. Its site EUI of 107.0 kBtu/ft² is about 60% above the average of 67.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 145,053 sq ft, it is about 63% below the average floor area of 394,099 sq ft for those buildings. It was built in 1968, 11 years earlier than the group's average year built (1979). 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 The Imperial of Waikiki's energy performance changed over time?
BuildingCensus holds 3 Honolulu disclosures for The Imperial of Waikiki, covering report years 2023–2025. Its ENERGY STAR score went from 10 in 2023 to 14 in 2024 (+4 points). Site EUI moved from 124.2 kBtu/ft² (2023) to 107.0 kBtu/ft² (2025), a 14% decrease. Reported emissions went from 2,897 tCO₂e to 2,465 tCO₂e over the same span (down 15%).
What does a site EUI of 107.0 kBtu/ft² mean?
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. The Imperial of Waikiki's 107.0 kBtu/ft² across 145,053 sq ft works out to about 15.5 billion Btu (4,549 MWh-equivalent) in 2025. The disclosure also reports 3,046,895 kWh of electricity, 51,259 therms of natural gas and 17,839 thousand gallons of water for the year.
Which law requires The Imperial of Waikiki to report its energy use?
The Imperial of Waikiki reports under Ordinance 22-17 (City & County of Honolulu), the legal basis of Honolulu's Better Buildings Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record honolulu:04QFJ2124953420:2025). Honolulu's Ordinance 22-17 requires commercial buildings over 25,000 sq ft on Oʻahu to benchmark annually, with public disclosure of results.
More hotel buildings in Honolulu
- Embassy Suites Kapolei· 134,000 sq ft · EUI 74.4 kBtu/ft²
- Airport Honolulu Hotel· 133,992 sq ft · EUI 59.6 kBtu/ft²
- Park Shore Waikiki· 122,878 sq ft · EUI 85.9 kBtu/ft²
- Courtyard Waikiki Beach· 119,921 sq ft · EUI 69.1 kBtu/ft²
- Romer Waikiki - Leahi Tower· 110,418 sq ft · EUI 72.3 kBtu/ft²
- Hokulani· 110,000 sq ft · EUI 70.0 kBtu/ft²
- Hotel buildings in Honolulu· 60 benchmarked
- All Honolulu benchmarked buildings· Ordinance 22-17 (City & County of Honolulu)
- Most efficient large buildings in Honolulu
- Least efficient large buildings in Honolulu
- Biggest emitters in Honolulu
Frequently asked questions
What is The Imperial of Waikiki's energy grade?
The Imperial of Waikiki did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 107.0 kBtu/ft².
How much energy does The Imperial of Waikiki use?
Its 2025 site energy-use intensity was 107.0 kBtu/ft² across 145,053 sq ft, including 3,046,895 kWh of electricity and 51,259 therms of natural gas.
What are The Imperial of Waikiki's carbon emissions?
The Imperial of Waikiki reported 2,465 tCO₂e of greenhouse-gas emissions for 2025.
Where is The Imperial of Waikiki?
The Imperial of Waikiki is at 205 Lewers St, Honolulu, in Honolulu, Hawaii.
How big is The Imperial of Waikiki and when was it built?
The Imperial of Waikiki has 145,053 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1968 as its year built. It is classed as hotel.
Is The Imperial of Waikiki covered by Ordinance 22-17 (City & County of Honolulu)?
Yes — it appears in the 2025 Better Buildings Benchmarking disclosure, which lists the buildings reporting under Ordinance 22-17 (City & County of Honolulu).
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About this data
Source: Better Buildings Benchmarking (Ordinance 22-17 (City & County of Honolulu)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “The Imperial of Waikiki, Honolulu, Hawaii — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/honolulu/the-imperial-of-waikiki-d2b27e40 (data as of July 9, 2026).