The Plaza at Waikiki
Senior Living Community in Honolulu, HI · 1812 Kalakaua Ave, Ewa Beach
At a glance
The Plaza at Waikiki is a 117,096-square-foot senior living community building at 1812 Kalakaua Ave, Ewa Beach in Honolulu, Hawaii, built in 2016. In its 2025 Honolulu benchmarking disclosure it reported a site energy-use intensity of 28.9 kBtu/ft² and 673 tCO₂e of greenhouse-gas emissions.
Ordinance 22-17 (City & County of Honolulu) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 28.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 673 tCO₂e |
| GHG intensity | — |
| Electricity | 990,267 kWh |
| Water use | 5,374 kgal |
| Gross floor area | 117,096 sq ft |
| Source record | honolulu:04QFJ2088254638:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 28.9 kBtu/ft² | 673 tCO₂e | |
| 2024 | — | 30.6 kBtu/ft² | 785 tCO₂e | |
| 2023 | — | 51.6 kBtu/ft² | 1,337 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
- 1812 Kalakaua Ave, Ewa Beach
- 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 Plaza at Waikiki compare with other senior living community buildings in Honolulu?
The latest disclosures cover 12 senior living community buildings in Honolulu, out of 799 buildings citywide. Its site EUI of 28.9 kBtu/ft² is about 24% below the average of 38.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 117,096 sq ft, it is about 32% below the average floor area of 171,938 sq ft for those buildings. It was built in 2016, 9 years later than the group's average year built (2007). Across all 24 jurisdictions BuildingCensus covers, the 1,181 senior living community buildings average an ENERGY STAR score of 71 and a site EUI of 73.6 kBtu/ft².
How has The Plaza at Waikiki's energy performance changed over time?
BuildingCensus holds 3 Honolulu disclosures for The Plaza at Waikiki, covering report years 2023–2025. Site EUI moved from 51.6 kBtu/ft² (2023) to 28.9 kBtu/ft² (2025), a 44% decrease. Reported emissions went from 1,337 tCO₂e to 673 tCO₂e over the same span (down 50%).
What does a site EUI of 28.9 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 Plaza at Waikiki's 28.9 kBtu/ft² across 117,096 sq ft works out to about 3.4 billion Btu (992 MWh-equivalent) in 2025. The disclosure also reports 990,267 kWh of electricity and 5,374 thousand gallons of water for the year.
Which law requires The Plaza at Waikiki to report its energy use?
The Plaza at 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:04QFJ2088254638:2025). Honolulu's Ordinance 22-17 requires commercial buildings over 25,000 sq ft on Oʻahu to benchmark annually, with public disclosure of results.
More senior living community buildings in Honolulu
- The Plaza At Peal City· 100,529 sq ft · EUI 34.2 kBtu/ft²
- Plaza At Kaneohe· 97,474 sq ft · EUI 30.1 kBtu/ft²
- Plaza At Punchbowl· 94,383 sq ft · EUI 34.2 kBtu/ft²
- Plaza at Moanalua· 90,554 sq ft · EUI 41.6 kBtu/ft²
- Ilima at Leihano· 79,851 sq ft · EUI 50.2 kBtu/ft²
- Plaza At Mililani· 68,802 sq ft · EUI 36.4 kBtu/ft²
- 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 Plaza at Waikiki's energy grade?
The Plaza at Waikiki did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 28.9 kBtu/ft².
How much energy does The Plaza at Waikiki use?
Its 2025 site energy-use intensity was 28.9 kBtu/ft² across 117,096 sq ft, including 990,267 kWh of electricity.
What are The Plaza at Waikiki's carbon emissions?
The Plaza at Waikiki reported 673 tCO₂e of greenhouse-gas emissions for 2025.
Where is The Plaza at Waikiki?
The Plaza at Waikiki is at 1812 Kalakaua Ave, Ewa Beach, in Honolulu, Hawaii.
How big is The Plaza at Waikiki and when was it built?
The Plaza at Waikiki has 117,096 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2016 as its year built. It is classed as senior living community.
Is The Plaza at 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 Plaza at Waikiki, Honolulu, Hawaii — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/honolulu/the-plaza-at-waikiki-9fa9bc67 (data as of July 9, 2026).