Royal Capitol Plaza
Multifamily Housing in Honolulu, HI · 876 Curtis St, Honolulu
At a glance
Royal Capitol Plaza is a 227,792-square-foot multifamily housing building at 876 Curtis St, Honolulu in Honolulu, Hawaii, built in 1987. In its 2025 Honolulu benchmarking disclosure it reported a site energy-use intensity of 31.1 kBtu/ft² and 1,494 tCO₂e of greenhouse-gas emissions.
Ordinance 22-17 (City & County of Honolulu) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 31.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,494 tCO₂e |
| GHG intensity | — |
| Electricity | 2,075,356 kWh |
| Water use | 15,789 kgal |
| Gross floor area | 227,792 sq ft |
| Source record | honolulu:04QFJ1868556006:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 31.1 kBtu/ft² | 1,494 tCO₂e | |
| 2024 | 100 | ±0 | 30.6 kBtu/ft² | 1,469 tCO₂e |
| 2023 | 100 | 31.3 kBtu/ft² | 1,578 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
- 876 Curtis 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 Royal Capitol Plaza compare with other multifamily housing buildings in Honolulu?
The latest disclosures cover 378 multifamily housing buildings in Honolulu, out of 799 buildings citywide. Its site EUI of 31.1 kBtu/ft² is about 10% above the average of 28.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 227,792 sq ft, it is about 43% above the average floor area of 159,294 sq ft for those buildings. It was built in 1987, 8 years later than the group's average year built (1979). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Royal Capitol Plaza's energy performance changed over time?
BuildingCensus holds 3 Honolulu disclosures for Royal Capitol Plaza, covering report years 2023–2025. Its ENERGY STAR score was 100 in both 2023 and 2024. Site EUI moved from 31.3 kBtu/ft² (2023) to 31.1 kBtu/ft² (2025), a 1% decrease. Reported emissions went from 1,578 tCO₂e to 1,494 tCO₂e over the same span (down 5%).
What does a site EUI of 31.1 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. Royal Capitol Plaza's 31.1 kBtu/ft² across 227,792 sq ft works out to about 7.1 billion Btu (2,076 MWh-equivalent) in 2025. The disclosure also reports 2,075,356 kWh of electricity and 15,789 thousand gallons of water for the year.
Which law requires Royal Capitol Plaza to report its energy use?
Royal Capitol Plaza 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:04QFJ1868556006:2025). Honolulu's Ordinance 22-17 requires commercial buildings over 25,000 sq ft on Oʻahu to benchmark annually, with public disclosure of results.
More multifamily housing buildings in Honolulu
- Windward Passage· 225,000 sq ft · EUI 20.0 kBtu/ft²
- 2121 Ala Wai· 220,500 sq ft · EUI 16.9 kBtu/ft²
- Mount Terrace· 220,000 sq ft · EUI 28.3 kBtu/ft²
- Pearlridge Gardens & Tower· 216,804 sq ft · score 99 (A)
- Country Club Village Phase 2 - Building 5· 214,390 sq ft · EUI 30.6 kBtu/ft²
- Princess Leilani· 212,300 sq ft · score 100 (A)
- Multifamily Housing buildings in Honolulu· 378 benchmarked
- All Honolulu benchmarked buildings· Ordinance 22-17 (City & County of Honolulu)
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- Least efficient large buildings in Honolulu
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Frequently asked questions
What is Royal Capitol Plaza's energy grade?
Royal Capitol Plaza did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 31.1 kBtu/ft².
How much energy does Royal Capitol Plaza use?
Its 2025 site energy-use intensity was 31.1 kBtu/ft² across 227,792 sq ft, including 2,075,356 kWh of electricity.
What are Royal Capitol Plaza's carbon emissions?
Royal Capitol Plaza reported 1,494 tCO₂e of greenhouse-gas emissions for 2025.
Where is Royal Capitol Plaza?
Royal Capitol Plaza is at 876 Curtis St, Honolulu, in Honolulu, Hawaii.
How big is Royal Capitol Plaza and when was it built?
Royal Capitol Plaza has 227,792 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1987 as its year built. It is classed as multifamily housing.
Is Royal Capitol Plaza 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, “Royal Capitol Plaza, Honolulu, Hawaii — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/honolulu/royal-capitol-plaza-94507873 (data as of July 9, 2026).