The Ivy at Hawaii Kai
Multifamily Housing in Honolulu, HI · 428 Kawaihae St, Honolulu
At a glance
The Ivy at Hawaii Kai is a 350,527-square-foot multifamily housing building at 428 Kawaihae St, Honolulu in Honolulu, Hawaii, built in 1998. In its 2025 Honolulu benchmarking disclosure it reported a site energy-use intensity of 37.1 kBtu/ft² and 2,126 tCO₂e of greenhouse-gas emissions.
Ordinance 22-17 (City & County of Honolulu) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 37.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 2,126 tCO₂e |
| GHG intensity | — |
| Electricity | 2,663,615 kWh |
| Natural gas | 39,337 therms |
| Water use | 39,100 kgal |
| Gross floor area | 350,527 sq ft |
| Source record | honolulu:04QFJ3315455235:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 37.1 kBtu/ft² | 2,126 tCO₂e | |
| 2024 | 90 | 36.8 kBtu/ft² | 2,178 tCO₂e | |
| 2023 | — | — | — |
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
- 428 Kawaihae 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 Ivy at Hawaii Kai 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 37.1 kBtu/ft² is about 32% above the average of 28.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 350,527 sq ft, it is about 120% above the average floor area of 159,294 sq ft for those buildings. It was built in 1998, 19 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 The Ivy at Hawaii Kai's energy performance changed over time?
BuildingCensus holds 3 Honolulu disclosures for The Ivy at Hawaii Kai, covering report years 2023–2025. Site EUI moved from 36.8 kBtu/ft² (2024) to 37.1 kBtu/ft² (2025), an 1% increase. Reported emissions went from 2,178 tCO₂e to 2,126 tCO₂e over the same span (down 2%).
What does a site EUI of 37.1 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. The Ivy at Hawaii Kai's 37.1 kBtu/ft² across 350,527 sq ft works out to about 13 billion Btu (3,811 MWh-equivalent) in 2025. The disclosure also reports 2,663,615 kWh of electricity, 39,337 therms of natural gas and 39,100 thousand gallons of water for the year.
Which law requires The Ivy at Hawaii Kai to report its energy use?
The Ivy at Hawaii Kai 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:04QFJ3315455235:2025). 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
- Century Park Plaza· 330,652 sq ft · EUI 26.6 kBtu/ft²
- AOAO Mott-Smith· 329,963 sq ft · EUI 37.4 kBtu/ft²
- Banyan Tree Plaza· 326,910 sq ft · EUI 16.8 kBtu/ft²
- Iolani Court Plaza· 320,483 sq ft · EUI 44.9 kBtu/ft²
- Makiki Park Place· 320,000 sq ft
- The Element· 317,665 sq ft · EUI 21.9 kBtu/ft²
- Multifamily Housing buildings in Honolulu· 378 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 Ivy at Hawaii Kai's energy grade?
The Ivy at Hawaii Kai did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 37.1 kBtu/ft².
How much energy does The Ivy at Hawaii Kai use?
Its 2025 site energy-use intensity was 37.1 kBtu/ft² across 350,527 sq ft, including 2,663,615 kWh of electricity and 39,337 therms of natural gas.
What are The Ivy at Hawaii Kai's carbon emissions?
The Ivy at Hawaii Kai reported 2,126 tCO₂e of greenhouse-gas emissions for 2025.
Where is The Ivy at Hawaii Kai?
The Ivy at Hawaii Kai is at 428 Kawaihae St, Honolulu, in Honolulu, Hawaii.
How big is The Ivy at Hawaii Kai and when was it built?
The Ivy at Hawaii Kai has 350,527 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1998 as its year built. It is classed as multifamily housing.
Is The Ivy at Hawaii Kai 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 Ivy at Hawaii Kai, Honolulu, Hawaii — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/honolulu/the-ivy-at-hawaii-kai-f72f19d5 (data as of July 9, 2026).