Alexander Towers
Multifamily Housing in Honolulu, HI · 1226 Alexander St, Honolulu
At a glance
Alexander Towers is a 53,910-square-foot multifamily housing building at 1226 Alexander St, Honolulu in Honolulu, Hawaii, built in 1977. In its 2025 Honolulu benchmarking disclosure it reported a site energy-use intensity of 20.4 kBtu/ft² and 232 tCO₂e of greenhouse-gas emissions.
Ordinance 22-17 (City & County of Honolulu) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 20.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 232 tCO₂e |
| GHG intensity | — |
| Electricity | 321,997 kWh |
| Water use | 4,524 kgal |
| Gross floor area | 53,910 sq ft |
| Source record | honolulu:04QFJ2114355608:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 20.4 kBtu/ft² | 232 tCO₂e | |
| 2024 | 100 | 21.1 kBtu/ft² | 240 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
- 1226 Alexander 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 Alexander Towers 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 20.4 kBtu/ft² is about 28% below the average of 28.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 53,910 sq ft, it is about 66% below the average floor area of 159,294 sq ft for those buildings. Its 1977 construction date is close to 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 Alexander Towers's energy performance changed over time?
BuildingCensus holds 2 Honolulu disclosures for Alexander Towers, covering report years 2024–2025. Site EUI moved from 21.1 kBtu/ft² (2024) to 20.4 kBtu/ft² (2025), a 3% decrease. Reported emissions went from 240 tCO₂e to 232 tCO₂e over the same span (down 4%).
What does a site EUI of 20.4 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. Alexander Towers's 20.4 kBtu/ft² across 53,910 sq ft works out to about 1.1 billion Btu (322 MWh-equivalent) in 2025. The disclosure also reports 321,997 kWh of electricity and 4,524 thousand gallons of water for the year.
Which law requires Alexander Towers to report its energy use?
Alexander Towers 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:04QFJ2114355608:2025). 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
- Kapiolani Royale AOAO· 53,704 sq ft · EUI 29.5 kBtu/ft²
- Liliuokalani Plaza· 53,534 sq ft · EUI 18.7 kBtu/ft²
- Diamond Head Sands· 52,635 sq ft · EUI 29.4 kBtu/ft²
- Pikake Manor· 51,850 sq ft
- Princess Kealoha· 51,756 sq ft · EUI 21.9 kBtu/ft²
- Punahou Wilder· 51,634 sq ft
- 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 Alexander Towers's energy grade?
Alexander Towers did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 20.4 kBtu/ft².
How much energy does Alexander Towers use?
Its 2025 site energy-use intensity was 20.4 kBtu/ft² across 53,910 sq ft, including 321,997 kWh of electricity.
What are Alexander Towers's carbon emissions?
Alexander Towers reported 232 tCO₂e of greenhouse-gas emissions for 2025.
Where is Alexander Towers?
Alexander Towers is at 1226 Alexander St, Honolulu, in Honolulu, Hawaii.
How big is Alexander Towers and when was it built?
Alexander Towers has 53,910 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1977 as its year built. It is classed as multifamily housing.
Is Alexander Towers 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, “Alexander Towers, Honolulu, Hawaii — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/honolulu/alexander-towers-49d301cc (data as of July 9, 2026).