Queen Emma Gardens
Multifamily Housing in Honolulu, HI · 1515 Nuuanu Ave, Honolulu
At a glance
Queen Emma Gardens is a 100,000-square-foot multifamily housing building at 1515 Nuuanu Ave, Honolulu in Honolulu, Hawaii, built in 1963. In its 2025 Honolulu benchmarking disclosure it reported a site energy-use intensity of 146.7 kBtu/ft² and 2,003 tCO₂e of greenhouse-gas emissions.
Ordinance 22-17 (City & County of Honolulu) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 146.7 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 2,003 tCO₂e |
| GHG intensity | — |
| Electricity | 2,454,292 kWh |
| Natural gas | 62,922 therms |
| Water use | 40,923 kgal |
| Gross floor area | 100,000 sq ft |
| Source record | honolulu:04QFJ1858557435:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 146.7 kBtu/ft² | 2,003 tCO₂e | |
| 2024 | 81 | 140.2 kBtu/ft² | 2,097 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 1515 Nuuanu Ave, 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 Queen Emma Gardens 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 146.7 kBtu/ft² is about 420% above the average of 28.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 100,000 sq ft, it is about 37% below the average floor area of 159,294 sq ft for those buildings. It was built in 1963, 16 years earlier 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 Queen Emma Gardens's energy performance changed over time?
BuildingCensus holds 2 Honolulu disclosures for Queen Emma Gardens, covering report years 2024–2025. Site EUI moved from 140.2 kBtu/ft² (2024) to 146.7 kBtu/ft² (2025), an 5% increase. Reported emissions went from 2,097 tCO₂e to 2,003 tCO₂e over the same span (down 4%).
What does a site EUI of 146.7 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. Queen Emma Gardens's 146.7 kBtu/ft² across 100,000 sq ft works out to about 14.7 billion Btu (4,299 MWh-equivalent) in 2025. The disclosure also reports 2,454,292 kWh of electricity, 62,922 therms of natural gas and 40,923 thousand gallons of water for the year.
Which law requires Queen Emma Gardens to report its energy use?
Queen Emma Gardens 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:04QFJ1858557435:2025). 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
- Village Maluhia· 99,222 sq ft · EUI 31.6 kBtu/ft²
- Country Club Village 6· 99,158 sq ft · EUI 56.9 kBtu/ft²
- Palms Of Kilani· 98,159 sq ft · EUI 45.9 kBtu/ft²
- The Courtyards at Punahou· 97,564 sq ft · EUI 29.5 kBtu/ft²
- Punahou Gardens· 97,430 sq ft · EUI 21.3 kBtu/ft²
- Prospect Tower· 97,245 sq ft · EUI 11.6 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 Queen Emma Gardens's energy grade?
Queen Emma Gardens did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 146.7 kBtu/ft².
How much energy does Queen Emma Gardens use?
Its 2025 site energy-use intensity was 146.7 kBtu/ft² across 100,000 sq ft, including 2,454,292 kWh of electricity and 62,922 therms of natural gas.
What are Queen Emma Gardens's carbon emissions?
Queen Emma Gardens reported 2,003 tCO₂e of greenhouse-gas emissions for 2025.
Where is Queen Emma Gardens?
Queen Emma Gardens is at 1515 Nuuanu Ave, Honolulu, in Honolulu, Hawaii.
How big is Queen Emma Gardens and when was it built?
Queen Emma Gardens has 100,000 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1963 as its year built. It is classed as multifamily housing.
Is Queen Emma Gardens 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).
Working with Honolulu building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Queen Emma Gardens, Honolulu, Hawaii — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/honolulu/queen-emma-gardens-63e4b216 (data as of July 9, 2026).