Arnett Hall Dormitory
College/University in Seattle, WA · 3309 6TH AVE W · 98119
At a glance
Arnett Hall Dormitory is a 69,801-square-foot college/university building at 3309 6TH AVE W in Seattle, Washington, built in 2015. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 31.3 kBtu/ft² and 29 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 31.3 kBtu/ft² |
| Source EUI | 71.1 kBtu/ft² |
| GHG emissions | 29 tCO₂e |
| GHG intensity | 0.6 kgCO₂e/ft² |
| Electricity | 300,217 kWh |
| Natural gas | 4,440 therms |
| Gross floor area | 69,801 sq ft |
| Source record | seattle:49986:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 31.3 kBtu/ft² | 29 tCO₂e | |
| 2024 | 94 | +1 | 33.3 kBtu/ft² | 31 tCO₂e |
| 2023 | 93 | -2 | 34.7 kBtu/ft² | 33 tCO₂e |
| 2022 | 95 | -1 | 33.3 kBtu/ft² | 33 tCO₂e |
| 2021 | 96 | +1 | 31.0 kBtu/ft² | 31 tCO₂e |
| 2020 | 95 | +2 | 31.9 kBtu/ft² | 31 tCO₂e |
| 2019 | 93 | -1 | 35.4 kBtu/ft² | 38 tCO₂e |
| 2018 | 94 | ±0 | 33.3 kBtu/ft² | 35 tCO₂e |
| 2017 | 94 | ±0 | 34.6 kBtu/ft² | 37 tCO₂e |
| 2016 | 94 | 34.2 kBtu/ft² | 42 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 3309 6TH AVE W
- City
- Seattle
- State
- Washington
- ZIP
- 98119
- Coordinates
- 47.65021, -122.36504
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does Arnett Hall Dormitory compare with other college/university buildings in Seattle?
The latest disclosures cover 26 college/university buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 31.3 kBtu/ft² is about half of the average of 57.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.6 kgCO₂e/ft² is about 56% below the group average of 1.4 kgCO₂e/ft².
At 69,801 sq ft, it is about 91% below the average floor area of 803,209 sq ft for those buildings. It was built in 2015, 47 years later than the group's average year built (1968). Across all 24 jurisdictions BuildingCensus covers, the 2,113 college/university buildings average an ENERGY STAR score of 68 and a site EUI of 98.7 kBtu/ft².
How has Arnett Hall Dormitory's energy performance changed over time?
BuildingCensus holds 10 Seattle disclosures for Arnett Hall Dormitory, covering report years 2016–2025. Its ENERGY STAR score was 94 in both 2016 and 2024. Site EUI moved from 34.2 kBtu/ft² (2016) to 31.3 kBtu/ft² (2025), a 8% decrease. Reported emissions went from 42 tCO₂e to 29 tCO₂e over the same span (down 31%).
What does a site EUI of 31.3 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. Arnett Hall Dormitory's 31.3 kBtu/ft² across 69,801 sq ft works out to about 2.2 billion Btu (640 MWh-equivalent) in 2025. Its source EUI of 71.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 300,217 kWh of electricity and 4,440 therms of natural gas for the year.
Which law requires Arnett Hall Dormitory to report its energy use?
Arnett Hall Dormitory reports under the Seattle Energy Benchmarking Ordinance (SMC 22.920), the legal basis of Seattle's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record seattle:49986:2025). Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
More college/university buildings in Seattle
- Seattle Central College - Wood Construction (Stand Alone Bldg)· 61,050 sq ft · EUI 47.5 kBtu/ft²
- South Seattle College - Cascade Hall· 57,333 sq ft · EUI 37.3 kBtu/ft²
- FINISHING TRADES INSTITUTE NW (ALLIED TRADES DUWAMISH)· 54,035 sq ft · EUI 36.1 kBtu/ft²
- Seattle Pacific University - Otto Miller Hall· 53,016 sq ft · EUI 63.6 kBtu/ft²
- CORNISH (Virginia-Terry)- DEMOLISHED INACTIVE· 28,923 sq ft · EUI 16.7 kBtu/ft²
- Beebe Building· 28,800 sq ft
- College/University buildings in Seattle· 26 benchmarked
- All Seattle benchmarked buildings· Seattle Energy Benchmarking Ordinance (SMC 22.920)
- Most efficient large buildings in Seattle
- Least efficient large buildings in Seattle
- Biggest emitters in Seattle
Frequently asked questions
What is Arnett Hall Dormitory's energy grade?
Arnett Hall Dormitory did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 31.3 kBtu/ft².
How much energy does Arnett Hall Dormitory use?
Its 2025 site energy-use intensity was 31.3 kBtu/ft² (71.1 kBtu/ft² source) across 69,801 sq ft, including 300,217 kWh of electricity and 4,440 therms of natural gas.
What are Arnett Hall Dormitory's carbon emissions?
Arnett Hall Dormitory reported 29 tCO₂e of greenhouse-gas emissions (0.6 kgCO₂e/ft²) for 2025.
Where is Arnett Hall Dormitory?
Arnett Hall Dormitory is at 3309 6TH AVE W, in Seattle, Washington 98119. Its coordinates are 47.65021, -122.36504 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Arnett Hall Dormitory and when was it built?
Arnett Hall Dormitory has 69,801 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2015 as its year built. It is classed as college/university.
Is Arnett Hall Dormitory covered by the Seattle Energy Benchmarking Ordinance (SMC 22.920)?
Yes — it appears in the 2025 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Seattle Energy Benchmarking Ordinance (SMC 22.920).
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About this data
Source: Building Energy Benchmarking (Seattle Energy Benchmarking Ordinance (SMC 22.920)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Arnett Hall Dormitory, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/arnett-hall-dormitory-0c317f01 (data as of October 2, 2026).