St Charles Hotel Apts
Multifamily Housing in Seattle, WA · 619 3RD AVE · 98104
At a glance
St Charles Hotel Apts is a 23,338-square-foot multifamily housing building at 619 3RD AVE in Seattle, Washington, built in 1911. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 74.9 kBtu/ft² and 107 tCO₂e of greenhouse-gas emissions.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 74.9 kBtu/ft² |
| Source EUI | 100.2 kBtu/ft² |
| GHG emissions | 107 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 113,982 kWh |
| Natural gas | 19,816 therms |
| Gross floor area | 23,338 sq ft |
| Source record | seattle:19851:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 74.9 kBtu/ft² | 107 tCO₂e | |
| 2024 | — | 50.4 kBtu/ft² | 70 tCO₂e | |
| 2023 | — | 51.6 kBtu/ft² | 71 tCO₂e | |
| 2022 | — | 47.6 kBtu/ft² | 63 tCO₂e | |
| 2021 | — | 79.3 kBtu/ft² | 103 tCO₂e | |
| 2020 | — | 77.8 kBtu/ft² | 98 tCO₂e | |
| 2019 | — | 72.6 kBtu/ft² | 87 tCO₂e | |
| 2018 | — | 80.1 kBtu/ft² | 98 tCO₂e | |
| 2017 | — | 85.1 kBtu/ft² | 106 tCO₂e | |
| 2016 | 62 | +23 | 64.8 kBtu/ft² | 78 tCO₂e |
| 2015 | 39 | 73.9 kBtu/ft² | 88 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
- 619 3RD AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.60318, -122.33206
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
How does St Charles Hotel Apts compare with other multifamily housing buildings in Seattle?
The latest disclosures cover 1,971 multifamily housing buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 74.9 kBtu/ft² is about twice the average of 34.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.4 kgCO₂e/ft² is about 383% above the group average of 0.7 kgCO₂e/ft².
At 23,338 sq ft, it is about 73% below the average floor area of 86,468 sq ft for those buildings. It was built in 1911, 72 years earlier than the group's average year built (1983). 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 St Charles Hotel Apts's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for St Charles Hotel Apts, covering report years 2015–2025. Its ENERGY STAR score went from 39 in 2015 to 62 in 2016 (+23 points). Site EUI moved from 73.9 kBtu/ft² (2015) to 74.9 kBtu/ft² (2025), an 1% increase. Reported emissions went from 88 tCO₂e to 107 tCO₂e over the same span (up 21%).
What does a site EUI of 74.9 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. St Charles Hotel Apts's 74.9 kBtu/ft² across 23,338 sq ft works out to about 1.7 billion Btu (512 MWh-equivalent) in 2025. Its source EUI of 100.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 113,982 kWh of electricity and 19,816 therms of natural gas for the year.
Which law requires St Charles Hotel Apts to report its energy use?
St Charles Hotel Apts 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:19851:2025). 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 multifamily housing buildings in Seattle
- Betula Apartments· 23,292 sq ft · score 95 (A)
- Main Street Place Ii· 23,286 sq ft · EUI 31.0 kBtu/ft²
- Holgate 12· 23,280 sq ft · score 100 (A)
- Silvian Apts· 23,242 sq ft · score 77 (B)
- Ridgemont Condominium· 23,236 sq ft · score 66 (C)
- Alpine Villa Condominium· 23,231 sq ft · score 96 (A)
- Multifamily Housing buildings in Seattle· 1,971 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 St Charles Hotel Apts's energy grade?
St Charles Hotel Apts did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 74.9 kBtu/ft².
How much energy does St Charles Hotel Apts use?
Its 2025 site energy-use intensity was 74.9 kBtu/ft² (100.2 kBtu/ft² source) across 23,338 sq ft, including 113,982 kWh of electricity and 19,816 therms of natural gas.
What are St Charles Hotel Apts's carbon emissions?
St Charles Hotel Apts reported 107 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2025.
Where is St Charles Hotel Apts?
St Charles Hotel Apts is at 619 3RD AVE, in Seattle, Washington 98104. Its coordinates are 47.60318, -122.33206 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is St Charles Hotel Apts and when was it built?
St Charles Hotel Apts has 23,338 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1911 as its year built. It is classed as multifamily housing.
Is St Charles Hotel Apts 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, “St Charles Hotel Apts, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/st-charles-hotel-apts-d186b427 (data as of October 2, 2026).