At a glance
Cadillac Hotel/Historical Society is a 26,000-square-foot office building at 319 2ND AVE S in Seattle, Washington, built in 1966. In its 2025 Seattle benchmarking disclosure it reported a site energy-use intensity of 58.3 kBtu/ft².
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 58.3 kBtu/ft² |
| Source EUI | 117.0 kBtu/ft² |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 245,416 kWh |
| Natural gas | 6,919 therms |
| Gross floor area | 26,000 sq ft |
| Source record | seattle:26600:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 58.3 kBtu/ft² | — | |
| 2024 | — | 8.6 kBtu/ft² | 11 tCO₂e | |
| 2023 | — | 35.0 kBtu/ft² | 20 tCO₂e | |
| 2022 | — | — | 4 tCO₂e | |
| 2021 | — | 39.6 kBtu/ft² | 26 tCO₂e | |
| 2020 | — | 38.4 kBtu/ft² | 23 tCO₂e | |
| 2019 | — | 50.5 kBtu/ft² | 36 tCO₂e | |
| 2018 | — | 45.1 kBtu/ft² | 26 tCO₂e | |
| 2017 | — | 44.9 kBtu/ft² | 24 tCO₂e | |
| 2016 | — | 40.9 kBtu/ft² | 18 tCO₂e | |
| 2015 | — | 64.5 kBtu/ft² | 53 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
- 319 2ND AVE S
- City
- Seattle
- State
- Washington
- ZIP
- 98104
- Coordinates
- 47.59938, -122.33197
Within ~1 km
Nearby benchmarked buildings
- Columbia Centerscore 90
Office · 1,952,220 sq ft
- Centurylink Field-Stadiumscore —
Stadium (Open) · 1,913,640 sq ft
Office · 1,413,575 sq ft
- Seattle Municipal Towerscore 86
Office · 1,354,987 sq ft
- 999 Third Avescore 88
Office · 1,323,055 sq ft
- Harbor Steps Ne Sitescore 81
Multifamily Housing · 1,256,335 sq ft
See also: most efficient in Seattle · biggest emitters
How does Cadillac Hotel/Historical Society compare with other office buildings in Seattle?
The latest disclosures cover 497 office buildings in Seattle, out of 3,871 buildings citywide. Its site EUI of 58.3 kBtu/ft² is about 30% above the average of 44.8 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 26,000 sq ft, it is about 87% below the average floor area of 196,452 sq ft for those buildings. Its 1966 construction date is close to the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Cadillac Hotel/Historical Society's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Cadillac Hotel/Historical Society, covering report years 2015–2025. Site EUI moved from 64.5 kBtu/ft² (2015) to 58.3 kBtu/ft² (2025), a 10% decrease. Reported emissions went from 53 tCO₂e to 11 tCO₂e over the same span (down 79%).
What does a site EUI of 58.3 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. Cadillac Hotel/Historical Society's 58.3 kBtu/ft² across 26,000 sq ft works out to about 1.5 billion Btu (444 MWh-equivalent) in 2025. Its source EUI of 117.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 245,416 kWh of electricity and 6,919 therms of natural gas for the year.
Which law requires Cadillac Hotel/Historical Society to report its energy use?
Cadillac Hotel/Historical Society 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:26600:2025). 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 office buildings in Seattle
- Belltown Center· 25,920 sq ft · score 70 (B)
- 2300 EASTLAKE· 25,912 sq ft · EUI 40.9 kBtu/ft²
- Building O, 655 S ORCAS ST· 25,872 sq ft · EUI 38.2 kBtu/ft²
- Building P, 5700 6TH AVE S· 25,872 sq ft · score 58 (C)
- Canal Building· 25,859 sq ft · score 76 (B)
- Jewish Family Service· 25,834 sq ft
- Office buildings in Seattle· 497 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 Cadillac Hotel/Historical Society's energy grade?
Cadillac Hotel/Historical Society did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 58.3 kBtu/ft².
How much energy does Cadillac Hotel/Historical Society use?
Its 2025 site energy-use intensity was 58.3 kBtu/ft² (117.0 kBtu/ft² source) across 26,000 sq ft, including 245,416 kWh of electricity and 6,919 therms of natural gas.
What are Cadillac Hotel/Historical Society's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Cadillac Hotel/Historical Society?
Cadillac Hotel/Historical Society is at 319 2ND AVE S, in Seattle, Washington 98104. Its coordinates are 47.59938, -122.33197 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Cadillac Hotel/Historical Society and when was it built?
Cadillac Hotel/Historical Society has 26,000 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1966 as its year built. It is classed as office.
Is Cadillac Hotel/Historical Society 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, “Cadillac Hotel/Historical Society, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/cadillac-hotel-historical-society-f7ae37ca (data as of October 2, 2026).