At a glance
Mayflower Park Hotel is a 88,434-square-foot hotel at 405 OLIVE WAY in Seattle, Washington, built in 1927.
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 1,021,340 kWh |
| Natural gas | 16,927 therms |
| Gross floor area | 88,434 sq ft |
| Source record | seattle:1:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | — | — | |
| 2024 | 59 | -2 | 61.7 kBtu/ft² | 263 tCO₂e |
| 2023 | 61 | -4 | 90.1 kBtu/ft² | 332 tCO₂e |
| 2022 | 65 | -13 | 82.9 kBtu/ft² | 272 tCO₂e |
| 2021 | 78 | -14 | 73.6 kBtu/ft² | 243 tCO₂e |
| 2020 | 92 | +30 | 54.6 kBtu/ft² | 168 tCO₂e |
| 2019 | 62 | +2 | 83.1 kBtu/ft² | 267 tCO₂e |
| 2018 | 60 | -2 | 83.8 kBtu/ft² | 267 tCO₂e |
| 2017 | 62 | +2 | 83.2 kBtu/ft² | 263 tCO₂e |
| 2016 | 60 | -5 | 81.7 kBtu/ft² | 253 tCO₂e |
| 2015 | 65 | 78.9 kBtu/ft² | 253 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 405 OLIVE WAY
- City
- Seattle
- State
- Washington
- ZIP
- 98101
- Coordinates
- 47.61220, -122.33799
Within ~1 km
Nearby benchmarked buildings
- Columbia Centerscore 90
Office · 1,952,220 sq ft
- Seattle Convention Centerscore —
Convention Center · 1,842,925 sq ft
- Two Union Squarescore 96
Office · 1,605,578 sq ft
Office · 1,599,394 sq ft
- Day 1 Tower And Spheres (Amazon)score 93
Office · 1,599,230 sq ft
- Russell Investments Centerscore 92
Office · 1,592,914 sq ft
See also: most efficient in Seattle · biggest emitters
How does Mayflower Park Hotel compare with other hotel buildings in Seattle?
The latest disclosures cover 86 hotel buildings in Seattle, out of 3,871 buildings citywide.
At 88,434 sq ft, it is about half of the average floor area of 165,912 sq ft for those buildings. It was built in 1927, 43 years earlier than the group's average year built (1971). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has Mayflower Park Hotel's energy performance changed over time?
BuildingCensus holds 11 Seattle disclosures for Mayflower Park Hotel, covering report years 2015–2025. Its ENERGY STAR score went from 65 in 2015 to 59 in 2024 (-6 points); its best year on file was 2020, at 92. Site EUI moved from 78.9 kBtu/ft² (2015) to 61.7 kBtu/ft² (2024), a 22% decrease. Reported emissions went from 253 tCO₂e to 263 tCO₂e over the same span (up 4%).
Which law requires Mayflower Park Hotel to report its energy use?
Mayflower Park Hotel 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:1:2025). 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 hotel buildings in Seattle
- Fhcc – Behnke Family House· 84,103 sq ft · score 83 (B)
- CAMLIN WORLDMARK HOTEL· 83,008 sq ft · score 10 (D)
- Silver Cloud Inn University· 81,871 sq ft · score 91 (A)
- Sorrento Hotel· 76,631 sq ft · score 1 (D)
- University Inn· 71,403 sq ft · score 78 (B)
- Inn At The Market· 71,150 sq ft · score 68 (C)
- Hotel buildings in Seattle· 86 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 Mayflower Park Hotel's energy grade?
Mayflower Park Hotel did not report an ENERGY STAR score in its 2025 disclosure.
How much energy does Mayflower Park Hotel use?
No energy-use intensity was reported for 2025.
What are Mayflower Park Hotel's carbon emissions?
No greenhouse-gas emissions figure was reported for 2025.
Where is Mayflower Park Hotel?
Mayflower Park Hotel is at 405 OLIVE WAY, in Seattle, Washington 98101. Its coordinates are 47.61220, -122.33799 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Mayflower Park Hotel and when was it built?
Mayflower Park Hotel has 88,434 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1927 as its year built. It is classed as hotel.
Is Mayflower Park Hotel 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, “Mayflower Park Hotel, Seattle, Washington — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/seattle/mayflower-park-hotel-f9fc1542 (data as of October 2, 2026).