Fairmont Sonoma Mission Inn And Spa
Hotel in California, CA · 100 Boyes Boulevard, Sonoma · 95476
At a glance
Fairmont Sonoma Mission Inn And Spa is a 121,968-square-foot hotel at 100 Boyes Boulevard, Sonoma in Sonoma, California, built in 1927. In its 2023 California benchmarking disclosure it reported an ENERGY STAR score of 70 out of 100 (grade B), a site energy-use intensity of 72.9 kBtu/ft² and 627 tCO₂e of greenhouse-gas emissions. That score is higher than 32% of the 1,525 scored hotel buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 70 (band B) |
| Site EUI | 72.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 627 tCO₂e |
| GHG intensity | 5.1 kgCO₂e/ft² |
| Electricity | 2,550,691 kWh |
| Natural gas | 1,823 therms |
| Gross floor area | 121,968 sq ft |
| Source record | california:27563940:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 70 | -2 | 72.9 kBtu/ft² | 627 tCO₂e |
| 2022 | 72 | 72.2 kBtu/ft² | 601 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 100 Boyes Boulevard, Sonoma
- City
- California
- State
- California
- ZIP
- 95476
- Coordinates
- 38.31283, -122.48256
Within ~1 km
Nearby benchmarked buildings
No other benchmarked buildings within ~1 km.
See also: most efficient in California · biggest emitters
How does Fairmont Sonoma Mission Inn And Spa compare with other hotel buildings in California?
The latest disclosures cover 1,599 hotel buildings in California, out of 40,029 buildings citywide. Fairmont Sonoma Mission Inn And Spa's ENERGY STAR score of 70 compares with an average of 74 across the 1,525 that report a score; it scores higher than 32% of them and lower than 67%. Its site EUI of 72.9 kBtu/ft² is about 11% above the average of 65.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.1 kgCO₂e/ft² is about 27% above the group average of 4.0 kgCO₂e/ft².
At 121,968 sq ft, it is about 27% below the average floor area of 167,786 sq ft for those buildings. It was built in 1927, 61 years earlier than the group's average year built (1988). 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 Fairmont Sonoma Mission Inn And Spa's energy performance changed over time?
BuildingCensus holds 2 California disclosures for Fairmont Sonoma Mission Inn And Spa, covering report years 2022–2023. Its ENERGY STAR score went from 72 in 2022 to 70 in 2023 (-2 points); its best year on file was 2022, at 72. Site EUI moved from 72.2 kBtu/ft² (2022) to 72.9 kBtu/ft² (2023), an 1% increase. Reported emissions went from 601 tCO₂e to 627 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 70 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 70 means the building performs better than about 70% of its national peers. BuildingCensus bands the score into report-card grades; 70 falls in band B — above median (70–84). It sits 5 points below 75, the threshold for ENERGY STAR certification. In California, 65% of scored buildings are at 75 or above.
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. Fairmont Sonoma Mission Inn And Spa's 72.9 kBtu/ft² across 121,968 sq ft works out to about 8.9 billion Btu (2,606 MWh-equivalent) in 2023. The disclosure also reports 2,550,691 kWh of electricity and 1,823 therms of natural gas for the year.
Which law requires Fairmont Sonoma Mission Inn And Spa to report its energy use?
Fairmont Sonoma Mission Inn And Spa reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record california:27563940:2023). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
More hotel buildings in California
- Radisson Hotel Santa Maria· 121,410 sq ft · score 100 (A)
- Hotel Solamar· 121,255 sq ft · score 10 (D)
- Holiday Inn Dublin· 121,069 sq ft · score 98 (A)
- Embassy Suites By Hilton Arcadia· 120,895 sq ft · score 100 (A)
- Embassy Arcadia-Pasadena Area, Ca· 120,301 sq ft · score 54 (D)
- 1945 East Holt Boulevard - Ab802· 119,917 sq ft · score 98 (A)
- Hotel buildings in California· 1,599 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is Fairmont Sonoma Mission Inn And Spa's energy grade?
Fairmont Sonoma Mission Inn And Spa scores 70 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2023 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Fairmont Sonoma Mission Inn And Spa use?
Its 2023 site energy-use intensity was 72.9 kBtu/ft² across 121,968 sq ft, including 2,550,691 kWh of electricity and 1,823 therms of natural gas.
What are Fairmont Sonoma Mission Inn And Spa's carbon emissions?
Fairmont Sonoma Mission Inn And Spa reported 627 tCO₂e of greenhouse-gas emissions (5.1 kgCO₂e/ft²) for 2023.
Where is Fairmont Sonoma Mission Inn And Spa?
Fairmont Sonoma Mission Inn And Spa is at 100 Boyes Boulevard, Sonoma, in Sonoma, California 95476. Its coordinates are 38.31283, -122.48256 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Fairmont Sonoma Mission Inn And Spa and when was it built?
Fairmont Sonoma Mission Inn And Spa has 121,968 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1927 as its year built. It is classed as hotel.
Is Fairmont Sonoma Mission Inn And Spa covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2023 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Fairmont Sonoma Mission Inn And Spa, Sonoma, California — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/california/fairmont-sonoma-mission-inn-and-spa-a44eacc7 (data as of July 9, 2026).