Ayres Hotel Mission Spa
Hotel in California, CA · 28951 Los Alisos Blvd, Mission Viejo · 92692
At a glance
Ayres Hotel Mission Spa is a 64,128-square-foot hotel at 28951 Los Alisos Blvd, Mission Viejo in Mission Viejo, California, built in 2009. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 93 out of 100 (grade A), a site energy-use intensity of 61.1 kBtu/ft² and 223 tCO₂e of greenhouse-gas emissions. That score is higher than 71% of the 1,525 scored hotel buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 93 (band A) |
| Site EUI | 61.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 223 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 499,018 kWh |
| Natural gas | 20,728 therms |
| Gross floor area | 64,128 sq ft |
| Source record | california:6844903:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 93 | +2 | 61.1 kBtu/ft² | 223 tCO₂e |
| 2023 | 91 | -4 | 58.1 kBtu/ft² | 230 tCO₂e |
| 2022 | 95 | -2 | 48.9 kBtu/ft² | 198 tCO₂e |
| 2020 | 97 | +3 | 44.8 kBtu/ft² | 170 tCO₂e |
| 2019 | 94 | -1 | 54.1 kBtu/ft² | 213 tCO₂e |
| 2018 | 95 | 54.1 kBtu/ft² | 214 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
- 28951 Los Alisos Blvd, Mission Viejo
- City
- California
- State
- California
- ZIP
- 92692
- Coordinates
- 33.65432, -117.62680
Within ~1 km
Nearby benchmarked buildings
- Los Alisos At Mission Viejoscore 50
Multifamily Housing · 332,299 sq ft
- Skyview - 29178score 88
Multifamily Housing · 267,393 sq ft
Strip Mall · 94,505 sq ft
- Ayres Suites Mission Viejoscore 83
Hotel · 69,012 sq ft
See also: most efficient in California · biggest emitters
How does Ayres Hotel Mission Spa compare with other hotel buildings in California?
The latest disclosures cover 1,599 hotel buildings in California, out of 40,029 buildings citywide. Ayres Hotel Mission Spa's ENERGY STAR score of 93 compares with an average of 74 across the 1,525 that report a score; it scores higher than 71% of them and lower than 27%. Its site EUI of 61.1 kBtu/ft² is roughly in line with the average of 65.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.5 kgCO₂e/ft² is about 13% below the group average of 4.0 kgCO₂e/ft².
At 64,128 sq ft, it is about 62% below the average floor area of 167,786 sq ft for those buildings. It was built in 2009, 21 years later 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 Ayres Hotel Mission Spa's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Ayres Hotel Mission Spa, covering report years 2018, 2019, 2020, 2022, 2023, 2024. Its ENERGY STAR score went from 95 in 2018 to 93 in 2024 (-2 points); its best year on file was 2020, at 97. Site EUI moved from 54.1 kBtu/ft² (2018) to 61.1 kBtu/ft² (2024), an 13% increase. Reported emissions went from 214 tCO₂e to 223 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 93 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 93 means the building performs better than about 93% of its national peers. BuildingCensus bands the score into report-card grades; 93 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. Ayres Hotel Mission Spa's 61.1 kBtu/ft² across 64,128 sq ft works out to about 3.9 billion Btu (1,148 MWh-equivalent) in 2024. The disclosure also reports 499,018 kWh of electricity and 20,728 therms of natural gas for the year.
Which law requires Ayres Hotel Mission Spa to report its energy use?
Ayres Hotel Mission 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 2024 disclosure (source record california:6844903:2024). 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
- 0625-Stockton· 64,040 sq ft · score 79 (B)
- Hilton Garden Inn Bakersfield· 63,978 sq ft · score 85 (A)
- Bakersfield Ca Hgi· 63,978 sq ft · score 64 (C)
- Hilton Garden Inn Bakersfield· 63,978 sq ft · score 91 (A)
- Building (Hotel) - Airport Century Inn Ltd· 63,595 sq ft · score 53 (D)
- 57415-Oakrs-San Ramon Residence Inn· 63,492 sq ft · score 73 (B)
- 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 Ayres Hotel Mission Spa's energy grade?
Ayres Hotel Mission Spa scores 93 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Ayres Hotel Mission Spa use?
Its 2024 site energy-use intensity was 61.1 kBtu/ft² across 64,128 sq ft, including 499,018 kWh of electricity and 20,728 therms of natural gas.
What are Ayres Hotel Mission Spa's carbon emissions?
Ayres Hotel Mission Spa reported 223 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2024.
Where is Ayres Hotel Mission Spa?
Ayres Hotel Mission Spa is at 28951 Los Alisos Blvd, Mission Viejo, in Mission Viejo, California 92692. Its coordinates are 33.65432, -117.62680 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Ayres Hotel Mission Spa and when was it built?
Ayres Hotel Mission Spa has 64,128 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2009 as its year built. It is classed as hotel.
Is Ayres Hotel Mission Spa covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 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, “Ayres Hotel Mission Spa, Mission Viejo, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/ayres-hotel-mission-spa-c6b19a7b (data as of July 9, 2026).