A0000024 - Spero_Sf_Serentitynow
Hotel in California, CA · 405 Taylor Street, San Francisco · 94102
At a glance
A0000024 - Spero_Sf_Serentitynow is a 110,000-square-foot hotel at 405 Taylor Street, San Francisco in San Francisco, California, built in 1926. In its 2021 California benchmarking disclosure it reported an ENERGY STAR score of 80 out of 100 (grade B), a site energy-use intensity of 46.6 kBtu/ft² and 341 tCO₂e of greenhouse-gas emissions. That score is higher than 44% of the 1,525 scored hotel buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2021
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 80 (band B) |
| Site EUI | 46.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 341 tCO₂e |
| GHG intensity | 3.1 kgCO₂e/ft² |
| Electricity | 1,306,080 kWh |
| Natural gas | 6,729 therms |
| Gross floor area | 110,000 sq ft |
| Source record | california:10363084:2021 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2021latest | 80 | -8 | 46.6 kBtu/ft² | 341 tCO₂e |
| 2020 | 88 | +17 | 41.0 kBtu/ft² | 292 tCO₂e |
| 2019 | 71 | 55.4 kBtu/ft² | 407 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
- 405 Taylor Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94102
- Coordinates
- 37.78630, -122.41139
Within ~1 km
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See also: most efficient in California · biggest emitters
How does A0000024 - Spero_Sf_Serentitynow compare with other hotel buildings in California?
The latest disclosures cover 1,599 hotel buildings in California, out of 40,029 buildings citywide. A0000024 - Spero_Sf_Serentitynow's ENERGY STAR score of 80 compares with an average of 74 across the 1,525 that report a score; it scores higher than 44% of them and lower than 54%. Its site EUI of 46.6 kBtu/ft² is about 29% below 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 3.1 kgCO₂e/ft² is about 22% below the group average of 4.0 kgCO₂e/ft².
At 110,000 sq ft, it is about 34% below the average floor area of 167,786 sq ft for those buildings. It was built in 1926, 62 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 A0000024 - Spero_Sf_Serentitynow's energy performance changed over time?
BuildingCensus holds 3 California disclosures for A0000024 - Spero_Sf_Serentitynow, covering report years 2019–2021. Its ENERGY STAR score went from 71 in 2019 to 80 in 2021 (+9 points); its best year on file was 2020, at 88. Site EUI moved from 55.4 kBtu/ft² (2019) to 46.6 kBtu/ft² (2021), a 16% decrease. Reported emissions went from 407 tCO₂e to 341 tCO₂e over the same span (down 16%).
What does an ENERGY STAR score of 80 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 80 means the building performs better than about 80% of its national peers. BuildingCensus bands the score into report-card grades; 80 falls in band B — above median (70–84). 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. A0000024 - Spero_Sf_Serentitynow's 46.6 kBtu/ft² across 110,000 sq ft works out to about 5.1 billion Btu (1,502 MWh-equivalent) in 2021. The disclosure also reports 1,306,080 kWh of electricity and 6,729 therms of natural gas for the year.
Which law requires A0000024 - Spero_Sf_Serentitynow to report its energy use?
A0000024 - Spero_Sf_Serentitynow 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 2021 disclosure (source record california:10363084:2021). 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
- Homewood Suites San Francisco Airport N· 109,883 sq ft · score 100 (A)
- Holiday Inn Ontario Airport· 109,864 sq ft · score 96 (A)
- Redwood City - Courtyard· 109,734 sq ft · score 76 (B)
- 1105 - Sonesta Es Suites Torrance Redondo Beach 19901 Prairie Ave. - Svc· 109,728 sq ft · score 57 (C)
- Galleria Park Hotel· 109,673 sq ft · score 100 (A)
- Hyatt Place San Jose Airport· 109,395 sq ft · score 99 (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 A0000024 - Spero_Sf_Serentitynow's energy grade?
A0000024 - Spero_Sf_Serentitynow scores 80 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2021 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does A0000024 - Spero_Sf_Serentitynow use?
Its 2021 site energy-use intensity was 46.6 kBtu/ft² across 110,000 sq ft, including 1,306,080 kWh of electricity and 6,729 therms of natural gas.
What are A0000024 - Spero_Sf_Serentitynow's carbon emissions?
A0000024 - Spero_Sf_Serentitynow reported 341 tCO₂e of greenhouse-gas emissions (3.1 kgCO₂e/ft²) for 2021.
Where is A0000024 - Spero_Sf_Serentitynow?
A0000024 - Spero_Sf_Serentitynow is at 405 Taylor Street, San Francisco, in San Francisco, California 94102. Its coordinates are 37.78630, -122.41139 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is A0000024 - Spero_Sf_Serentitynow and when was it built?
A0000024 - Spero_Sf_Serentitynow has 110,000 sq ft of gross floor area, as reported in its 2021 disclosure. The disclosure lists 1926 as its year built. It is classed as hotel.
Is A0000024 - Spero_Sf_Serentitynow covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2021 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, “A0000024 - Spero_Sf_Serentitynow, San Francisco, California — 2021 benchmarking disclosure”, https://buildingcensus.com/buildings/california/a0000024-spero-sf-serentitynow-4ca406c7 (data as of July 9, 2026).