81161200 - Mosso (900 Folsom)
Multifamily Housing in California, CA · 270 5Th Street, San Francisco · 94103
At a glance
81161200 - Mosso (900 Folsom) is a 323,402-square-foot multifamily housing building at 270 5Th Street, San Francisco in San Francisco, California, built in 2000. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 97 out of 100 (grade A), a site energy-use intensity of 31.4 kBtu/ft² and 599 tCO₂e of greenhouse-gas emissions. That score is higher than 63% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 97 (band A) |
| Site EUI | 31.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 599 tCO₂e |
| GHG intensity | 1.9 kgCO₂e/ft² |
| Electricity | 1,223,648 kWh |
| Natural gas | 60,566 therms |
| Gross floor area | 323,402 sq ft |
| Source record | california:14824196:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 97 | -3 | 31.4 kBtu/ft² | 599 tCO₂e |
| 2023 | 100 | +13 | 27.3 kBtu/ft² | 848 tCO₂e |
| 2022 | 87 | -2 | 88.4 kBtu/ft² | 915 tCO₂e |
| 2021 | 89 | -11 | 83.7 kBtu/ft² | 822 tCO₂e |
| 2020 | 100 | 36.2 kBtu/ft² | 713 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 270 5Th Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94103
- Coordinates
- 37.78048, -122.40394
Within ~1 km
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How does 81161200 - Mosso (900 Folsom) compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. 81161200 - Mosso (900 Folsom)'s ENERGY STAR score of 97 compares with an average of 82 across the 9,612 that report a score; it scores higher than 63% of them and lower than 34%. Its site EUI of 31.4 kBtu/ft² is roughly in line with the average of 34.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.9 kgCO₂e/ft² is about 12% below the group average of 2.1 kgCO₂e/ft².
At 323,402 sq ft, it is about twice the average floor area of 150,919 sq ft for those buildings. It was built in 2000, 12 years later than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 81161200 - Mosso (900 Folsom)'s energy performance changed over time?
BuildingCensus holds 5 California disclosures for 81161200 - Mosso (900 Folsom), covering report years 2020–2024. Its ENERGY STAR score went from 100 in 2020 to 97 in 2024 (-3 points); its best year on file was 2020, at 100. Site EUI moved from 36.2 kBtu/ft² (2020) to 31.4 kBtu/ft² (2024), a 13% decrease. Reported emissions went from 713 tCO₂e to 599 tCO₂e over the same span (down 16%).
What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 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. 81161200 - Mosso (900 Folsom)'s 31.4 kBtu/ft² across 323,402 sq ft works out to about 10.2 billion Btu (2,976 MWh-equivalent) in 2024. The disclosure also reports 1,223,648 kWh of electricity and 60,566 therms of natural gas for the year.
Which law requires 81161200 - Mosso (900 Folsom) to report its energy use?
81161200 - Mosso (900 Folsom) 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:14824196:2024). 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.
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- Multifamily Housing buildings in California· 10,630 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 81161200 - Mosso (900 Folsom)'s energy grade?
81161200 - Mosso (900 Folsom) scores 97 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 81161200 - Mosso (900 Folsom) use?
Its 2024 site energy-use intensity was 31.4 kBtu/ft² across 323,402 sq ft, including 1,223,648 kWh of electricity and 60,566 therms of natural gas.
What are 81161200 - Mosso (900 Folsom)'s carbon emissions?
81161200 - Mosso (900 Folsom) reported 599 tCO₂e of greenhouse-gas emissions (1.9 kgCO₂e/ft²) for 2024.
Where is 81161200 - Mosso (900 Folsom)?
81161200 - Mosso (900 Folsom) is at 270 5Th Street, San Francisco, in San Francisco, California 94103. Its coordinates are 37.78048, -122.40394 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 81161200 - Mosso (900 Folsom) and when was it built?
81161200 - Mosso (900 Folsom) has 323,402 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2000 as its year built. It is classed as multifamily housing.
Is 81161200 - Mosso (900 Folsom) 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, “81161200 - Mosso (900 Folsom), San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/81161200-mosso-900-folsom-3ac9a0f4 (data as of July 9, 2026).