Soma Square Apartments - 29868
Multifamily Housing in California, CA · 351 3Rd Street, San Francisco · 94107
At a glance
Soma Square Apartments - 29868 is a 374,768-square-foot multifamily housing building at 351 3Rd Street, San Francisco in San Francisco, California, built in 1986. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 92 out of 100 (grade A), a site energy-use intensity of 32.7 kBtu/ft² and 741 tCO₂e of greenhouse-gas emissions. That score is higher than 51% 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 | 92 (band A) |
| Site EUI | 32.7 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 741 tCO₂e |
| GHG intensity | 2.0 kgCO₂e/ft² |
| Electricity | 1,858,653 kWh |
| Natural gas | 60,286 therms |
| Gross floor area | 374,768 sq ft |
| Source record | california:6799783:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 92 | +8 | 32.7 kBtu/ft² | 741 tCO₂e |
| 2023 | 84 | -7 | 37.5 kBtu/ft² | 758 tCO₂e |
| 2022 | 91 | +8 | 33.5 kBtu/ft² | 777 tCO₂e |
| 2021 | 83 | -3 | 35.5 kBtu/ft² | 742 tCO₂e |
| 2020 | 86 | +16 | 34.1 kBtu/ft² | 744 tCO₂e |
| 2019 | 70 | 41.4 kBtu/ft² | 945 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
- 351 3Rd Street, San Francisco
- City
- California
- State
- California
- ZIP
- 94107
- Coordinates
- 37.78325, -122.39786
Within ~1 km
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How does Soma Square Apartments - 29868 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. Soma Square Apartments - 29868's ENERGY STAR score of 92 compares with an average of 82 across the 9,612 that report a score; it scores higher than 51% of them and lower than 47%. Its site EUI of 32.7 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 2.0 kgCO₂e/ft² is roughly in line with the group average of 2.1 kgCO₂e/ft².
At 374,768 sq ft, it is about 148% above the average floor area of 150,919 sq ft for those buildings. Its 1986 construction date is close to 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 Soma Square Apartments - 29868's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Soma Square Apartments - 29868, covering report years 2019–2024. Its ENERGY STAR score went from 70 in 2019 to 92 in 2024 (+22 points). Site EUI moved from 41.4 kBtu/ft² (2019) to 32.7 kBtu/ft² (2024), a 21% decrease. Reported emissions went from 945 tCO₂e to 741 tCO₂e over the same span (down 22%).
What does an ENERGY STAR score of 92 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 92 means the building performs better than about 92% of its national peers. BuildingCensus bands the score into report-card grades; 92 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. Soma Square Apartments - 29868's 32.7 kBtu/ft² across 374,768 sq ft works out to about 12.3 billion Btu (3,592 MWh-equivalent) in 2024. The disclosure also reports 1,858,653 kWh of electricity and 60,286 therms of natural gas for the year.
Which law requires Soma Square Apartments - 29868 to report its energy use?
Soma Square Apartments - 29868 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:6799783:2024). 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 multifamily housing buildings in California
- Ca029_Avalon On The Alameda (Vc41)· 374,703 sq ft · score 82 (B)
- Arbor Ridge 1 - Blvd· 374,150 sq ft · score 100 (A)
- Country Hills (Nc59)· 373,964 sq ft · score 93 (A)
- Montevista Apartments· 373,595 sq ft · score 91 (A)
- Waterfield Square (Wr53)· 373,587 sq ft · score 84 (B)
- Wayfarer· 373,469 sq ft · score 52 (D)
- 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 Soma Square Apartments - 29868's energy grade?
Soma Square Apartments - 29868 scores 92 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 Soma Square Apartments - 29868 use?
Its 2024 site energy-use intensity was 32.7 kBtu/ft² across 374,768 sq ft, including 1,858,653 kWh of electricity and 60,286 therms of natural gas.
What are Soma Square Apartments - 29868's carbon emissions?
Soma Square Apartments - 29868 reported 741 tCO₂e of greenhouse-gas emissions (2.0 kgCO₂e/ft²) for 2024.
Where is Soma Square Apartments - 29868?
Soma Square Apartments - 29868 is at 351 3Rd Street, San Francisco, in San Francisco, California 94107. Its coordinates are 37.78325, -122.39786 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Soma Square Apartments - 29868 and when was it built?
Soma Square Apartments - 29868 has 374,768 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1986 as its year built. It is classed as multifamily housing.
Is Soma Square Apartments - 29868 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, “Soma Square Apartments - 29868, San Francisco, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/soma-square-apartments-29868-baceae6f (data as of July 9, 2026).