Stonestown Galleria
Commercial in San Francisco, CA · 3251 20TH AVE · 94132
At a glance
Stonestown Galleria is a 440,707-square-foot commercial building at 3251 20TH AVE in San Francisco, California, built in 1988. In its 2025 San Francisco benchmarking disclosure it reported a site energy-use intensity of 61.1 kBtu/ft² and 1,509 tCO₂e of greenhouse-gas emissions.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 61.1 kBtu/ft² |
| Source EUI | 142.0 kBtu/ft² |
| GHG emissions | 1,509 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 5,747,904 kWh |
| Natural gas | 73,127 therms |
| Gross floor area | 440,707 sq ft |
| Source record | sf:7295/038-A:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 61.1 kBtu/ft² | 1,509 tCO₂e | |
| 2024 | — | 58.9 kBtu/ft² | 1,631 tCO₂e | |
| 2023 | — | 57.0 kBtu/ft² | 1,662 tCO₂e | |
| 2022 | — | 61.7 kBtu/ft² | 1,757 tCO₂e | |
| 2021 | — | 59.8 kBtu/ft² | 1,537 tCO₂e | |
| 2020 | — | 48.5 kBtu/ft² | 1,338 tCO₂e | |
| 2019 | — | 76.5 kBtu/ft² | 2,196 tCO₂e | |
| 2018 | — | 78.9 kBtu/ft² | 2,263 tCO₂e | |
| 2017 | — | 76.7 kBtu/ft² | 2,351 tCO₂e | |
| 2016 | — | 77.4 kBtu/ft² | 2,397 tCO₂e | |
| 2015 | — | — | — | |
| 2014 | — | — | — | |
| 2013 | — | — | — | |
| 2012 | — | — | — | |
| 2011 | — | — | — |
Compliance context
SF Environment Code Chapter 20
San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
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
- 3251 20TH AVE
- City
- San Francisco
- State
- California
- ZIP
- 94132
- Coordinates
- 37.72862, -122.47672
Within ~1 km
Nearby benchmarked buildings
College/University · 4,819,013 sq ft
- Park Mercedscore 71
Multifamily Housing · 3,116,841 sq ft
- 2173-Stonestownscore —
Enclosed Mall · 859,450 sq ft
- Stonestown Galleria (Main)score —
Enclosed Mall · 440,707 sq ft
- 300 ARBALLO DRscore —
Mixed Residential · 368,272 sq ft
- Building On Parcel 7308/001score 51
Multifamily Housing · 368,272 sq ft
See also: most efficient in San Francisco · biggest emitters
How does Stonestown Galleria compare with other commercial buildings in San Francisco?
The latest disclosures cover 1,683 commercial buildings in San Francisco, out of 2,509 buildings citywide. Its site EUI of 61.1 kBtu/ft² is about 24% above the average of 49.2 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 3.4 kgCO₂e/ft² is about 27% above the group average of 2.7 kgCO₂e/ft².
At 440,707 sq ft, it is about 310% above the average floor area of 107,408 sq ft for those buildings. It was built in 1988, 47 years later than the group's average year built (1941). Across all 24 jurisdictions BuildingCensus covers, the 2,307 commercial buildings average an ENERGY STAR score of 76 and a site EUI of 51.3 kBtu/ft².
How has Stonestown Galleria's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for Stonestown Galleria, covering report years 2011–2025. Site EUI moved from 77.4 kBtu/ft² (2016) to 61.1 kBtu/ft² (2025), a 21% decrease. Reported emissions went from 2,397 tCO₂e to 1,509 tCO₂e over the same span (down 37%).
What does a site EUI of 61.1 kBtu/ft² mean?
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. Stonestown Galleria's 61.1 kBtu/ft² across 440,707 sq ft works out to about 26.9 billion Btu (7,892 MWh-equivalent) in 2025. Its source EUI of 142.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 5,747,904 kWh of electricity and 73,127 therms of natural gas for the year.
Which law requires Stonestown Galleria to report its energy use?
Stonestown Galleria reports under SF Environment Code Chapter 20, the legal basis of San Francisco's Existing Buildings Energy Performance Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record sf:7295/038-A:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
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Frequently asked questions
What is Stonestown Galleria's energy grade?
Stonestown Galleria did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 61.1 kBtu/ft².
How much energy does Stonestown Galleria use?
Its 2025 site energy-use intensity was 61.1 kBtu/ft² (142.0 kBtu/ft² source) across 440,707 sq ft, including 5,747,904 kWh of electricity and 73,127 therms of natural gas.
What are Stonestown Galleria's carbon emissions?
Stonestown Galleria reported 1,509 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2025.
Where is Stonestown Galleria?
Stonestown Galleria is at 3251 20TH AVE, in San Francisco, California 94132. Its coordinates are 37.72862, -122.47672 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is Stonestown Galleria and when was it built?
Stonestown Galleria has 440,707 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1988 as its year built. It is classed as commercial.
Is Stonestown Galleria covered by SF Environment Code Chapter 20?
Yes — it appears in the 2025 Existing Buildings Energy Performance Ordinance disclosure, which lists the buildings reporting under SF Environment Code Chapter 20.
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About this data
Source: Existing Buildings Energy Performance Ordinance (SF Environment Code Chapter 20), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Stonestown Galleria, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/stonestown-galleria-f0690d30 (data as of October 2, 2026).