5 THOMAS MELLON CIR
Commercial in San Francisco, CA · 94134
At a glance
5 THOMAS MELLON CIR is a 100,393-square-foot commercial building in San Francisco, California, built in 1980. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 5.9 kBtu/ft² and 34 tCO₂e of greenhouse-gas emissions. That score is higher than 90% of the 790 scored commercial buildings in San Francisco.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 5.9 kBtu/ft² |
| Source EUI | 16.6 kBtu/ft² |
| GHG emissions | 34 tCO₂e |
| GHG intensity | 0.3 kgCO₂e/ft² |
| Electricity | 174,583 kWh |
| Natural gas | 0 therms |
| Gross floor area | 100,393 sq ft |
| Source record | sf:4991/075:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | 5.9 kBtu/ft² | 34 tCO₂e | |
| 2024 | — | — | — | |
| 2018 | — | — | — | |
| 2017 | — | — | — | |
| 2016 | — | — | — | |
| 2015 | 91 | -7 | 38.0 kBtu/ft² | 270 tCO₂e |
| 2014 | 98 | 31.9 kBtu/ft² | 231 tCO₂e | |
| 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.
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Location
- Address
- 5 THOMAS MELLON CIR
- City
- San Francisco
- State
- California
- ZIP
- 94134
- Coordinates
- 37.70999, -122.39379
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does 5 THOMAS MELLON CIR 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. 5 THOMAS MELLON CIR's ENERGY STAR score of 100 compares with an average of 78 across the 790 that report a score; it scores higher than 90% of them. Its site EUI of 5.9 kBtu/ft² is about 88% below the average of 49.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.3 kgCO₂e/ft² is about 87% below the group average of 2.7 kgCO₂e/ft².
At 100,393 sq ft, it is roughly in line with the average floor area of 107,408 sq ft for those buildings. It was built in 1980, 39 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 5 THOMAS MELLON CIR's energy performance changed over time?
BuildingCensus holds 10 San Francisco disclosures for 5 THOMAS MELLON CIR, covering report years 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2024, 2025. Its ENERGY STAR score went from 98 in 2014 to 100 in 2025 (+2 points). Site EUI moved from 31.9 kBtu/ft² (2014) to 5.9 kBtu/ft² (2025), a 82% decrease. Reported emissions went from 231 tCO₂e to 34 tCO₂e over the same span (down 85%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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 San Francisco, 73% 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. 5 THOMAS MELLON CIR's 5.9 kBtu/ft² across 100,393 sq ft works out to about 0.6 billion Btu (174 MWh-equivalent) in 2025. Its source EUI of 16.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 174,583 kWh of electricity and 0 therms of natural gas for the year.
Which law requires 5 THOMAS MELLON CIR to report its energy use?
5 THOMAS MELLON CIR 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:4991/075:2025). 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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- Commercial buildings in San Francisco· 1,683 benchmarked
- All San Francisco benchmarked buildings· SF Environment Code Chapter 20
- Most efficient large buildings in San Francisco
- Least efficient large buildings in San Francisco
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Frequently asked questions
What is 5 THOMAS MELLON CIR's energy grade?
5 THOMAS MELLON CIR scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 5 THOMAS MELLON CIR use?
Its 2025 site energy-use intensity was 5.9 kBtu/ft² (16.6 kBtu/ft² source) across 100,393 sq ft, including 174,583 kWh of electricity and 0 therms of natural gas.
What are 5 THOMAS MELLON CIR's carbon emissions?
5 THOMAS MELLON CIR reported 34 tCO₂e of greenhouse-gas emissions (0.3 kgCO₂e/ft²) for 2025.
Where is 5 THOMAS MELLON CIR?
5 THOMAS MELLON CIR is in San Francisco, California 94134. Its coordinates are 37.70999, -122.39379 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 5 THOMAS MELLON CIR and when was it built?
5 THOMAS MELLON CIR has 100,393 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1980 as its year built. It is classed as commercial.
Is 5 THOMAS MELLON CIR 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, “5 THOMAS MELLON CIR, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/5-thomas-mellon-cir-0a77b19e (data as of October 2, 2026).