400 POST ST
Commercial in San Francisco, CA · 94102
At a glance
400 POST ST is a 61,807-square-foot commercial building in San Francisco, California, built in 1909. In its 2025 San Francisco benchmarking disclosure it reported a site energy-use intensity of 65.9 kBtu/ft² and 224 tCO₂e of greenhouse-gas emissions.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 65.9 kBtu/ft² |
| Source EUI | 123.0 kBtu/ft² |
| GHG emissions | 224 tCO₂e |
| GHG intensity | 3.6 kgCO₂e/ft² |
| Electricity | 556,655 kWh |
| Natural gas | 21,761 therms |
| Gross floor area | 61,807 sq ft |
| Source record | sf:0296/006:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 65.9 kBtu/ft² | 224 tCO₂e | |
| 2024 | — | 3.4 kBtu/ft² | 13 tCO₂e | |
| 2023 | — | 69.7 kBtu/ft² | 271 tCO₂e | |
| 2022 | — | — | — | |
| 2021 | 2 | 150.9 kBtu/ft² | 543 tCO₂e | |
| 2020 | — | 140.7 kBtu/ft² | 508 tCO₂e | |
| 2019 | 1 | ±0 | 151.3 kBtu/ft² | 581 tCO₂e |
| 2018 | 1 | -1 | 146.0 kBtu/ft² | 548 tCO₂e |
| 2017 | 2 | -6 | 140.6 kBtu/ft² | 548 tCO₂e |
| 2016 | 8 | 149.1 kBtu/ft² | 653 tCO₂e | |
| 2015 | — | 144.2 kBtu/ft² | 616 tCO₂e | |
| 2014 | — | 144.8 kBtu/ft² | 617 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
- 400 POST ST
- City
- San Francisco
- State
- California
- ZIP
- 94102
- Coordinates
- 37.78849, -122.40883
Within ~1 km
Nearby benchmarked buildings
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- 555 California Streetscore 76
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See also: most efficient in San Francisco · biggest emitters
How does 400 POST ST 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 65.9 kBtu/ft² is about 34% 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 3.6 kgCO₂e/ft² is about 34% above the group average of 2.7 kgCO₂e/ft².
At 61,807 sq ft, it is about 42% below the average floor area of 107,408 sq ft for those buildings. It was built in 1909, 32 years earlier 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 400 POST ST's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for 400 POST ST, covering report years 2011–2025. Its ENERGY STAR score went from 8 in 2016 to 2 in 2021 (-6 points); its best year on file was 2016, at 8. Site EUI moved from 144.8 kBtu/ft² (2014) to 65.9 kBtu/ft² (2025), a 54% decrease. Reported emissions went from 617 tCO₂e to 224 tCO₂e over the same span (down 64%).
What does a site EUI of 65.9 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. 400 POST ST's 65.9 kBtu/ft² across 61,807 sq ft works out to about 4.1 billion Btu (1,194 MWh-equivalent) in 2025. Its source EUI of 123.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 556,655 kWh of electricity and 21,761 therms of natural gas for the year.
Which law requires 400 POST ST to report its energy use?
400 POST ST 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:0296/006:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
More commercial buildings in San Francisco
- Aida Hotel· 61,674 sq ft · score 100 (A)
- 340 PINE ST· 61,632 sq ft
- 808 BRANNAN ST· 61,455 sq ft · EUI 2.2 kBtu/ft²
- 599 Skyline Blvd· 61,330 sq ft · EUI 235.8 kBtu/ft²
- 550 TOWNSEND ST· 61,312 sq ft
- 625 Monterey Blvd· 61,242 sq ft · score 64 (C)
- 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
- Biggest emitters in San Francisco
Frequently asked questions
What is 400 POST ST's energy grade?
400 POST ST did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 65.9 kBtu/ft².
How much energy does 400 POST ST use?
Its 2025 site energy-use intensity was 65.9 kBtu/ft² (123.0 kBtu/ft² source) across 61,807 sq ft, including 556,655 kWh of electricity and 21,761 therms of natural gas.
What are 400 POST ST's carbon emissions?
400 POST ST reported 224 tCO₂e of greenhouse-gas emissions (3.6 kgCO₂e/ft²) for 2025.
Where is 400 POST ST?
400 POST ST is in San Francisco, California 94102. Its coordinates are 37.78849, -122.40883 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is 400 POST ST and when was it built?
400 POST ST has 61,807 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1909 as its year built. It is classed as commercial.
Is 400 POST ST 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, “400 POST ST, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/400-post-st-e078001e (data as of October 2, 2026).