Four Maritime Plaza
Commercial in San Francisco, CA · 250 CLAY ST · 94111
At a glance
Four Maritime Plaza is a 13,491-square-foot commercial building at 250 CLAY ST in San Francisco, California, built in 1967. In its 2025 San Francisco benchmarking disclosure it reported a site energy-use intensity of 58.5 kBtu/ft² and 43 tCO₂e of greenhouse-gas emissions.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 58.5 kBtu/ft² |
| Source EUI | 81.4 kBtu/ft² |
| GHG emissions | 43 tCO₂e |
| GHG intensity | 3.1 kgCO₂e/ft² |
| Electricity | 44,993 kWh |
| Natural gas | 6,359 therms |
| Gross floor area | 13,491 sq ft |
| Source record | sf:0204/023-A:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 58.5 kBtu/ft² | 43 tCO₂e | |
| 2024 | — | 33.0 kBtu/ft² | 26 tCO₂e | |
| 2023 | — | 18.6 kBtu/ft² | 18 tCO₂e | |
| 2022 | — | 21.0 kBtu/ft² | 20 tCO₂e | |
| 2021 | — | — | — | |
| 2020 | — | — | — | |
| 2019 | — | 29.8 kBtu/ft² | 28 tCO₂e | |
| 2018 | — | 34.0 kBtu/ft² | 32 tCO₂e | |
| 2017 | — | 30.1 kBtu/ft² | 31 tCO₂e | |
| 2016 | — | 26.1 kBtu/ft² | 30 tCO₂e | |
| 2015 | — | 28.9 kBtu/ft² | 32 tCO₂e | |
| 2014 | — | 46.4 kBtu/ft² | 42 tCO₂e | |
| 2013 | 24 | 86.7 kBtu/ft² | 75 tCO₂e | |
| 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
- 250 CLAY ST
- City
- San Francisco
- State
- California
- ZIP
- 94111
- Coordinates
- 37.79570, -122.39849
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does Four Maritime Plaza 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 58.5 kBtu/ft² is about 19% 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 3.1 kgCO₂e/ft² is about 17% above the group average of 2.7 kgCO₂e/ft².
At 13,491 sq ft, it is about 87% below the average floor area of 107,408 sq ft for those buildings. It was built in 1967, 26 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 Four Maritime Plaza's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for Four Maritime Plaza, covering report years 2011–2025. Site EUI moved from 86.7 kBtu/ft² (2013) to 58.5 kBtu/ft² (2025), a 33% decrease. Reported emissions went from 75 tCO₂e to 43 tCO₂e over the same span (down 43%).
What does a site EUI of 58.5 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. Four Maritime Plaza's 58.5 kBtu/ft² across 13,491 sq ft works out to about 0.8 billion Btu (231 MWh-equivalent) in 2025. Its source EUI of 81.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 44,993 kWh of electricity and 6,359 therms of natural gas for the year.
Which law requires Four Maritime Plaza to report its energy use?
Four Maritime Plaza 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:0204/023-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.
More commercial buildings in San Francisco
- 69 GREEN ST LLC· 13,470 sq ft · EUI 4.1 kBtu/ft²
- 522 2ND ST· 13,457 sq ft · score 100 (A)
- Seven to Nine Maritime Plaza· 13,418 sq ft · EUI 191.1 kBtu/ft²
- 201 Kearny St / 212 Sutter St· 13,400 sq ft · score 99 (A)
- 2505 Mariposa St· 13,399 sq ft · EUI 3.6 kBtu/ft²
- 5644 GEARY BLVD· 13,389 sq ft · EUI 35.0 kBtu/ft²
- 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 Four Maritime Plaza's energy grade?
Four Maritime Plaza did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 58.5 kBtu/ft².
How much energy does Four Maritime Plaza use?
Its 2025 site energy-use intensity was 58.5 kBtu/ft² (81.4 kBtu/ft² source) across 13,491 sq ft, including 44,993 kWh of electricity and 6,359 therms of natural gas.
What are Four Maritime Plaza's carbon emissions?
Four Maritime Plaza reported 43 tCO₂e of greenhouse-gas emissions (3.1 kgCO₂e/ft²) for 2025.
Where is Four Maritime Plaza?
Four Maritime Plaza is at 250 CLAY ST, in San Francisco, California 94111. Its coordinates are 37.79570, -122.39849 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is Four Maritime Plaza and when was it built?
Four Maritime Plaza has 13,491 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1967 as its year built. It is classed as commercial.
Is Four Maritime Plaza 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, “Four Maritime Plaza, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/four-maritime-plaza-bc4358dc (data as of October 2, 2026).