1000 MASON ST
Mixed Residential in San Francisco, CA · 94108
At a glance
1000 MASON ST is a 236,917-square-foot mixed residential building in San Francisco, California, built in 1926. It is listed in the 2025 Existing Buildings Energy Performance Ordinance disclosure without energy figures: no ENERGY STAR score, energy use or emissions were published for it that year.
No energy data reported for 2025
1000 MASON ST appears in the 2025 Existing Buildings Energy Performance Ordinance disclosure, but no ENERGY STAR score, energy use or emissions were published for it — the building did not report benchmarking data for that year.
Floor area on file: 236,917 sq ft · Built 1926
Source record sf:0223/008:2025
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
- 1000 MASON ST
- City
- San Francisco
- State
- California
- ZIP
- 94108
- Coordinates
- 37.79309, -122.41047
Within ~1 km
Nearby benchmarked buildings
- 555 Californiascore 75
Commercial · 1,968,807 sq ft
Commercial · 1,964,250 sq ft
Hotel · 1,964,250 sq ft
Hotel · 1,964,250 sq ft
- 555 California Streetscore 76
Office · 1,810,397 sq ft
Commercial · 1,684,713 sq ft
See also: most efficient in San Francisco · biggest emitters
How has 1000 MASON ST's energy performance changed over time?
BuildingCensus holds 8 San Francisco disclosures for 1000 MASON ST, covering report years 2018–2025. None of those years carry an ENERGY STAR score or site EUI.
Which law requires 1000 MASON ST to report its energy use?
1000 MASON 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:0223/008:2025). 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 mixed residential buildings in San Francisco
- Embarcadero Triangle· 236,885 sq ft
- 380 CLEMENTINA ST· 236,136 sq ft · score 84 (B)
- 10 BERTIE MINOR LN· 234,000 sq ft · score 100 (A)
- Shoreview Apartments· 231,316 sq ft · score 100 (A)
- 170 KING ST· 229,124 sq ft · score 86 (A)
- The Hayes· 227,503 sq ft · score 100 (A)
- Mixed Residential buildings in San Francisco· 610 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 1000 MASON ST's energy grade?
1000 MASON ST has no grade: it did not report energy data for 2025. The 2025 Existing Buildings Energy Performance Ordinance disclosure lists the building but publishes no ENERGY STAR score, energy use or emissions for it.
Where is 1000 MASON ST?
1000 MASON ST is in San Francisco, California 94108. Its coordinates are 37.79309, -122.41047 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
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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, “1000 MASON ST, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/1000-mason-st-7b03acd7 (data as of October 2, 2026).