The Monadnock Building
Commercial in San Francisco, CA · 685 MARKET ST · 94105
At a glance
The Monadnock Building is a 222,918-square-foot commercial building at 685 MARKET ST in San Francisco, California, built in 1906. In its 2025 San Francisco benchmarking disclosure it reported a site energy-use intensity of 21.1 kBtu/ft² and 265 tCO₂e of greenhouse-gas emissions.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 21.1 kBtu/ft² |
| Source EUI | 50.8 kBtu/ft² |
| GHG emissions | 265 tCO₂e |
| GHG intensity | 1.2 kgCO₂e/ft² |
| Electricity | 1,067,445 kWh |
| Natural gas | 10,644 therms |
| Gross floor area | 222,918 sq ft |
| Source record | sf:3707/051:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 21.1 kBtu/ft² | 265 tCO₂e | |
| 2024 | — | 17.0 kBtu/ft² | 235 tCO₂e | |
| 2023 | — | 18.3 kBtu/ft² | 265 tCO₂e | |
| 2022 | — | 16.6 kBtu/ft² | 234 tCO₂e | |
| 2021 | — | 25.9 kBtu/ft² | 342 tCO₂e | |
| 2020 | — | 29.7 kBtu/ft² | 429 tCO₂e | |
| 2019 | 85 | -4 | 45.8 kBtu/ft² | 700 tCO₂e |
| 2018 | 89 | ±0 | 42.1 kBtu/ft² | 641 tCO₂e |
| 2017 | 89 | -7 | 40.9 kBtu/ft² | 627 tCO₂e |
| 2016 | 96 | -1 | 39.4 kBtu/ft² | 726 tCO₂e |
| 2015 | 97 | -1 | 38.2 kBtu/ft² | 658 tCO₂e |
| 2014 | 98 | +1 | 28.2 kBtu/ft² | 485 tCO₂e |
| 2013 | 97 | +1 | 35.9 kBtu/ft² | 614 tCO₂e |
| 2012 | 96 | +1 | 40.1 kBtu/ft² | 757 tCO₂e |
| 2011 | 95 | 39.2 kBtu/ft² | 757 tCO₂e |
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
- 685 MARKET ST
- City
- San Francisco
- State
- California
- ZIP
- 94105
- Coordinates
- 37.78765, -122.40276
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
- PGE-GO Complexscore —
Commercial · 1,948,626 sq ft
- One Market Plazascore 79
Office · 1,830,339 sq ft
See also: most efficient in San Francisco · biggest emitters
How does The Monadnock Building 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 21.1 kBtu/ft² is about 57% 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 1.2 kgCO₂e/ft² is about 56% below the group average of 2.7 kgCO₂e/ft².
At 222,918 sq ft, it is about twice the average floor area of 107,408 sq ft for those buildings. It was built in 1906, 35 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 The Monadnock Building's energy performance changed over time?
BuildingCensus holds 15 San Francisco disclosures for The Monadnock Building, covering report years 2011–2025. Its ENERGY STAR score went from 95 in 2011 to 85 in 2019 (-10 points); its best year on file was 2014, at 98. Site EUI moved from 39.2 kBtu/ft² (2011) to 21.1 kBtu/ft² (2025), a 46% decrease. Reported emissions went from 757 tCO₂e to 265 tCO₂e over the same span (down 65%).
What does a site EUI of 21.1 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. The Monadnock Building's 21.1 kBtu/ft² across 222,918 sq ft works out to about 4.7 billion Btu (1,378 MWh-equivalent) in 2025. Its source EUI of 50.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,067,445 kWh of electricity and 10,644 therms of natural gas for the year.
Which law requires The Monadnock Building to report its energy use?
The Monadnock Building 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:3707/051:2025). 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
- 235 Pine· 222,853 sq ft
- 75 Howard Street Garage· 222,681 sq ft · score 70 (B)
- 350 Bay St.· 222,307 sq ft · EUI 9.4 kBtu/ft²
- Kaiser San Francisco Mission Bay MOB· 221,660 sq ft · score 48 (D)
- 333 BRANNAN ST· 221,426 sq ft · score 86 (A)
- 536 Mission St· 220,800 sq ft · EUI 33.5 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 The Monadnock Building's energy grade?
The Monadnock Building did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 21.1 kBtu/ft².
How much energy does The Monadnock Building use?
Its 2025 site energy-use intensity was 21.1 kBtu/ft² (50.8 kBtu/ft² source) across 222,918 sq ft, including 1,067,445 kWh of electricity and 10,644 therms of natural gas.
What are The Monadnock Building's carbon emissions?
The Monadnock Building reported 265 tCO₂e of greenhouse-gas emissions (1.2 kgCO₂e/ft²) for 2025.
Where is The Monadnock Building?
The Monadnock Building is at 685 MARKET ST, in San Francisco, California 94105. Its coordinates are 37.78765, -122.40276 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is The Monadnock Building and when was it built?
The Monadnock Building has 222,918 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1906 as its year built. It is classed as commercial.
Is The Monadnock Building 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.
Working with San Francisco building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “The Monadnock Building, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/the-monadnock-building-c9beed10 (data as of October 2, 2026).