Knox Hotel
Multifamily in San Francisco, CA · 241 6TH ST · 94103
At a glance
Knox Hotel is a 54,450-square-foot multifamily building at 241 6TH ST in San Francisco, California, built in 1995. 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 25.5 kBtu/ft² and 76 tCO₂e of greenhouse-gas emissions. That score is higher than 78% of the 129 scored multifamily buildings in San Francisco.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 25.5 kBtu/ft² |
| Source EUI | 45.6 kBtu/ft² |
| GHG emissions | 76 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 171,436 kWh |
| Natural gas | 8,039 therms |
| Gross floor area | 54,450 sq ft |
| Source record | sf:3732/078:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | ±0 | 25.5 kBtu/ft² | 76 tCO₂e |
| 2024 | 100 | 25.1 kBtu/ft² | 81 tCO₂e | |
| 2023 | — | — | — | |
| 2022 | — | — | — | |
| 2021 | — | — | — | |
| 2020 | — | — | — | |
| 2019 | — | — | — | |
| 2018 | — | — | — |
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
- 241 6TH ST
- City
- San Francisco
- State
- California
- ZIP
- 94103
- Coordinates
- 37.77937, -122.40626
Within ~1 km
Nearby benchmarked buildings
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- FOUR SEASONS HOTELscore —
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See also: most efficient in San Francisco · biggest emitters
How does Knox Hotel compare with other multifamily buildings in San Francisco?
The latest disclosures cover 192 multifamily buildings in San Francisco, out of 2,509 buildings citywide. Knox Hotel's ENERGY STAR score of 100 compares with an average of 86 across the 129 that report a score; it scores higher than 78% of them. Its site EUI of 25.5 kBtu/ft² is about 27% below the average of 34.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.4 kgCO₂e/ft² is about 26% below the group average of 1.9 kgCO₂e/ft².
At 54,450 sq ft, it is about 72% below the average floor area of 191,699 sq ft for those buildings. It was built in 1995, 9 years later than the group's average year built (1986). Across all 24 jurisdictions BuildingCensus covers, the 238 multifamily buildings average an ENERGY STAR score of 86 and a site EUI of 34.8 kBtu/ft².
How has Knox Hotel's energy performance changed over time?
BuildingCensus holds 8 San Francisco disclosures for Knox Hotel, covering report years 2018–2025. Its ENERGY STAR score was 100 in both 2024 and 2025. Site EUI moved from 25.1 kBtu/ft² (2024) to 25.5 kBtu/ft² (2025), an 2% increase. Reported emissions went from 81 tCO₂e to 76 tCO₂e over the same span (down 6%).
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. Knox Hotel's 25.5 kBtu/ft² across 54,450 sq ft works out to about 1.4 billion Btu (407 MWh-equivalent) in 2025. Its source EUI of 45.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 171,436 kWh of electricity and 8,039 therms of natural gas for the year.
Which law requires Knox Hotel to report its energy use?
Knox Hotel 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:3732/078:2025). 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 multifamily buildings in San Francisco
- 1078 SUTTER ST· 54,442 sq ft
- 641 OFARRELL ST· 54,320 sq ft · score 92 (A)
- 1201 Ridge Ct· 53,705 sq ft
- Mission Plaza Apartments - Mission· 53,461 sq ft · EUI 7.6 kBtu/ft²
- 451 DONAHUE ST· 53,160 sq ft · score 94 (A)
- 642 JONES ST· 52,800 sq ft · score 100 (A)
- Multifamily buildings in San Francisco· 192 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 Knox Hotel's energy grade?
Knox Hotel 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 Knox Hotel use?
Its 2025 site energy-use intensity was 25.5 kBtu/ft² (45.6 kBtu/ft² source) across 54,450 sq ft, including 171,436 kWh of electricity and 8,039 therms of natural gas.
What are Knox Hotel's carbon emissions?
Knox Hotel reported 76 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2025.
Where is Knox Hotel?
Knox Hotel is at 241 6TH ST, in San Francisco, California 94103. Its coordinates are 37.77937, -122.40626 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is Knox Hotel and when was it built?
Knox Hotel has 54,450 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1995 as its year built. It is classed as multifamily.
Is Knox Hotel 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, “Knox Hotel, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/knox-hotel-2bed7396 (data as of October 2, 2026).