1000 Mason St, San Francisco, CA 94108
1000 Mason Street is a 10-story, 53-unit multi-family residential building constructed in 1926, currently owned by Fritz Property Group Inc and located in San Francisco's Nob Hill neighborhood. The building has undergone extensive renovations in recent years, with significant work completed in individual units including Unit 301's recent bathroom remodel and lighting upgrades (2024), and previous renovations in Units 101, 205, and 302.
A notable improvement to the building's infrastructure was the installation of a 65.4 kW roof-mounted PV system in 2022. The property has experienced several fire safety concerns, with multiple violations documented between 2018 and 2024, including issues with sprinkler systems, extinguisher placement, and alarm systems. Most recently, a violation was issued in December 2024 regarding highrise sprinkler system compliance.
The building's fire alarm system is currently undergoing improvements, with a permit issued in January 2024 for adding notifications throughout residential units to comply with local fire codes. Recent complaints regarding the boiler permits in May 2023 have been resolved, though there remains an open violation from October 2023 regarding sleeping area requirements. The property has maintained regular unit renovations and system upgrades, though historically there have been issues with unauthorized plumbing modifications (notably in 2012), which were subsequently addressed.
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Building Characteristics
Total units | 53 |
---|---|
Year built | 1926 |
Total area | 128820 sq ft |
Floors | 10 |
Tax Abatements | None |
Building Class | A15 - Apartment 15 Units or more |

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Key Building Statistics
Included Addresses
- 1000 Mason St, San Francisco CA 94108
- 1040 Sacramento St, San Francisco CA 94108
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