3743-3745 17th St, San Francisco, CA 94114
The property at 3743-3745 17th Street is a two-unit, two-story multi-family residential building constructed in 1885, currently owned by Astrol7 Revocable Living Trust. The building has a concerning history of maintenance and safety issues, with multiple active violations as of 2024. Recent complaints from June and July 2024 have documented various critical problems, including unapproved plumbing installations, damaged interior surfaces, rodent infestation, electrical safety concerns, inadequate lighting, missing smoke detectors, and problems with wood walkways.
There are also serious infrastructure issues reported, such as a leaking roof, water damage, and concerns about an allegedly illegal second-story unit. The building has experienced recurring plumbing and sanitation problems over the years, including issues with the sewer system (documented complaints in 2013 and 2023) and multiple violations related to plumbing work done without proper permits. Earlier maintenance history shows fire-related repairs in 2008, when smoke damage required replacement of drywall and decking in a second-floor unit's kitchen area.
The property has a documented history of occupancy issues, including complaints about illegal unit conversions and unauthorized short-term rentals that were reportedly operating as a "bed and breakfast" known as Castro Castle, though this violation was officially abated in 2017. Various maintenance issues have persisted over the years, with multiple 311 calls related to building and sidewalk maintenance, illegal parking, and street cleaning. The building's overall condition has raised numerous health and safety concerns, leading to multiple violation notices and a scheduled director hearing in October 2024 to address the active violations. The property has permitted certain improvements in the past, such as electrical work in 2005 and various building permits from the 1980s, but many recent and historical repairs appear to have been performed without proper authorization or inspection.
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Building Characteristics
Total units | 2 |
---|---|
Year built | 1885 |
Total area | 1609 sq ft |
Floors | 2 |
Tax Abatements | None |
Building Class | F - Flats & Duplex |

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Included Addresses
- 3743 17th St, San Francisco CA 94114
- 3745 17th St, San Francisco CA 94114
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