738-742 Union St, San Francisco, CA 94133

The three-story multi-family residential building at 738-742 Union Street in North Beach, owned by Mah Mark K K & Siu-mui, is a 5-unit structure built in 1908. The building has experienced several significant maintenance issues in recent years, most notably a serious plumbing problem reported in September 2023 involving badly corroded, leaking DWV piping that created health hazards and unsanitary conditions, with this violation still active as of 2024.

Additional concerning issues have emerged in late 2024, including problems with the hot water heater that was reportedly leaking rusty water, sections requiring a repair or replacement notice, and various unmet safety compliance requirements including smoke and carbon monoxide alarm verifications. The building has a documented history of structural and maintenance concerns, with multiple permits issued for stairway repairs and painting work between 2005-2011 to address previous violations, including dry rot repairs in 2011.

Earlier maintenance issues included problems with peeling paint in 2006 and roof leaks in 1999. The property has undergone several routine inspections over the years, with most recent significant violations being addressed through notices of violation (NOVs) issued in late 2023, with a director hearing date scheduled for February 2025. The building's permit history shows various street space and sidewalk permits from 2006-2020, while the 311 call history reveals typical urban challenges including noise from garbage collection services and some infractions requiring city attention, such as parking violations and waste management issues on the street, which are not directly related to building conditions.