1423-1427 Mason St, San Francisco, CA 94133

The property at 1423-1427 Mason Street is a 3-story multi-family residential building with 4 units, located in San Francisco's Nob Hill neighborhood. Built in 1913 and owned by James Leong, this flats and duplex-style building has undergone several significant improvements over the past decades.

Most notably, in 2019, a comprehensive top-floor renovation was completed at a cost of $45,819, which included kitchen remodeling, bathroom renovations, electrical upgrades (including a new 100-amp subpanel and GFI installations), and the addition of modern appliances and smoke detectors. The building had a routine safety inspection in 2015 that identified several fire safety issues, including the need for carbon monoxide alarms and fire extinguishers, along with the removal of a wooden utility ladder for roof access; these violations were all abated by June 30, 2015.

Earlier improvements included stairway repairs and fence replacement in 2005, and there are records of several street space permits over the years, with the most recent street space permit issued in 2019. The building's maintenance history shows attention to both structural and safety concerns, though a side sewer vent cover was reported missing in May 2020 and remains an open issue as of this report's creation. The property has generated several parking-related complaints in recent years, with the most recent occurring in January 2024, though these are external issues not directly related to the building's condition or management.