1401-1411 Mason St, San Francisco, CA 94133

The three-story, 9-unit multi-family residential building at 1401-1411 Mason Street in Nob Hill, owned by Yee Group Llc, was constructed in 1913 and has undergone significant safety upgrades in recent years. The property has completed mandatory soft-story seismic retrofitting as a Tier 4 building, with both residential and commercial components addressed in 2019-2020.

Fire safety improvements have been substantial, including a complete fire alarm system upgrade in 2020 worth $18,000, installation of low-frequency sounders in sleeping areas, and additional manual pull stations in 2021. The building recently received permits in 2024 for kitchen and bathroom renovations valued at $60,000. Several building violations were resolved in 2024, including issues with seismic bracing for the hot water heater and smoke detector compliance, with all violations abated by April 2024.

The building's maintenance history shows regular attention to safety requirements, though there were multiple routine safety inspections between 2001 and 2016 that identified various issues such as expired fire extinguishers and egress obstructions, all of which were subsequently addressed. The property has experienced some infrastructure-related incidents, including water leaks and false fire alarms, though none resulted in civilian injuries. Recent activity at the address (from late 2024) has shown multiple parking enforcement actions, indicating ongoing challenges with parking compliance in the area, though this is unrelated to building safety or maintenance.