401 Lake St, San Francisco, CA 94118

The 15-unit, 3-story multi-family residential building at 401 Lake Street, owned by Pietro & Pietro, was constructed in 1962 and has undergone several significant updates to maintain safety and compliance with current codes. The building completed seismic upgrades as a Tier 2 soft-story retrofitting project in 2014, which included the installation of shear walls, hold downs, and steel cross bracing.

The property has a documented history of fire safety system improvements, including a voluntary local fire system replacement in 2017 with new control panels, smoke detectors, and pull stations, followed by multiple fire alarm system upgrades and maintenance checks through 2024. These efforts have been accompanied by various fire safety violations and complaints over the years, particularly between 2016 and 2024, regarding alarm systems, extinguishers, and sprinkler systems, though all were marked as "Condition Corrected" or "Abated" upon follow-up inspections. The building has undergone several major infrastructure improvements, including reroofing in 2014 ($33,100), window replacements, stucco work, and dry rot repairs in 1994, along with a furnace replacement in 2008.

A routine housing inspection in 2004 identified multiple fire safety issues, including problems with smoke enclosure doors, fire extinguishers, and fire escape ladders, which were all resolved within three months. The property appears to have maintained regular compliance with building codes since then, though there have been recurring fire safety system maintenance issues. Recent activity at the address includes several parking enforcement calls in 2024, and three 311 calls in late 2024 regarding street signage, debris, and a damaged tree, with the latter remaining open as of the latest records.