1645 Folsom St, San Francisco, CA 94103

The 12-unit, 3-story apartment building at 1645 Folsom Street in San Francisco's South of Market neighborhood, constructed in 1909 and currently owned by Krell 1990 Trust, has undergone several significant improvements and faced various maintenance challenges over the years. Most notably, the building completed a mandatory soft-story seismic retrofit in 2016 (Tier 4) and upgraded all unit fuse panels to circuit breaker panels in August 2023.

Recent fire safety concerns were addressed in September 2024 when a violation for the alarm system was issued and subsequently corrected. The building has a documented history of maintenance issues, particularly in 2006-2007 when multiple violations were recorded regarding heat supply, hot water, drainage pipes, and window conditions, all of which were eventually resolved. More recent complaints include issues with mildew (2018), peeling paint (2017), and various fire safety concerns in 2022 regarding alarm systems, extinguishers, and blocked exits, all of which were corrected.

The property has undergone several substantial renovations, including window replacements in 2006 costing over $67,000 and multiple dry rot repairs in 2002 totaling approximately $11,500. Recent 311 calls primarily relate to street-level issues such as garbage, debris, and parking enforcement, while fire inspections continue to identify and resolve compliance matters, including a 2024 violation related to the alarm system. The building's electric system has received significant upgrades, including the recent circuit breaker panel installation, suggesting ongoing investment in infrastructure maintenance and improvement.