1408-1410 Lyon St, San Francisco, CA 94115

The property at 1408-1410 Lyon Street is a two-unit, two-story multi-family residential building located in Lower Pacific Heights. Built in 1900, this flats and duplex structure has undergone several significant modifications and repairs over the past two decades. Most recently, in 2015, issues with the rear stairs were addressed through repairs costing $10,000, following earlier complaints about damaged stairs and missing handrails from 2014-2016.

The building has a documented history of illegal unit concerns, particularly regarding basement modifications, with multiple inspections and violations recorded between 2006-2011. These violations noted several life safety issues including inadequate heating, unapproved wiring and plumbing, insufficient fire resistance materials, missing smoke detectors, inadequate emergency egress, poor natural light and ventilation, and below-minimum ceiling heights in one habitable room. The basement area was subsequently legalized for storage use with bathroom facilities in 2007, transitioning from its earlier unauthorized configuration.

The building has undergone several major maintenance works, including three separate roofing projects between 2013-2014, and stair repairs in the rear of the building in 2015. A routine inspection in 2003 revealed various fire safety and building code concerns that were later addressed, including the installation of required fire extinguishers, smoke detectors, and handrails. More recent concerns include a 2024 public health investigation request, though details of the issue are not specified in the records. While most historic violations and complaints have been resolved, the building's history shows a pattern of stair-related safety issues and unauthorized modifications requiring subsequent legalization, particularly in the basement area.