339 Lyon St, San Francisco, CA 94117

The two-story, four-unit multi-family residential building at 339 Lyon Street in Park North, built in 1925, has undergone multiple significant renovations and faced several concerning incidents over the past decade. Most notably, in early 2019, there were serious heating system issues reported, with one tenant complaining of inadequate heat and unsafe exposed asbestos ductwork, which led to violations that were not resolved until February 2019. The building has experienced recurring maintenance and safety challenges, including a 2014 incident involving asbestos dust and ceiling concerns, which prompted multiple work permits and violations that were ultimately resolved by 2015.

Significant electrical system upgrades were completed in 2015, including the installation of a new 300-amp service and modernized equipment, though there were earlier concerns about unauthorized electrical work and hazardous materials in 2010-2012. The property has undergone various unit improvements over the years, including kitchen and bathroom remodels, window replacements, and HVAC system updates, with major works taking place between 2012-2017. The building's history includes several building code violations and complaints related to safety and maintenance issues, particularly during 2014-2019, which required various remedial actions and permits to resolve.

These issues were primarily related to heating systems, electrical work, and concerns about hazardous materials. More recent concerns in 2023 have been primarily external to the building, involving encampment-related issues near the property that were addressed by city services. The property has maintained compliance with building codes since 2019, with no active violations on record, though it has a history of requiring multiple permits to address various maintenance and safety issues.