243 Parnassus Ave, San Francisco, CA 94117

243 Parnassus Avenue is a 3-story multi-family residential building constructed in 1908, containing 6 units and currently owned by Li Jieyi & Mu Ying. The property has undergone several significant improvements over the past two decades, with the most recent major work being completed in 2010, including bathroom renovations in Unit #4 (tub replacement and fixture updates) and some electrical work, though certain electrical permits from that period were marked as cancelled. Earlier improvements include a substantial heating system upgrade in 2006-2007, where wall heaters were replaced in multiple units and new furnaces were installed in Units 1 & 2.

A notable structural improvement was attempted in 2006 with the installation of anchor bolts to secure the building's foundation, though this permit shows as expired. The building experienced several violations in December 2009 related to fire safety requirements, specifically regarding fire proofing materials and gas utility shutoff tools, all of which were resolved by January 2010. There was also a complaint about unauthorized demolition work in March 2013, which was marked as not active. Historical complaints from 1997 indicated some maintenance issues with the main door and back stairs, though these were resolved promptly.

Recent activity around the property has primarily involved external maintenance concerns, with multiple reports in 2024 about garbage, debris, and toter management on the premises. The most recent documented incident related to the building was a carbon monoxide detector activation (with no actual CO detected), though no civilian injuries were reported. The property's maintenance history shows regular attention to unit updates and infrastructure improvements, with most violations being addressed and resolved within reasonable timeframes. The building's age and construction type (Class B) suggest typical maintenance requirements for similar properties, though potential residents should note the building's history of various plumbing, electrical, and heating system upgrades over the years.