4151-4153 23rd St, San Francisco, CA 94114

The 2-unit residential building at 4151-4153 23rd Street in Noe Valley, owned by Andrew Lee, has undergone several significant improvements and maintenance work since 2011. Most recently, in March 2024, the property completed the installation of retrofit wood clad windows in the living rooms, representing a significant energy efficiency upgrade with a U-factor below 0.30. The building has also seen substantial plumbing and electrical upgrades in early 2024, including the installation of an air gap for the kitchen sink, expansion tank installation, tankless water heater inspections, dryer vent replacement, and new sump pump installation.

Electrical work has included the separation of electrical systems between the two units in 2022 and compliance upgrades related to grounding systems and GFCI installations in late 2023. The property has undergone various safety and code compliance updates, including a physical inspection in September 2023 that required multiple repairs and upgrades to address inspection findings. Historical records show the building was officially documented as a 2-unit residence in September 2022, and there have been multiple tree-related issues affecting the property, particularly in 2024, with reports of tree roots lifting the sidewalk.

The building has maintained good safety record with only one recorded smoke detector activation incident and no residence injuries. Previous maintenance issues, such as streetlight outages in 2011 and various animal control requests, have been resolved. The property underwent some condominium conversion planning processes, which were ultimately approved, indicating compliance with city regulations.