4019 23rd St, San Francisco, CA 94114

The property at 4019 23rd Street in Noe Valley is a two-unit, two-story multi-family residential building constructed in 1900, currently owned by Clair Richard J & Evelyn Lv. The building has undergone several significant improvements over the past decades, including seismic strengthening of basement and first-floor shear walls in 1990, repair of dry rot in 1991, and most recently, replacement of five windows in 2015 with energy-efficient units having a maximum U-factor of 0.32.

A notable recent concern was a fire complaint in September 2024 regarding combustible materials, though this issue was resolved by November 2024. The property's maintenance history shows various infrastructure and safety improvements, particularly focusing on structural integrity and energy efficiency. Several municipal service calls have been logged, with the most significant being a sewage backup incident in 2013 that required field work to resolve.

The building has experienced occasional neighborhood issues typical of urban settings, including graffiti incidents (2009 and 2017), abandoned vehicles (2009 and 2017), and tree maintenance needs (2019). While these incidents reflect normal urban challenges, they appear to have been promptly addressed by appropriate city agencies. The absence of recent major structural or safety issues is noteworthy, though the combustible materials violation from late 2024 brings attention to building maintenance practices that warrant monitoring.