447-449 28th Ave, San Francisco, CA 94121

The two-unit residential building at 447-449 28th Avenue in the Central Richmond neighborhood is a 2-story flats and duplex structure built in 1919, currently owned by Lo Simon. The property has undergone several significant renovations and improvements over the past two decades, with the most recent modification occurring in 2024 when additional bedrooms were added to the third floor. Landmark improvements include a comprehensive bathroom and kitchen remodel in 2013 ($28,000) featuring new electrical, plumbing, and fixture upgrades, as well as a significant reconfiguration of living space from a single room to two bedrooms in 2024-2025.

The building's infrastructure has been well-maintained, with major works including a 2012 roof replacement, water heater and cast iron pipe replacement, and the installation of a new heating system. The property has faced some critical safety issues in its history, notably in 2006 when dangerous rear stairs were rebuilt at a cost of $22,000, and in 2004 when the front exterior wall required repairs following vehicle damage. The building experienced a sewage backup incident in 2016 that was resolved.

Recent 311 calls relating to the property have been minimal, with the most recent being a sidewalk parking complaint in 2025. While there was a building inspection complaint in 2020, the outcome is not specified in the available records. The property's maintenance record shows regular upkeep and modernization efforts, with multiple permits issued for electrical, plumbing, and general repairs throughout the years, including compliance with current electrical codes (CEC 150) during various improvements.