470 4th Ave, San Francisco, CA 94118

The Chen Family Trust owns this two-unit, two-story multi-family residential building located at 470 4th Avenue in the Inner Richmond neighborhood. Built in 1907, this flats and duplex-style property has undergone several documented improvements over the past three decades. The most recent significant building improvement was a $9,000 reroofing project initiated in 2003, though this permit has since expired.

In 1994, the property underwent two notable renovations: bathroom remodels on both floors and replacement of exterior sheathing to comply with Section 1708 regulations. An attempted three-story rear addition and ground-level exercise room project proposed in 1993 was withdrawn before completion. The property has experienced several infrastructural and maintenance issues over the years, including a sewage backup incident in 2016 that required intervention from PUC Sewer Operations, which was successfully resolved.

There have been two sidewalk cleaning incidents reported in 2021 and 2022 involving loose garbage. The most significant pattern of issues relates to parking enforcement, with eight documented incidents of blocked driveways between 2016 and 2023, resulting in three citations being issued to offending vehicles. A sidewalk defect was reported in 2013, but inspection revealed no actionable condition at that time. While the building's historical permit records show regular maintenance and improvements, the more recent parking enforcement issues represent the most frequent type of incident associated with this address.