662-664 5th Ave, San Francisco, CA 94118

The two-unit residential building at 662-664 5th Avenue in the Inner Richmond neighborhood is a two-story flats and duplex structure built in 1908, currently owned by Chan Kwong Ting & Wendy C W. The property's maintenance history shows several infrastructure improvements over the years, including electrical upgrades in 2008 with the installation of a 100-amp panel box and associated electrical components, which was a significant modernization of the building's electrical system.

Earlier structural maintenance included the replacement of 30 side wall studs in 1986 and the installation of aluminum windows in 1987. More recently, in 2015, street space and sidewalk repairs were undertaken, though the permits indicate a minimal cost associated with this work. The building has experienced minimal issues in recent years, with only three notable incidents recorded through 311 calls.

In October 2020, there were two Rent Board-related communications involving discussions about landlord fees and potential reimbursements, which were resolved through the appropriate channels. More recently, in April 2021, there was a report of multiple illegal postings on the property, which was promptly addressed and closed by the Department of Public Works. Given the age of the building, the documented maintenance history shows regular upkeep, particularly of major systems like electrical and structural elements, though the most recent significant improvement was nearly 15 years ago.