4506-4508 California St, San Francisco, CA 94118

The three-story, multi-family residential building located at 4506-4508 California Street, owned by Paul K Wong, has undergone significant transformation since its construction in 1924. The most substantial renovation occurred in 2014, when the property underwent a comprehensive interior remodel including horizontal additions at the sides and rear, installation of a roof deck over a new fourth level, and the addition of a four-story elevator.

This $750,000 project aimed to enhance living space across both units, with work completed at both ground/second levels (lower unit) and third/fourth levels (upper unit). In addition to the major 2014 renovation, the building has seen various maintenance and compliance activities. In 2005, the rear exterior stairs were replaced, and in 1995, stucco repairs were performed on the front facade.

A notable incident occurred in early 2019, when a complaint was filed regarding a potentially unauthorized third dwelling unit in the two-unit building, with concerns about short-term rental activity, though this complaint was marked as "Not Active." The property has experienced typical urban neighborhood challenges, as evidenced by several 311 calls between 2018-2022 related to street cleaning, parking enforcement, and illegal postings, though these issues appear to be street-related rather than building-specific. The extensive 2014 renovation work included initial exploratory work to assess framing, vents, and drains, involving the removal and replacement of plaster in 12 designated areas, followed by the major improvements that transformed the building's structure and accessibility. The most recent building-related activity on record appears to be the various maintenance and safety inspections associated with the major renovation projects completed in 2014.