4020-4022 California St, San Francisco, CA 94118

The property at 4020-4022 California St is a two-unit, two-story multi-family residential building located in the Lake-Presidio neighborhood, owned by the Lee Family Trust and constructed in 1900. The building has undergone several significant improvements over the years, including a comprehensive bathroom and kitchen renovation on the second floor in 2008 (costing $10,500) which included updates to electrical circuits, bathroom fixtures, and exhaust systems, followed by roofing work completed in 2007 (costing $10,000).

Both plumbing and electrical permits from 2008 confirm the scope of these renovations, including the installation of new lighting, switches, receptacles, and ventilation systems. Of particular concern are recurring sewage issues documented in recent years, with seven separate sewer-related incidents reported between December 2020 and June 2024, including the most recent occurrences in February and June 2024 involving 4-inch sewer vents. While all these cases have been resolved through field work or service orders, the frequency of these sewer issues suggests an ongoing infrastructure challenge.

Additionally, there have been two instances of illegal postings in early 2022, which were promptly addressed by city services. Two street space permits were issued in 2017, though their specific purpose requires further context. The building's maintenance history shows regular upkeep of major systems, with no reported safety violations or emergencies in the available data.