4028-4030 23rd St, San Francisco, CA 94114

Situated in San Francisco's Noe Valley neighborhood, 4028-4030 23rd Street is a four-story multi-family residential building constructed in 1907, currently owned by the Stoia Maoz Family Trust. The property underwent significant renovations between 2013-2014, including the installation of a comprehensive NFPA-13 fire sprinkler system ($30,000), a complete electrical upgrade to 200-amp service for both units, and extensive plumbing improvements including new shower installations and direct vent gas fireplaces.

The 2013 renovation work, valued at $560,000, involved substantial modifications to both units, including garage enlargement, floor plan reconfiguration, and the creation of new dormers, while maintaining its two-unit status and notably reducing non-compliant deck structures. Most concerning is a series of recent complaints filed in September 2023, alleging unauthorized modifications to the property, claiming it was converted from a nine-bedroom duplex to a six-bedroom single-family residence with an au-pair suite, though these complaints are currently listed as not active.

The building's maintenance history shows recurring sewer-related issues between 2019-2022, including multiple sewage backups and flooding incidents that required municipal intervention, indicating potential infrastructure concerns. While extensive improvements were made during the 2013-2014 renovation period, particularly regarding fire safety systems, the timing and nature of the recent occupancy complaints suggest possible ongoing regulatory compliance issues that may not be fully resolved. The property also experienced various minor maintenance matters in recent years, including street cleaning and lighting issues, though these are less critical to habitability concerns.