31-33 Moulton St, San Francisco, CA 94123

This two-unit multi-family residential building, located at 31-33 Moulton Street in Cow Hollow, is a 1924 flats/duplex structure currently owned by the Kao-chan Trust. The property has undergone several notable improvements and faced some significant challenges over its history.

The most concerning event occurred in February 2012 when tenants reported a serious foundation slope (over 2 inches for every 6 feet) and a troubling structural shift they likened to an "earthquake," which they suggested might be related to nearby street construction; this complaint was officially recorded and investigated but marked as "Not Active" in April 2012. The building has seen various maintenance and improvement projects, including electrical upgrades in 2003 with the installation of a 200-amp service and two meters/panels, new vinyl windows installation in 2003 and 2004, and a sidewalk expansion project in 2003 to increase the driveway width. Historical records show some structural modifications from 1984 and stairway repairs in 1999.

More recently, the property has experienced persistent issues with driveway blocking, with multiple complaints filed between 2022 and 2025, though these are primarily parking enforcement matters rather than building-related issues. The building's maintenance record shows regular upkeep, including window replacements and staircase repairs, with most recent improvements focusing on preserving existing structures rather than major renovations. While the foundation concerns from 2012 remain the most significant incident on record, the lack of subsequent complaints or building violations in recent years could suggest these issues were resolved, though no documented follow-up remediation is noted in the available data.