55-57 Cotter St, San Francisco, CA 94112

The two-unit residential building at 55-57 Cotter Street in Mission Terrace, owned by Siu Weng Hong & Wu Qi Lin, is a two-story flats and duplex structure built in 1916. The property has undergone several significant improvements and maintenance work over the past two decades, with the most recent major work being a service weather head replacement completed in October 2024. The building experienced notable plumbing and structural challenges between 2009-2011, including water damage in the basement that led to multiple violations in January 2010, requiring repairs to the concrete floor and foundation, and resulting in fines for various code violations including unpermitted water heater installations and water damage issues.

These violations were all officially abated by September 2011. Subsequent improvements have included bathroom remodels, deck expansion, foundation repairs, and comprehensive electrical system upgrades, including service panel upgrades in 2010-2011. The property has maintained active compliance with building codes since 2011, with no active violations on record.

Recent property management has focused on routine maintenance and improvements, including the installation of smoke detectors and bathroom ventilation systems. The building's surroundings have experienced some neighborhood maintenance issues in 2024, as evidenced by multiple reports of sidewalk defects and garbage concerns, though these are street-level issues outside the building's direct control. The property's maintenance history shows a pattern of addressing both routine upkeep and substantial improvements, particularly focusing on infrastructure upgrades and repairs since resolving the earlier water damage issues.