1401 Lyon St, San Francisco, CA 94115

1401 Lyon Street is a 3-unit, 2-story multi-family residential building constructed in 1900, located in San Francisco's Lower Pacific Heights neighborhood. The property, owned by Kladpetch Sasinun, has undergone significant maintenance and improvements over the past few years, with major work including a voluntary foundation upgrade and structural strengthening in 2020 (completed at a cost of $48,000), the installation of an overhead automatic fire sprinkler system throughout the basement in late 2021, and various unit upgrades in 2022 including siding replacement, water heater installations, and kitchen appliance updates. The building experienced several notable issues during 2019-2022, particularly concerns related to water damage and building maintenance.

Multiple housing code violations were recorded in 2019, including water damage repairs, fire safety issues, and concerns about lead-based paint, though these were abated by November 2019. In 2021, there were complaints about dangerous excavation work, and in 2022, multiple complaints were filed regarding improper gas meter installations and roof leaks potentially causing mold. Recent improvements in 2024 include gas meter relocation work and plumbing system upgrades.

The building has had several emergency services responses, primarily related to system malfunctions and detector activations, but without any reported civilian injuries. Regular maintenance issues have been documented through 311 calls, primarily concerning street cleaning and sidewalk maintenance. The property's maintenance history shows a pattern of addressing both voluntary improvements and responding to various code compliance issues, with most recent work focusing on system upgrades and safety improvements. The gas meter relocation in 2024 and various plumbing upgrades indicate ongoing efforts to maintain and improve infrastructure systems, though the property has experienced periodic maintenance challenges that have required official interventions.