4253-4257 18th St, San Francisco, CA 94114

This three-story, three-unit multi-family residential building, constructed in 1902 and owned by Joseph Tham, has undergone several significant improvements and experienced various maintenance issues over its lifetime. The building received substantial upgrades in the early 2000s, including a complete reroofing in 2003 (cost: $6,430), electrical system modernization in 2009 (200-amp service with multiple circuits), and stair repairs in 2005 ($6,000) following a Housing Inspection complaint about unsafe back stairs that resulted in a Notice of Violation. A vertical addition was completed in 1998, demonstrating investment in expanding the property's capacity.

The building has experienced some concerning safety issues in its history, including electrical wiring problems in 1998 and multiple code violation complaints in 1997. Recent years have shown the property has been well-maintained, with no building violations or major complaints since 2006. The building has had its share of fire-related incidents, though none resulted in civilian injuries or significant damage - most were false alarms or minor cooking-related situations.

Recent activity around the property has primarily involved external concerns such as sidewalk maintenance and refuse management, with multiple 311 calls in late 2024 regarding street cleaning and graffiti, though these appear to be more related to neighborhood conditions than specific building issues. Planning records indicate historical discussions about commercial use of the ground floor, with some controversies over unauthorized signage in 2014 and 2016, though these matters were ultimately resolved or abated. The property's major systems - including roof, electrical, and structural elements - have received regular attention through permitted improvements, suggesting ongoing maintenance practices by the current ownership.