104-106 Corbett Ave, San Francisco, CA 94114

The property at 104-106 Corbett Avenue is a two-unit, two-story multi-family residential building located in the Corona Heights neighborhood, owned by Jasmine Yee Hing Leung and constructed in 1961. The building's history reveals significant concerns about unauthorized unit conversions and safety compliance, particularly during the early 2000s. A major incident occurred in 2004 when an illegal basement unit was discovered, containing two bedrooms, kitchen, bathroom, and living areas, constructed without permits and lacking proper fire protection - this violation was abated in September 2004 through a series of permits that legalized the basement bedroom, including electrical work and a $3,000 building permit.

The building has also undergone various infrastructure updates, including gas houseline extensions in 2007, the installation of a grounding wire in 2005, and earlier projects in the 1980s for fungus damage repairs. More recent history shows continued concerns about unauthorized modifications, with multiple complaints in 2006-2014 regarding possible illegal units in the garage and basement, though these complaints were eventually closed. Building systems have seen improvements through several permits, including electrical upgrades and plumbing work.

The property has experienced some safety issues, including two fire-related incidents in June 2010 (one involving blocked exits and another related to a contained cooking fire), though no civilian injuries were reported. Recent maintenance and environmental concerns have been documented through 311 calls, including reports of graffiti, tree-related property damage, sewer odor, and multiple instances of garbage and debris issues in 2023-2024. While many historical violations have been addressed, the pattern of unauthorized unit modifications and safety-related incidents suggests ongoing challenges with building code compliance and maintenance standards.