1240 Treat Ave, San Francisco, CA 94110

The two-unit multi-family residential building at 1240 Treat Avenue in San Francisco's Inner Mission neighborhood is a two-story flats and duplex structure built in 1900, currently owned by Su Guan Hua. The building has a documented history of potential code violations and safety concerns, particularly regarding unauthorized basement modifications.

In 2014, two significant complaints were filed regarding an allegedly unpermitted basement unit with inadequate egress and fire safety features, though these complaints are currently listed as not active. A similar complaint from 1998 about an unauthorized basement unit remains active. Earlier building modifications include sewer line work completed in 2014, and several expired permits from the 1990s for partition removal and debris cleanup.

The property has experienced recurring issues with street cleanliness, as evidenced by ten separate reports of garbage and debris problems in 2024, including multiple instances of overflowing city garbage cans between April and October 2024. Earlier complaints from 1994 regarding energy requirement compliance and insulation work were resolved, and a sewer line replacement project completed in 2014 was conducted in coordination with the neighboring property at 1246 Treat Avenue. While the building's current status shows several resolved street cleaning issues, the historical record suggests ongoing concerns about proper unit configuration and building modifications, particularly regarding the basement space.