519-521 4th Ave, San Francisco, CA 94118

The property at 519-521 4th Avenue is a two-story, three-unit multi-family residential building located in San Francisco's Inner Richmond neighborhood, owned by the Estate of Thomas Low and constructed in 1927. The building has experienced several significant events over its history, most notably a fire incident in December 2010 that caused damage to the rear second floor and required electrical repairs.

A critical situation arose between 2005-2010 when the building underwent an unauthorized two-story addition, leading to multiple notices of violation for expired permits and construction without proper approvals. This period of non-compliance eventually required abatement proceedings, though the violations were finally resolved in August 2022. In recent years, the building has undergone various renovations, including kitchen and bathroom remodels in 2019-2020, which were properly permitted and included corresponding electrical and plumbing updates.

The property faced several maintenance challenges between 2016-2018, including multiple complaints regarding roofing work and debris issues affecting neighbors, though these matters were eventually resolved. The building's current status shows no active violations or complaints, and recent maintenance work appears to have been properly permitted and completed. The property has received multiple parking enforcement calls between 2018-2023, primarily related to driveway blocking incidents, which have all been addressed through citations or other enforcement actions.