1331-1333 20th Ave, San Francisco, CA 94122

The property at 1331-1333 20th Avenue in San Francisco's Central Sunset neighborhood is a two-unit, two-story multi-family residential building known as a flats and duplex, constructed in 1927 and currently owned by William Lee. The building's maintenance history shows three significant improvements: a $9,000 reroofing project completed in 2019, repair of dry rot completed in 1998, and the installation of seven aluminum windows in 1984.

Recent activity near the property has primarily involved public space maintenance rather than building-specific issues. Between November 2023 and May 2024, there were five documented incidents of human or animal waste requiring street and sidewalk cleaning services from the Department of Public Works, all of which were resolved.

Additional incidents include a parking enforcement case in February 2019 (resulting in a citation), a building inspection request transferred to the Department of Building Inspection in December 2018, and a reported encampment in March 2021 that authorities were unable to locate. While these external incidents do not directly reflect on the building's condition, they provide context about the immediate neighborhood environment. The most significant building maintenance work on record was the 2019 reroofing project, which aligns with proper building upkeep practices for a structure of this age.