1517 20th Ave, San Francisco, CA 94122

The two-unit residential building at 1517 20th Avenue in the Central Sunset neighborhood is a two-story flats and duplex structure built in 1988, currently owned by Li Hoi Ping Wong & Chi Keun. The property's maintenance history shows regular upkeep, with the most recent significant exterior work occurring in October 2020 when 20% of the right side wall's exterior siding was repaired and replaced at a cost of $6,000.

Earlier improvements included a kitchen and bathroom remodel in 2010 (though this permit expired before completion) and basement modifications in 1993 involving the removal of counter, wet sink, and cabinets. The building's history includes two earlier significant construction events: demolition of a previous structure in January 1986 and subsequent construction of the current building, both of which were completed successfully.

The property has had minimal recent issues, with only one reported 311 call in July 2024 regarding sidewalk parking, which was investigated but could not be validated by responding officers. Planning records indicate at least one in-kind stucco repair project, though the details are somewhat unclear due to missing developer information. The building's overall record shows routine maintenance and improvements typical of a well-managed two-unit residential property, with no recorded incidents that would significantly impact resident safety or experience.