51-53 Castillo St, San Francisco, CA 94134

The two-unit residential building at 51-53 Castillo Street is a 1949 two-story structure currently owned by Markelova Guldzhan, located in Visitacion Valley. The property has experienced several significant maintenance and legality issues over its history, with the most pressing recent concerns centered around water damage and mold problems. Between April and September 2024, the building underwent violations related to interior surfaces including damaged walls, water damage, general dilapidation, and several other maintenance issues, all of which were eventually abated.

Earlier this year, complaints surfaced regarding possible unauthorized modifications and illegal units, with an active investigation as of June 2024 concerning an illegal lower unit. The building's maintenance history includes a 2006 permit for ground floor alterations to address violation compliance, legalization of specific rooms, and kitchen removal, as well as electrical work that year involving multiple fixtures and circuits. Previous concerns about structural integrity were documented in 2004 when rotted back stairs required reconstruction, and earlier complaints in 2004 noted issues with the porch area and egress requirements.

The property's historical records show recurring concerns about unauthorized units and illegal modifications, with a notable pattern of water-related issues, including recent complaints of roof leaks and mold as reported in 2023-2024. The building's maintenance and compliance history demonstrates periodic attention to structural and safety issues, though some problems have persisted over extended periods, as evidenced by recent violations that emerged in 2024. The property has also generated multiple parking-related complaints in recent years, though these are largely unrelated to the building's internal conditions.