3171-3173 Cesar Chavez St, San Francisco, CA 94110

The two-unit residential building at 3171-3173 Cesar Chavez Street in Bernal Heights, owned by Cheng Chun-chih, was constructed in 1911 and is classified as a two-story flats and duplex structure. The property has undergone several significant maintenance and improvement projects over the past decade, including a complete sewer line replacement in 2015, re-roofing work in 2022 costing $6,000, and a filed proposal in 2021 for an ADU addition that includes demolishing exterior stairs, building a new balcony, and adding a wet bar.

Historical records indicate a building complaint was filed in 1996 regarding welding work, overcrowding, and concerns about an illegal apartment, though this was resolved within weeks. The building has experienced various fire-related incidents, including two gas leak responses and three other good intent calls by emergency services, none of which resulted in civilian injuries. The property has been the subject of multiple tenant buyouts in March 2019, with three separate transactions totaling $169,500 across 15 tenants (7 from 3173 units, 5 from 3171 units, and 3 from 3171 units).

A conditional use authorization request to remove an illegal dwelling unit was withdrawn in 2019, though there have been multiple planning records related to an illegal unit investigation. The surrounding area has seen frequent recent activity, particularly in 2024, with numerous parking-related complaints and resolved encampment situations, though these are external to the building itself. A cancelled roofing permit was filed in 2018, and earlier records from 1985 show an expired permit for stair repairs, indicating ongoing structural maintenance concerns have been addressed over time.