1640-1642 Leavenworth St, San Francisco, CA 94109

The two-unit residential building at 1640-1642 Leavenworth Street, located in San Francisco's Nob Hill neighborhood, is a two-story flats and duplex structure built in 1909 and currently owned by Liang Lifang. The property has undergone several significant improvements over the years, with the most substantial renovations occurring between 1999-2001, including comprehensive bathroom remodels, window replacements, and plumbing upgrades totaling approximately $25,000.

Subsequent improvements include garage remodels in 2005 ($3,000) and 2011 ($2,000), with the most recent garage door replacement featuring wood materials. The building's recent history includes a complaint in February 2018 regarding allegedly illegal construction, though this case is currently listed as not active.

The property has experienced several infrastructure-related incidents in the surrounding area, including multiple hazardous materials incidents involving glass in 2020 and 2021, and several parking-related complaints in 2018 involving construction equipment blocking sidewalk access and an illegal parking situation that resulted in a $2,000 violation. While these external incidents occurred in the vicinity of the property, they primarily involved street and sidewalk issues rather than direct building concerns. The building's permit history suggests regular maintenance and upgrades, with no records of major violations or safety concerns directly related to the structure itself.