3678-3680 16th St, San Francisco, CA 94114

The property at 3678-3680 16th Street in the Duboce Triangle is a two-unit multi-family residential building constructed in 1900, currently owned by 3680 16th Street LLC. The building underwent significant renovation between 2019-2021, converting an existing workshop and storage space into an additional dwelling unit and performing extensive bathroom and kitchen remodels on all floors, including addressing severe dry rot issues. A comprehensive fire safety upgrade was completed in 2020-2021, including the installation of a new fire sprinkler system throughout the building at a cost of $38,600, with subsequent monitoring system installation.

The property has experienced several concerning issues in recent years, particularly related to water management and drainage. Multiple complaints from 2021-2023 indicate problematic drainage systems and water damage affecting neighboring properties, though some of these complaints have since been closed. Additional concerns emerged in 2023 regarding unpermitted demolition and excavation work in the rear garage and backyard areas, with ongoing complaints about unauthorized concrete removal.

The building's infrastructure received attention through various permits, including sewer replacement work in 2021 and the installation of new furnaces in 2020. Historical records show earlier maintenance work included reroofing in 2007 and addressing dry rot concerns through multiple permits. The property has had three recorded fire alarm-related incidents between 2019-2021, though none resulted in injuries or significant damage.