1318-1320 15th Ave, San Francisco, CA 94122

The Luk Residence Trust owns this two-unit, two-story multi-family residence located at 1318-1320 15th Avenue in the Inner Sunset neighborhood. Built in 1912, this flats & duplex building has undergone several significant improvements over the past few years, with the most recent being the installation of an energy storage system (13.5kWh) in March 2022 and a solar PV system (8.4kW) in October 2020.

The property has seen substantial interior upgrades, including bathroom and kitchen remodels in late 2019, followed by window improvements, with front windows remaining and sliding door replacements. A notable concern for the building has been recurring sewage issues, with six documented sewage backup incidents between 2021 and 2023, all involving 4-inch vent problems, though each was addressed and resolved by PUC Sewer Operations.

The building's infrastructure maintenance has included significant plumbing work in 2018 to address tree root problems with the house trap and sewer line. Other improvements include the construction of new ground floor amenities (playroom, social room, bathroom, tool room & storage area) in 2002, and earlier renewable energy initiatives with the installation of a 4kW solar PV system in 2014. The property has experienced some surface-level issues as noted in recent 311 calls, primarily relating to street cleaning matters and occasional parking violations, but these are not directly related to the building's structure or systems.