1115-1117 Stanyan St, San Francisco, CA 94117

The two-unit residential building at 1115-1117 Stanyan Street, located in the Parnassus/Ashbury Heights neighborhood, is a two-story flats and duplex structure built in 1912, currently owned by Raymond Rosario and Helen M R. The property's maintenance history reveals several significant plumbing infrastructure upgrades, including a complete sewer house trap replacement in 2020, and a major sewer line replacement from the city stub to the property line in 2008.

The building experienced some sewer-related issues in 2018, with two documented sewage backup incidents - one involving an out-of-catch basin situation and another related to a 4-inch sewer vent, though one of these cases was ultimately cancelled in the system. Other maintenance work on record includes street space permits issued in 2007 and 2013, and some structural improvements such as the rebuilding of existing rear stairs in 2003, which was completed at a cost of $1,500.

An older roofing project from 1995 is noted in the records, though this permit has since expired. While the building has experienced periodic plumbing challenges, particularly in 2018, the more recent sewer trap replacement in 2020 and previous sewer line upgrade in 2008 suggest ongoing efforts to maintain and improve the property's infrastructure.