1107-1109 Mason St, San Francisco, CA 94108

The two-unit residential building at 1107-1109 Mason Street in Nob Hill, owned by the Evelyn Barrett Vincenzi Rev Trust, is a two-story flats and duplex structure built in 1900. The property has undergone several significant maintenance and safety-related improvements over recent years, most notably a comprehensive roof and deck repair project in 2018-2019.

This work was initiated in response to a violation filed in August 2018 regarding an unsafe rooftop deck, which was subsequently abated in April 2019 following the completion of re-roofing work costing $7,800 and structural revisions to the deck framing. The building's earlier history includes foundation replacement work in 1990 and interior remodeling in 1989. More recently, there has been a pattern of parking enforcement issues near the property, with multiple complaints about driveway blocking reported between September and December 2024.

Additionally, there were two reports of garbage and debris on the street during that same period, including one incident involving glass that required attention. Historical complaints regarding construction activities in 2017 and 2018 raised concerns about safety and permit compliance, though these issues were addressed and resolved. The property's maintenance history suggests attention to structural integrity and safety concerns, particularly regarding the roof and deck areas, though no current building violations are on record.