1208 Mariposa St, San Francisco, CA 94107

The two-unit residential building at 1208 Mariposa Street in Potrero Hill is a two-story flats and duplex structure built in 1900, currently owned by the Gavre-boyd Revocable Trust. The property has undergone several significant improvements over the past three decades, with the most recent work in 2016 including a dormer addition and the installation of an electric skylight with new switch and light. Previous structural updates included deck repairs on the second level in 2011, and several permits from the late 1980s related to interior wall improvements and furnace installation, though some of those permits expired.

The building's maintenance history shows attention to structural elements, including a 1986 permit for lower floor and footing repairs, though this permit was ultimately cancelled. The property has experienced various environmental and maintenance issues in recent years, particularly during 2023-2024, including concerns with sidewalk defects, tree damage and maintenance, hazardous materials, and multiple reports of garbage and debris. These issues have generally been addressed and closed by city services, though they indicate some ongoing challenges with external maintenance.

A significant noise-related incident was recorded in September 2024 during the Portola festival, though it was determined to be within approved sound limits. A fire complaint from 2008 was resolved with conditions corrected within a month. The building's documented history suggests regular updates and maintenance, with particular attention paid to structural elements and roof features in recent years, while also reflecting typical urban challenges related to exterior maintenance in the neighborhood.