1142-1144 Mariposa St, San Francisco, CA 94107

The building at 1142-1144 Mariposa Street in Potrero Hill is a 2-story, 6-unit multi-family residential property built in 1904 and currently owned by Gautier Properties LLC. The building has undergone significant improvements in recent years, most notably a $180,000 soft-story retrofit completed in 2019 to enhance seismic safety. Unit 3 has received particular attention, with multiple renovations in 2021 including electrical upgrades, window replacements, and kitchen remodeling with associated electrical work.

The building has had several maintenance issues over its history, with a series of building violations and complaints in 2010-2011 that included problems with security, interior surfaces, plumbing, fire safety, and rodent infestation, though all these violations were ultimately abated. The property experienced its last significant infrastructure upgrade in 2014 with a rear stair replacement to comply with a Notice of Violation. While there have been some recent 311 calls regarding external issues such as sidewalk defects and parking concerns (2023-2024), these are not directly related to the building's internal conditions. The fire safety record shows mostly false alarms and malfunctioning systems, with no civilian injuries recorded.

The building's maintenance history shows both proactive improvements and reactive responses to violations over the years. Recent renovations suggest ongoing investment in maintaining and upgrading the property, particularly in terms of seismic safety and individual unit modernization. The most recent significant work was completed in 2021, with no major building violations or complaints recorded in the past several years, indicating a period of relative stability. The property's historical challenges with various maintenance issues and violations from 2010-2011 appear to have been addressed, with no similar patterns observed in recent years.