647 Mangels Ave, San Francisco, CA 94127

The two-unit multi-family residential building at 647 Mangels Ave in the Sunnyside neighborhood, owned by Robert B Stenson, was constructed in 1924. The one-story building has undergone several significant maintenance and improvement projects over the past few decades, including a window retrofit in 2008 (replacing 7 aluminum windows with energy-efficient vinyl windows), reroofing in 2003, and the installation of an interior staircase handrail in 1992.

The property has experienced multiple fire-related incidents and complaints, though none resulted in civilian injuries or serious damage - these included several false alarms/false calls between 2005 and 2019, one incident involving electrical wiring/equipment in 2006, and a combustible materials complaint in 2005 that was found to have no merit. Recent activity at the property has primarily involved external maintenance and enforcement issues.

A cluster of 311 calls between January 2-11, 2025, mainly focused on parking violations (three citations issued for parking on the sidewalk), lighting problems (two burnt-out street lights), garbage management (toters left out), and debris on the street. These recent external issues and the historical fire alarm history may be of interest to potential residents. The building's maintenance record shows regular upkeep over the years, with no major structural or safety concerns documented in the available data.