3635-3637 19th St, San Francisco, CA 94110

The two-unit duplex at 3635-3637 19th Street in Mission Dolores, built in 1915, has undergone several significant improvements over the past few decades, with the most notable being the installation of a solar PV system in 2020 consisting of 10 roof-mounted modules (3.8 kW total) and a 200A electrical service upgrade in 2013. The building experienced an important safety issue in 2001 when unauthorized wooden exit stairs were constructed at the rear without proper permits or inspections, lacking the required handrail and guardrail; this violation was subsequently resolved by March 2002 through proper repairs costing $5,000.

Earlier maintenance work included a roof replacement in 2002 ($6,000) and window replacement in 1996 with new garden-style windows. The property has had its share of neighborhood maintenance issues, primarily related to parking violations, including multiple instances of sidewalk parking and driveway blocking between 2020 and 2024.

There were two graffiti incidents reported in 2023 and 2013, though both were resolved. Other exterior maintenance matters have included sidewalk cleaning and garbage removal in 2014, and a damaged bench report in 2015, all of which were addressed by city services. The building's maintenance history shows regular upkeep of essential systems, though the 2001 stair construction violation indicates a period of non-compliance that was promptly addressed through the proper channels.