640-642 Shotwell St, San Francisco, CA 94110

The property at 640-642 Shotwell Street is a two-unit, two-story multi-family residential building located in San Francisco's Inner Mission neighborhood, owned by Michael P Manzo and constructed in 1900. The building has undergone significant improvements in recent years, with completed bathroom remodels in both units (2021 at 642 and 2022 at 640) including modern fixtures, water and vent pipe updates, and lighting improvements, at costs of approximately $10,561 to $14,500 per unit. Substantial infrastructure upgrades have been completed in 2023, including a furnace and heat pump replacement with new electrical service (upgraded from 100 to 200 amps), demonstrating investment in building systems.

Previous improvements include a complete rewiring of the top floor unit (2019) and a tankless water heater replacement with gas line upgrades (2020). The property has experienced multiple fire alarm activations, primarily due to smoke detector malfunctions or false alarms, though none resulted in fires or civilian injuries. There have been no significant safety incidents reported.

While there have been several 311 calls regarding garbage, debris, and illegal parking in the vicinity during 2024-2025, these are external issues and not directly related to building conditions. Notably, there was a significant proposed expansion project in 2009 to add two stories and a lateral addition, though this permit was ultimately cancelled. The building's permitted work history suggests ongoing maintenance and improvement efforts, with particular focus on modernizing bathrooms, updating HVAC systems, and maintaining electrical infrastructure.