1600 Thomas Ave, San Francisco, CA 94124

The two-unit residential building at 1600 Thomas Avenue, located in the Bayview neighborhood, is a two-story flats and duplex structure built in 1900. The property has undergone significant recent activity, particularly in late 2022 when multiple violations were documented related to unpermitted construction work, including window replacements, stair and deck modifications, and scaffold issues. These violations were resolved by December 2022 through permits totaling $25,000 for exterior stairs and fence work, along with a $1,500 painting project.

Historical records show major renovation attempts in 2007-2008, including kitchen remodeling, electrical system upgrades, and plumbing work, during which several violations were filed regarding improper work practices and unit configuration. The building has experienced recurring safety and maintenance concerns, including electrical issues, heating system failures, and plumbing problems, with violations recorded for inadequate heat and water systems in 2007. The property has ongoing concerns as of early 2025, with three recent 311 calls documenting sidewalk collapse, garbage issues, and graffiti, though these are primarily exterior concerns.

Historical records indicate past legal and regulatory challenges, including multiple complaints about unauthorized unit conversions and electrical metering issues dating back to the 1990s. The building's infrastructure has received attention over the years, with significant improvements including a complete rewiring (2004), new roofing (2005), and various plumbing upgrades. Multiple violations related to lead containment and work practices were recorded in late 2022, though these were abated through proper permitting processes. The property's recent history shows a pattern of unpermitted work followed by corrective actions and violations related to construction practices, suggesting ongoing challenges with maintaining compliance during improvement projects.