18-24 Steiner St, San Francisco, CA 94117

The three-unit, three-story multi-family residential building at 18-24 Steiner Street, owned by the Steiner Trust, has undergone significant improvements and maintenance since its construction in 1900. Most notably, an ADU unit was successfully added at the ground floor in 2018, following permits issued for both foundation work and electrical improvements, with an estimated cost of $180,000. The building has received substantial electrical system upgrades, particularly in 2009 when major electrical work was completed on both the first and second floors, including the installation of smoke detectors, kitchen appliances, and grounding improvements to meet current codes.

Earlier improvements include complete reroofing projects in 2016 and 1988, as well as window replacements in 2009. The property has a history of routine inspections, with violations noted in 2005 regarding stair safety and security features, though all were abated by June 2005. The building's plumbing systems have seen significant upgrades between 2009-2012, including the installation of new gas lines, furnaces, and bathroom fixtures.

Recent infrastructure maintenance includes various street-level service calls throughout 2024, primarily related to garbage and debris management, though these are municipal rather than building-specific issues. Planning records reveal a successful variance approval for the ADU project in 2018, which required exception to the minimum open area requirements due to existing bay window conditions. The building's documented history of tenant buyouts in 2016 and 2017 suggests previous unit conversions, with payments of $45,000 and $73,000 respectively for three tenants each time.