1640-1644 Lyon St, San Francisco, CA 94115

The three-unit residential building at 1640-1644 Lyon Street in Lower Pacific Heights is a three-story flats & duplex structure built in 1910, currently owned by the Adam J Kahn 2020 Trust. In early 2012, the property underwent significant improvements including a comprehensive $75,000 renovation of kitchens and bathrooms across all levels, replacement of 68 windows, and important structural work including foundation post rebuilding.

The same year, all units received new furnace installations, comprehensive plumbing upgrades including bathroom remodels and laundry installations, electrical system improvements, and a complete reroofing, with most of the work being successfully completed. The building has maintained compliance with routine safety inspections from the Housing Inspection Services division, with records showing inspections in 1996, 2004, 2008, 2012, and 2017, though there was one building violation recorded in 2004 related to lead paint concerns which was resolved within two months. Recent history shows several maintenance and incident reports primarily relating to external issues such as parking violations, sidewalk obstructions, and tree maintenance concerns, with the most recent events being parking-related complaints in 2023 and a pavement defect report in 2017.

A tenant buyout occurred at a nearby address (1608 Lyon Street) in 2018 for $10,000 involving one tenant. The building's significant 2012 renovations suggest a substantial investment in improving both safety and living conditions, and subsequent routine inspections have not indicated any major ongoing concerns. The property's recent maintenance records show primarily external infrastructure issues rather than internal building concerns.