540-542 Page St, San Francisco, CA 94117

The two-unit residential building at 540-542 Page Street in Hayes Valley, owned by Nicholas Moy and Sandy Yuan, is a 1907 flats/duplex structure that has undergone significant modifications and faced several regulatory challenges over the past two decades. Most notably, between 2020-2021, the building underwent substantial improvements including a comprehensive second and third-floor remodel valued at $130,000, followed by the installation of a fire sprinkler system with eight heads on the third floor, and subsequent upgrades to the electrical and plumbing systems.

A recent permit filed in February 2024 indicates work related to compliance with a physical inspection report and the removal of unauthorized additions to the first floor above the detached garage. The property's history reveals past compliance issues, with building violations documented in 2005-2006 regarding alleged illegal dwelling units in the basement and attic, though these were ultimately abated.

A tenant buyout of $12,500 was executed in June 2021, and there have been multiple parking enforcement incidents reported nearby between 2022-2024. The building's safety infrastructure has been notably improved with the installation of fire sprinklers and monitoring systems, with two cooking-related fire incidents recorded, though fortunately with no civilian injuries. Recent 311 calls from 2023-2024 primarily relate to parking issues and street maintenance rather than building-specific concerns, suggesting improved compliance with residential regulations in recent years.