1451 Green St, San Francisco, CA 94109

The two-unit residential building at 1451 Green St in Russian Hill, owned by Holly A & Ronald L Kirkpatr, has a complex history of unpermitted modifications and code compliance efforts. Built in 1908, this two-story flats and duplex structure has been at the center of multiple compliance issues, most notably a significant case initiated in September 2017 regarding unpermitted construction of a two-story deck, exterior stairs, and non-rated partition walls. These issues led to various enforcement actions, including a Final Warning Letter in December 2017 and a director hearing in May 2023.

While there have been attempts to address these violations through permit applications, including a 2018 variance request to legalize ground floor expansion, these efforts have encountered setbacks, with a recent permit for legalization filed in December 2021 being withdrawn. The building has undergone several significant structural improvements in the past, including reroofing work and dry rot repairs in 1990, along with foundation underpinning work completed in 1989. More recently, there has been ongoing attention to the property's exterior conditions, with multiple 311 calls between 2023 and 2024 reporting issues such as sidewalk defects, abandoned debris, and cleaning needs.

A sprinkler system activation incident was recorded, though it was determined to be unintentional with no fire damage or civilian injuries. Notably, a 2024 investigation determined that no unauthorized dwelling unit (UDU) was present in the building, and the Planning Department has processed various applications related to the property, including an approval letter for deck legalization in February 2024. The building's recent history has been marked by attempts to bring unauthorized modifications into compliance, though with varying degrees of success and ongoing enforcement activity.