449-451 Frederick St, San Francisco, CA 94117

This two-unit residential building, constructed in 1900, is located at 449-451 Frederick Street in the Parnassus/Ashbury Heights neighborhood. The property has undergone significant renovations and improvements in recent years, with major work occurring between 2018-2022. The most substantial project was completed in 2018 when Unit 451 received a comprehensive kitchen and bathroom remodel, including the addition of a powder room and bathroom in the finished basement, with an associated cost of $100,000.

Subsequent improvements included a kitchen remodel (2021), bathroom modifications, and various structural alterations to enhance storage and living space. Plumbing upgrades have been extensive, featuring the installation of new water heaters, replacement of main drain lines, and comprehensive bathroom and kitchen renovations, with the most recent plumbing work occurring in 2022 costing approximately $50,000. The building's infrastructure has seen significant modernization, including the installation of solar panels in 2020 (4.76 kW system), electrical system upgrades, and multiple code compliance improvements.

A notable historical concern was a building complaint filed in 2007 regarding unpermitted construction work, though this was resolved within two months. The property has experienced recurring issues with garbage and debris on the street front, with multiple 311 calls between 2023-2025 reporting abandoned furniture and loose garbage, though all these cases were subsequently resolved. A tenant buyout occurred in May 2018 for $55,000, involving one tenant from Unit 451. The building's maintenance history shows regular upkeep and modernization efforts, with all recent permits indicating proper following of regulatory procedures, though a 2022 complaint regarding possible unpermitted work was filed but is currently listed as not active.