466 Frederick St, San Francisco, CA 94117

The Heuer Trust property at 466 Frederick Street is a 6-unit, 3-story multi-family residential building constructed in 1900 in the Parnassus/Ashbury Heights neighborhood. The building has undergone significant improvements and modifications over the past two decades, with the most recent work focusing on adding accessory dwelling units (ADUs) to the property. In 2020, two ADUs were proposed for the rear yard (permit filed), and one unit was successfully added to the basement storage area under ADU ordinance #162-16.

This unit addition involved substantial renovations including new heating, plumbing, and electrical systems, completed at a cost of $68,000. The building has seen numerous improvements through the years, including a major upgrade in 2008 when a comprehensive fire sprinkler system was installed ($20,000), and in 2005 when a three-story addition and conversion of the basement into a parking garage was completed for $560,000. The electrical system received a significant upgrade in 2007 with the installation of a 400-amp service entrance and rewiring of all units to comply with current codes. The property has maintained its safety systems with regular inspections, as shown by recent fire alarm system maintenance in October 2023 and previous systems checks in 2005/2006.

Historical records indicate a series of housing quality issues from the late 1990s through 2000, including problems with heat, stairs, damaged ceilings, and security concerns. However, all these violations were duly addressed and abated by August 2000. The building has been actively maintained since then, with regular updates to systems and compliance with current building codes. Recent activities include plumbing work in October 2024 for a new house trap, and the most recent building complaint from 2020 regarding unpermitted roof work, which was eventually marked as not active.