845 Waller St, San Francisco, CA 94117

845 Waller Street is a three-story, 4-unit multi-family residential building constructed in 1927, currently owned by Waller St Apts LLC. The property is undergoing significant modifications, including ongoing work as of December 2024 for the addition of three accessory dwelling units (ADUs) and related infrastructure improvements, following earlier permitted work in 2020 that aimed to convert garage spaces and perform seismic retrofitting. The building has a history of addressing various structural and safety improvements, including window replacements in 2016 (10 street-facing windows) and bathroom renovations, as well as addressing dry rot issues in 1996.

Of particular concern is the building's current non-compliant status in the Mandatory Soft Story Retrofit Program (Tier 4), with violations filed in December 2022 for failing to complete required seismic improvements. The property has experienced several safety-related incidents, including a chimney fire (date unknown) and a smoke detector malfunction, though neither incident resulted in civilian injuries. Previous violations from 2002 included multiple safety issues such as stairs repairs, fire escape obstructions, and security concerns, though these were ultimately abated.

The building has undergone various routine inspections over the years, most recently in 2018, and has faced some unauthorized construction questions regarding exterior decks. Recent maintenance issues documented through 311 calls have included graffiti removal, general cleaning needs, and parking-related complaints in 2023-2024. The property is currently in the process of substantial modifications to increase its unit count to eight, as permitted under the city's ADU program, with active permits showing substantial ongoing work including structural, plumbing, and fire safety systems installation.