1848-1852 Mason St, San Francisco, CA 94133

The three-unit residential building at 1848-1852 Mason Street in North Beach, owned by Justin Nychay, has undergone significant renovations since 2019, including the installation of new fire safety systems and extensive unit upgrades. In late 2019, updates included the installation of a new automatic fire alarm system ($10,000) and comprehensive plumbing improvements throughout the building, featuring new systems for bathrooms, kitchens, and laundry facilities ($150,000).

The building underwent a major renovation period in 2019-2020 which included work to abate planning code violations related to unauthorized interior wall removal, for which a $25,000 permit was issued in February 2020. The project experienced some construction-related issues, as evidenced by multiple complaints in 2019 regarding work hours, dust control, and safety concerns, all of which were subsequently addressed. The building's recent history shows robust improvements to safety and infrastructure, including new fire sprinkler systems and comprehensive electrical upgrades (including new panels and wiring) completed between 2019-2020.

The property has maintained regular inspections, with some historical violations from 2004-2008 related to interior surfaces, lighting, and exit obstructions, though these have all been documented as abated. The renovation period included the addition of new habitable space in the basement and a new roof deck, along with window replacements for improved energy efficiency. More recent records from 2023-2025 primarily consist of routine external maintenance issues such as parking violations and debris removal on the exterior, which are typical for urban properties and have been routinely addressed.