1411-1421 Mason St, San Francisco, CA 94133

The 6-unit, 3-story multi-family residential building at 1411-1421 Mason Street in Nob Hill, owned by the Young Family Trust A, was constructed in 1909 and has undergone several significant renovations and maintenance work over the years. Most recently, in August 2024, a concrete wall was installed to support deteriorated floor joists and protect against water infiltration in the basement, costing $10,000. The building has received substantial upgrades between 2017-2019, including a major remodeling project in 2017 of units #1417 and #1421 featuring new kitchens, bathrooms, floors, heaters, and front bay window replacements ($85,000).

This was followed by additional renovations in 2018-2019 involving kitchen and bathroom remodels, electrical and plumbing upgrades, including new furnaces installation (totaling approximately $115,000 for both projects). The building has faced several challenges requiring attention to safety and maintenance, though most have been addressed over time. In 2007, a compromised roof access ladder with a broken guardrail raised safety concerns, though this violation was ultimately abated in 2016.

A series of routine inspections in 2016 noted the need for updates to fire safety equipment and light fixtures, with one complaint from 2012 reporting issues with window frames, carpeting, and heating systems. However, these violations and complaints have generally been addressed through subsequent repairs and upgrades. The property has a documented history of general maintenance including window replacements, electrical system upgrades (400-amp service in 2008), and various plumbing improvements, demonstrating ongoing investment in the building's infrastructure and resident comfort. The most recent building permit activity and the resolution of significant structural and systems issues suggest that major safety and comfort concerns have been addressed, though there remains one active violation from 2016 regarding fire safety equipment and lighting that would require follow-up for full resolution.