3673 16th St, San Francisco, CA 94114

The property at 3673 16th Street is a two-unit residential building located in San Francisco's Duboce Triangle neighborhood. Built in 1900, this two-story flats and duplex structure has undergone several significant improvements and faced some regulatory challenges in recent years. The most substantial renovation occurred between 2016-2017, when the owners added a second unit on the first floor, complete with new kitchen and bathroom installations, insulation upgrades, and a combined domestic and hydronic heating system, at a cost of $88,000.

During the same period, important structural work was completed including voluntary strengthening and foundation replacement costing $50,000. The building's systems received comprehensive upgrades, including electrical service improvements to 200 amps, HVAC system updates, and extensive plumbing work including sewer re-routing and bathroom renovations. The property has faced some regulatory scrutiny, notably in 2015 when a complaint was filed regarding an unpermitted shed in the backyard, which led to a notice of violation and subsequent requirement to remove the illegal structure in early 2017. Since then, all related permits show as either complete or withdrawn, indicating regulatory compliance.

Recent maintenance records show attention to exterior maintenance needs, including tree management in 2022. The building's systems have generally been well-maintained, with regular updates to meet safety and modernization standards, though one plumbing permit from 2012 for gas houseline extension work was canceled. Minimal safety incidents have been recorded, with only one smoke detector activation noted without fire or civilian injuries. The property has maintained a good overall safety record since the resolution of its previous compliance issues.