173-177 Duncan St, San Francisco, CA 94110

The three-story, four-unit apartment building at 173-177 Duncan Street in Noe Valley, owned by Charles L Hostetter Lvg Tr, has experienced several significant improvements and maintenance events since its construction in 1900. Most notably, the building underwent substantial modernization in 2017-2018 with the installation of a solar power system (10.22 kW) including 28 PV modules and a new 100A service, followed by the addition of an EV charger in the garage in 2011. The property has maintained active building upkeep, including a complete reroofing in 2007 costing $12,000 and notable electrical system upgrades in 2003-2004 comprising new wiring for two units and extensive electrical repairs.

The building has faced several violations and complaints over the years, though all have been resolved. These include a 2000 violation requiring installation of self-closing doors and smoke detectors, a 2003 complaint regarding unauthorized chimney removal, and a 2004 incident involving unpermitted third-floor remodeling. More recently, there was a sewer leakage complaint in 2012, which was subsequently addressed.

The property has had multiple building permit applications, including a 2003 deck modification to comply with fire safety regulations and a 2004 third-floor remodel. Recent activity at the property has primarily consisted of parking-related enforcement issues, with multiple citations issued between 2023-2024 for parking violations near the property, though this is not directly related to building conditions or maintenance. The building's most serious incident on record appears to be a gas leak situation (412) according to fire incident records, though no civilian injuries were reported.