527-531 Duboce Ave, San Francisco, CA 94117

The 4-unit, 3-story apartment building at 527-531 Duboce Avenue, built in 1906, has undergone significant recent improvements, most notably the installation of a solar PV system (8.64 kW) and HVAC system on the roof in 2023, along with electrical panel relocations and upgrades. Recent maintenance has focused on unit improvements and building systems, including a $40,000 kitchen and bath remodel in Unit B (2021), comprehensive electrical upgrades (2021), and plumbing improvements including water heater replacement (2022).

The building has a history of proactive maintenance, with major works completed in recent years including window replacements (2015), multiple apartment renovations (2011-2012), and roofing work (2012). The property has experienced some issues requiring attention, including building violations in 2015 related to weatherproofing and lead paint concerns, though these were abated by May 2015. The most recent complaints have been minor in nature, including street cleaning matters and maintenance of common areas.

A documented cooking fire incident with no civilian injuries occurred, though no date is specified. The building's infrastructure has seen substantial upgrades over the years, including an underground service conversion to 150A with 4 meters in 2005, indicating consistent investment in maintaining and upgrading the property. Recent 311 calls primarily relate to exterior and street issues rather than building-specific problems, suggesting overall stability and maintenance of the building systems and units.