529-531 Arguello Blvd, San Francisco, CA 94118

The three-unit, three-story multi-family residential building at 529-531 Arguello Blvd in the Inner Richmond neighborhood, owned by Thomas O'Donnell & Kathleen, was constructed in 1906 and has undergone several significant improvements over the past two decades. Most notably, the building underwent a substantial horizontal addition in 2015-2016, adding new living space including a bathroom and three bedrooms, along with comprehensive sprinkler system installations.

The property has prioritized safety upgrades, with recent improvements including a new fire alarm panel with sprinkler monitoring system installed in 2022 ($3,200) and the completion of first-floor sprinkler installations in 2021 ($18,182). Historical maintenance records show earlier work including foundation repairs, bathroom renovations, and kitchen remodeling, demonstrating ongoing property upkeep. The building's violation history is minimal and primarily dates back to a single inspection in 2004 that identified several safety concerns including fire extinguisher maintenance and emergency exit requirements, all of which were promptly addressed by September 2004.

More recent 311 calls from 2024 have mainly concerned external issues such as parking violations, sidewalk blocking, and tree maintenance, rather than building-specific problems. Two minor fire incidents were recorded, neither resulting in injuries or significant damage. The property's recent construction and safety improvements, together with the resolution of historical violations, suggest active stewardship by the current owners, though prospective tenants should note the building's age and multi-family status within a predominantly residential neighborhood.