559 41st Ave, San Francisco, CA 94121

The property at 559 41st Avenue in San Francisco's Outer Richmond district is a two-story multi-family residential building constructed in 1987, featuring two units and classified as a Flats & Duplex structure.

The building's development history began in 1985 with demolition permits for the previous single-family dwelling on the site, followed by the completion of the current structure in 1987. In July 2007, significant improvements were made to the property with the replacement of 24 vinyl windows, some of which are visible from the street, including bedroom windows modified to comply with section 310.4 building codes, at a cost of $14,694.

The building's maintenance record shows relatively few issues over the past several decades, though there was one noteworthy incident involving a sewage system problem in March 2018, when a 4-inch sewer vent issue was reported and subsequently resolved by the PUC Sewer Operations team. This appears to be the only documented infrastructure-related incident in recent history, suggesting that the property has been generally well-maintained with no recurring or significant safety concerns.