31-33 Mallorca Way, San Francisco, CA 94123

The two-unit residential building at 31-33 Mallorca Way in San Francisco's Marina District, owned by Mdse Llc, is a 1925 two-story flats and duplex structure that underwent significant upgrades and expansion in the early 2010s. The most substantial improvement was the addition of a fourth floor completed in 2011, which included creating new living spaces, a roof deck, and installing 10 sprinkler heads integrated into the existing fire safety system.

The building underwent comprehensive modernization in 2010-2012, including complete renovations of kitchens and bathrooms on multiple floors, installation of new gas furnaces, and electrical system upgrades comprising new fixtures, appliances, and smoke detectors. There was a fire escape staircase issue in 2011 that prompted work orders, though they were eventually cancelled, and the building's exterior received attention with restucco work in 2010. More recently, the property has experienced typical urban maintenance issues, with several 311 calls recorded between 2022-2024 primarily concerning tree damage and maintenance.

The most recent concerns include a report from September 2023 about tree roots lifting the sidewalk (currently open) and two incidents of parking violations in 2024. The building's structural and safety systems appear to be modernized and compliant, with the most significant historical issue being the improper installation of a larger staircase in the light well, which became a planning violation but was subsequently abated. The property's improvements, particularly the addition of fire safety systems and comprehensive unit upgrades, suggest a building that has been maintained and modernized to meet current safety and comfort standards.