2445-2447 Mariposa St, San Francisco, CA 94110

Mariposa Gardens, located at 2445-2447 Mariposa St in the Inner Mission neighborhood, is a 64-unit multi-family residential building constructed in 1983. The property has undergone significant infrastructure upgrades and maintenance work in recent years, with particular attention to safety systems. Most notably, the building received a comprehensive fire alarm system replacement in late 2022 at a cost of $179,748, followed by additional modifications in 2023 including the installation of heat detectors in garages.

A substantial structural retrofit was completed in 2022, focusing on garages and deck waterproofing, costing $5.5 million. The building has faced various maintenance challenges over the years, with recent attention to electrical systems evident through the replacement of multiple subpanels in early 2023 (units 201, 203, 211, 212, 213, 219, 304, 312, and 320). Previous issues included problems with exterior bridges and decks, which were repaired in 2019, and water heating systems, with multiple boiler replacements occurring between 2011 and 2019. The property has experienced several fire safety-related incidents, including multiple alarm system activations, though none resulted in civilian injuries.

A recent sleeping area violation was issued in December 2023, indicating ongoing fire safety compliance requirements. The building's maintenance history shows attention to building envelope issues, including repairs to address dry rot damages and exterior wall maintenance. While there have been various housing complaints over the years, most recent issues have been addressed promptly, including three fire safety violations in 2023 that were either corrected or resolved. Recent tenant complaints have included concerns about construction dust control in 2022 and some plumbing and heating system issues in previous years, though these have generally been addressed through appropriate channels.