1307-1311 Mason St, San Francisco, CA 94133

The three-story multi-family residential building at 1307-1311 Mason Street in Nob Hill, owned by Silver Sandy LLC, has undergone significant improvements and maintenance since its construction in 1910. The property has seen substantial recent upgrades, including a major interior remodel of the commercial space in 2022 valued at $175,000 that incorporated ADA-compliant features, followed by foundation revisions in 2023. Comprehensive utility upgrades were completed in 2021, featuring a 400-amp electrical service upgrade with three meters, rewiring of the commercial space, and the installation of a tankless water heater.

Additional plumbing improvements included new drains, traps, and ground floor plumbing for ADA-compliant facilities in 2023, along with the installation of a heat pump system later that year. The building's maintenance history shows regular upkeep, including reroofing projects in 1989 and 2018, window replacements in 2021, and various kitchen and bathroom remodels. Street-level improvements have been made to comply with current standards, including PG&E meter accessibility modifications.

While there have been some infrastructure-related incidents, such as a water main issue in 2021 and a collapsed sidewalk report in 2019, these were promptly addressed. The property has maintained proper regulatory compliance, with no outstanding planning code complaints or building violations on record. Recent 311 calls primarily relate to external issues such as street lighting and waste management, which are municipal responsibilities rather than building-specific concerns.