1458-1460 18th Ave, San Francisco, CA 94122

The property at 1458-1460 18th Avenue is a two-unit, two-story multi-family residential building located in San Francisco's Inner Sunset neighborhood. Built in 1925 and currently owned by the Koo Family Trust, this flats and duplex structure has undergone several significant improvements in recent years, most notably the installation of a comprehensive fire safety system. In 2019, a new Accessory Dwelling Unit (ADU) was added to the ground floor, followed by the installation of 22 fire sprinklers in 2021 costing over $20,000, with subsequent completion of a sprinkler monitoring system in 2022.

The building underwent substantial interior improvements in 2020, including electrical system upgrades with a new 200-amp service panel, and the construction of new bathroom and kitchen facilities, though some associated permits expired. Additional safety enhancements included the installation of an automatic and manual fire alarm system in 2022. The building's maintenance history shows attention to infrastructure upkeep, with earlier records indicating repairs for dry rot in 1985.

The property has experienced some minor local infrastructure issues, including pavement defects reported in multiple instances (November-December 2020), and there was one notable sewer-related incident in 2019 involving a 4-inch vent line. The surrounding area has had typical urban maintenance issues such as street cleaning needs and parking enforcement matters, with all reported cases being resolved appropriately. The building's recent improvements focus on safety and modernization, particularly through the installation of fire safety systems and updates to residential amenities, while historical records show proper maintenance of basic structural elements.