1059 Union St, San Francisco, CA 94133

1059 Union Street is a 16-unit, 3-story multi-family residential building constructed in 1986, currently owned by Trinity G2 Holding LLC. The building's recent history has been marked by several boiler-related issues, with the most current situation being a fire alarm verification of decibel levels in sleeping rooms initiated in March 2024, and a sleeping area requirement violation issued in December 2023 that remains open. The boiler, specifically serial number 942F04-03740, has generated multiple compliance concerns, including a December 2023 complaint regarding an expired operating permit that was abated in January 2024, and a March 2023 complaint about a single wall heat exchanger.

The building underwent significant maintenance in 2017 with a $120,000 reroofing project, and has had routine inspections dating back to 1997, revealing periodic issues that have typically been resolved promptly. The property's permit history shows regular maintenance and compliance efforts, including the recent decommissioning of the boiler in December 2023 and various street space permits in 2017. A notable historical milestone was the 1977 completion of the 16-unit apartment construction, following an earlier 1983 demolition.

The building has experienced some tenant-reported issues in recent years, including concerns about garbage and debris (2025), toters being left out (2023), and various maintenance matters. Fire safety has been a recurring focus, with multiple fire inspections noting issues such as the need for appropriate fire extinguishers and smoke detector concerns, though these violations were typically addressed within a reasonable timeframe. The building's management generally responds to violations and permits promptly, as evidenced by the resolution of most recent complaints within a few months.