110-116 Frederick St, San Francisco, CA 94117

The 40-unit apartment building at 110-116 Frederick Street, owned by Mulberry Tree LP, is a 4-story multi-family residential structure built in 1909 in the Haight Ashbury neighborhood. The property underwent significant improvements in recent years, including the installation of a new fire alarm system with sprinkler monitoring in 2021 costing $90,506, and the addition of five new ADUs (Accessory Dwelling Units) in 2020 per San Francisco Ordinance 162-16, which included complete electrical and plumbing upgrades for each unit. The building successfully completed its mandatory Tier 3 soft-story seismic retrofit program, though it initially faced violations for non-compliance in late 2017, which were resolved by January 2018.

The property has experienced various maintenance and safety issues, particularly in 2019 and 2020, including complaints about common area fire escape locks, a non-functional buzzer system, and concerns about structural cracks during ADU construction. There were also periods of significant work requiring temporary utility shutoffs in October 2019, which generated tenant complaints. Recent fire safety inspections in 2023-2024 have noted some recurring issues with alarm systems and a sleeping area requirement violation as of November 2023, though these have typically been resolved promptly. The building's infrastructure improvements include several plumbing upgrades between 2013-2021, such as sewer line replacements and new heat pump installations.

While the building has had multiple fire alarm activations and system malfunctions recorded between 2006 and 2024, there have been no reported civilian injuries. The property management has faced some ongoing challenges with exterior maintenance, as evidenced by multiple 311 calls throughout 2024 regarding garbage and debris, including instances of abandoned furniture. A notable tenant buyout occurred in October 2015 involving two tenants at 116 Frederick Street for $25,700. The building's recent history shows active management's compliance with major safety requirements, though periodic maintenance issues and system upgrades continue to be a focus.