1821 Cabrillo St, San Francisco, CA 94121

1821 Cabrillo Street is a three-story multi-family residential building constructed in 2001, currently classified as a Flats & Duplex property with two legal units. The building's history has been marked by numerous permit applications and violations related to unauthorized unit conversions and modifications. Most recently, in June 2024, a permit was filed to add a kitchen to the first floor to create an ADU, which follows a pattern of attempts to establish additional dwelling units in the building.

Significant enforcement actions occurred between 2008 and 2020 regarding unauthorized unit conversions, including a 2008 violation for an illegal ground floor unit with unapproved construction, plumbing, and electrical work, and a 2019 violation concerning an illegal fourth-floor kitchen and unauthorized modifications. These violations resulted in multiple permits for restoration work, including a completed permit in 2020 to remove the illegal fourth-floor kitchen and restore the original stair entrance. The building has also undergone several maintenance improvements, including a 2017 permit for replacing siding on the back and left sides with hardie plank siding.

The property has experienced various residential quality challenges over the years, particularly in 2008 when multiple complaints documented mold, pest infestations, and plumbing issues, all of which were subsequently abated. Fire safety records show minimal incidents, with the most notable being two alarm system activations in 2006 and 2007, one of which resulted in corrected conditions. Recent records from 2024 primarily consist of parking enforcement and waste management issues, including reports of toters being left out and illegal parking, which are generally not significant concerns affecting resident safety or building integrity. The current status of the building shows ongoing efforts to comply with ADU regulations, though the history of unauthorized modifications suggests careful attention should be paid to future changes and their impact on unit legality and building systems.