522 Paris St, San Francisco, CA 94112

The property at 522 Paris Street in the Excelsior neighborhood is a two-unit, two-story multi-family residential building constructed in 1923, currently owned by Woo Yiu Man & Chan Chin Yu. The building has experienced several significant issues in recent years, most notably multiple active code violations and complaints from 2022 related to heating systems and illegal unit status. In February-March 2022, the building received Notices of Violation (NOV) for requiring heat in each occupied habitable room capable of maintaining a minimum temperature of 70°F, along with requirements for non-tamperable temperature-sensing devices.

A critical NOV filed in March 2022 declared the property as legally designated R-3, two-family dwelling on two floors, while identifying unauthorized modifications including an illegal dwelling unit with kitchen and bath behind the garage, unapproved wiring and plumbing, lack of required smoke detectors, inadequate emergency egress from sleeping rooms, and unauthorized change of use. The building has undergone several permitted modifications over the years, including a significant $112,523 project in 2022 to convert existing room space into an ADU (Accessory Dwelling Unit) with bedroom, bathroom, and kitchen. Earlier modifications include ground floor improvements in 1996, and plumbing updates such as 4-inch water pipe replacement in 2017.

Historical records show repairs for dry rot in 1986 affecting front and rear stairs, though this permit was ultimately cancelled. The building's maintenance history includes multiple 311 calls between 2020 and 2024, with issues ranging from sewage backup in December 2022 to several parking-related complaints. While recent permits indicate attempts to address code compliance issues, including a filed revision in December 2024 regarding occupancy and fire safety requirements, numerous active violations remain unresolved as of October 2023, which could impact resident comfort and safety.