133-141 Baker St, San Francisco, CA 94117

The three-story, 10-unit multi-family residential building at 133-141 Baker Street, constructed in 1900, has undergone significant safety upgrades and renovation work in recent years under the ownership of First Class Baker LLC. Most notably, in 2020, the building received comprehensive fire safety improvements including a new fire sprinkler system ($12,000), fire alarm system ($17,426), and electrical upgrades including a new 400-amp service with additional meters ($120,000).

The property completed its mandatory soft-story seismic retrofitting (Tier 3) and addressed various building violations from 2017, including fire safety and electrical system corrections, with all these issues officially abated by August 2017. The building's recent maintenance history shows substantial investment in infrastructure improvements, including the installation of new hydronic fan coil systems, backflow device replacement in 2022 for compliance purposes, and comprehensive plumbing system upgrades. Historical records indicate various routine inspections and some past issues, such as a water intrusion complaint from 2017 and a sewer problem from 2001, though these have been resolved.

The building's permit history shows active management and improvement of the property, particularly focusing on safety upgrades, with no current active violations. Recent 311 calls from December 2024 primarily relate to external issues such as graffiti and encampments in the vicinity, rather than building-specific problems. The property's conversion of ground floor spaces to add accessory dwelling units (ADUs) has been completed, with the addition work properly permitted and inspected.