4227-4229 Lincoln Way, San Francisco, CA 94122

The property at 4227-4229 Lincoln Way, a two-unit residential building located in San Francisco's Outer Sunset neighborhood, has undergone significant changes since its construction in 1942. Most notably, there was a substantial illegal unit conversion incident in 2001-2003, where the ground floor and garage were converted into habitable space with a full kitchen, bathroom, and bedroom, plus a secondary structure built in the backyard. This resulted in multiple building violations including lack of proper egress, inadequate fire safety features, unapproved electrical/plumbing work, and life safety concerns.

All violations were eventually abated by May 2003, when the illegal units were removed. The building has seen several improvements in recent years, including a major electrical upgrade in 2022 that increased the panel capacity from 30 to 125 amps and added modern features like GFCI protection and appliance circuits. Two solar PV systems were installed in 2014, contributing to the building's sustainability.

The property has required various street space permits and underwent multiple address verification processes between 2007-2008, suggesting some administrative adjustments to unit identification. Recent municipal service requests (2024-2025) have primarily involved street maintenance issues, with multiple reports of abandoned furniture and debris, as well as tree maintenance concerns. Two open cases from late 2024 involve a potentially damaged tree and noise complaints, while another case about buffer request service remains open.