1227-1229 21st Ave, San Francisco, CA 94122

This two-unit multi-family residential building, located at 1227-1229 21st Avenue in the Central Sunset neighborhood, is a two-story flats and duplex structure built in 1908 and currently owned by Leung Yun Chuen & Lee Miu S. The property has undergone significant recent improvements, most notably a comprehensive renovation completed in late 2023 that included kitchen and bathroom remodels, along with the conversion of a powder room into a full bathroom, totaling approximately $110,843 in work.

Following this, in early 2024, substantial mechanical upgrades were implemented, including the installation of two new furnaces (one in each unit), a natural gas tankless water heater with revised PVC plumbing, and drainage system improvements with shut-off valves for both units. The building's maintenance history shows attention to essential upgrades, including a 200-amp electrical service panel installation in 2017.

The property has seen various permit activity over the years, with a notable cancelled permit for horizontal and vertical additions dating back to 1991 (estimated cost $260,000) and a street space/sidewalk permit from 2007. While there have been two 311 calls associated with the address in recent years, neither directly pertains to building conditions or resident concerns—one regarding an abandoned vehicle in May 2024 (which was resolved), and another mailing request to SFMTA in November 2021 that remains open. The most recent permitted work suggests significant improvements to both the living spaces and infrastructure systems, indicating active property maintenance and upgrading by the owners.