1331-1333 40th Ave, San Francisco, CA 94122

The 3-unit, 1-story multi-family residential building at 1331-1333 40th Avenue in the Outer Sunset, owned by the Chiu Family Trust since 2007, has undergone significant improvements in recent years, most notably the comprehensive sprinkler system installation completed in 2023, which included adding 41 new sprinkler heads throughout the building and installing a monitoring system. The property has seen considerable renovation work in 2021-2023, including window replacements, kitchen and bathroom remodels, and interior layout reconfigurations.

Several building violations were addressed in 2022-2023, including lead paint hazards and a notable complaint about unauthorized construction work in early 2023, though most violations appear to have been resolved, with the exception of a front yard setback issue from 2015. Infrastructure upgrades have included a 200-amp electrical service update in late 2022 and new HVAC systems in 2023. The building's maintenance history shows attention to various systems, including plumbing upgrades for three kitchens, bathrooms, and washer/dryer installations in early 2023.

While there have been multiple complaints regarding building conditions over the years, including issues with paint, yard maintenance, and some exterior work concerns, most recent permits and improvements suggest a focus on modernization and safety upgrades. The property has experienced typical urban issues such as parking violations and occasional infrastructure concerns like manhole and sewer issues, as evidenced by recent 311 calls. The building's fire safety systems have been substantially improved with the recent sprinkler upgrades, and records show regular maintenance and upgrading of essential systems, though some historical permits from the 1980s and 1990s are now expired.