337 28th Ave, San Francisco, CA 94121

The three-story, two-unit multi-family residential building at 337 28th Avenue in the Central Richmond neighborhood, owned by Lei Crystal, has a complex and notable history since its construction in 1900. Most significantly, during 2003-2010, the property underwent substantial renovation work following complaints of unpermitted construction, with violations filed in September 2003 regarding unauthorized work, including foundation and structural modifications, as well as unauthorized vertical and horizontal additions. These issues were ultimately addressed through the legalization process in 2006-2008, which included substantial improvements such as foundation replacement, new electrical systems, and fire safety upgrades including sprinkler system installation, at a cost of $400,000. Subsequent inspections in 2013 and 2012 raised concerns about possible illegal units, unauthorized modifications, and various habitability issues, including electrical hazards, blocked exits, and pest infestations.

The building has experienced recurring infrastructure challenges, with multiple plumbing issues documented between 2011-2015, including sewage backups. Recent complaints from August 2023 reference concerns about unrecorded property line windows and mechanical ventilation affecting neighboring properties. While many historical violations have been resolved, including a 2013 fire safety issue regarding blocked exits, and a 2012 complaint about multiple unauthorized units was abated, the property's history suggests ongoing concerns about code compliance and proper permitting procedures. The building's systems have been significantly upgraded over the years, as evidenced by multiple completed permits for electrical, plumbing, and fire safety improvements, though several earlier permits from 2004-2005 remain in "Expired" status.

A 2008 complaint regarding the building's structural appearance was resolved by 2010, and various historical complaints about unauthorized construction have been officially abated. The property has undergone significant upgrades to address safety concerns, including comprehensive electrical rewiring, new plumbing systems, and fire safety installations. However, the building's history shows a pattern of unauthorized modifications and permit violations, particularly during the 2003-2006 period, though most of these have been subsequently addressed through proper permitting and inspection processes. Recent complaints suggest ongoing monitoring of compliance with current building codes and regulations is warranted.