770-772 18th Ave, San Francisco, CA 94121

The 770-772 18th Avenue property is a four-story duplex multi-family residential building constructed in 1913 in San Francisco's Central Richmond neighborhood, currently owned by Lei Ai Ren & Wu Shu Zhen. The building underwent significant renovations in 2007-2009, including the installation of a comprehensive fire sprinkler system throughout the building ($32,500), complete electrical upgrades (200-amp service, lighting, and receptacles), and bathroom and laundry area modifications.

Several building permits were properly completed and received final inspections during this period, though there were some permit renewals required in 2009 for previous work completed in 2007 and 2008. Of particular note are two significant planning and compliance issues: a complaint was filed in May 2009 regarding an allegedly illegal third unit that was ultimately abated by June 2009, and there was a 2007 complaint about possible unauthorized height modifications.

The building has experienced at least one notable maintenance issue in recent years, with a sewage backup incident reported in March 2022 that was subsequently resolved by PUC Sewer Operations. The property's renovation history includes addressing various regulatory requirements, such as zoning approvals for a four-foot rear setback modification, though there were some expired permits in the records requiring follow-up procedures. While the building underwent extensive modernization, particularly regarding safety systems like sprinklers, there were occasional compliance challenges that required attention.