645-647 Central Ave, San Francisco, CA 94117

The two-unit residential building at 645-647 Central Avenue, located in the Park North neighborhood, is a two-story flats and duplex structure built in 1900 and owned by Randall J & Rita J Mazzei L. The property has undergone several significant improvements in recent years, with the most current modifications being filed in November 2024 for the replacement of wooden guardrails with metal guardrails and the addition of handrails at exterior entry stairs, with an estimated cost of $5,100.

In early 2024, substantial renovations were completed including the removal and installation of new laundry facilities, tankless water heaters, and bathroom improvements in both units, totaling approximately $23,000. The building has seen consistent maintenance of its essential systems, with plumbing updates in 2014 for water heater replacements and venting improvements, and recent electrical upgrades in 2024 including new kitchen circuits and laundry room outlets. Historical records from the building include some notable events from the late 1990s, with complaints about roof leaks, water damage, and unauthorized occupancy that were all resolved promptly.

Earlier renovations included termite remediation work in 2008 involving foundation capping, and a rear stair replacement project from 2000, though this permit expired. The property has experienced recurring street-level maintenance issues as evidenced by multiple 311 calls between 2017 and 2023 regarding general cleaning needs, though these appear to be related to public space rather than internal building conditions. Recent building permits and improvements suggest active management and maintenance of the property, with no recent building-specific complaints or violations on record since the late 1990s.