631 41st Ave, San Francisco, CA 94121

The two-story multi-family residential building at 631 41st Avenue in San Francisco's Outer Richmond neighborhood, owned by Knowland G & Lika Yu Ng Rev, is a 5-unit apartment building constructed in 1962. The property has undergone several significant safety and maintenance improvements over the years, with the most recent major work being the installation of the fire-rated windows on the southern property line in 2015 and completion of the soft-story retrofit program in 2015 (with a cost of $50,000).

Other notable improvements include re-roofing projects in 2017 ($8,000) and earlier in 1992, as well as structural repairs including the replacement of a metal beam and posts in 2008 ($4,000), and treatment of dry rot in 2003 ($4,000). The building experienced multiple maintenance issues in the early 2000s, particularly during 2001-2002, when various violations were recorded related to security, fire safety, and water damage, most of which were abated by July 2001. More recent history shows the property has maintained its structural integrity and safety requirements, with no active building violations on record since 2002.

The building's soft-story retrofit was completed in compliance with San Francisco's mandatory program, demonstrating adherence to seismic safety requirements. The most recent building-related issues have been primarily external to the structure, with multiple parking violations recorded in 2023-2024, and the latest infrastructure concern being a sewage back-up incident in December 2024, which was promptly resolved by the Public Utilities Commission. The property has undergone periodic maintenance and upgrades consistent with building codes and safety requirements, though historical records indicate the building faced significant maintenance challenges in the early 2000s, particularly concerning water damage and security systems.