Thousands of owners who are required to seismic retrofit their properties haven’t completed their retrofits. Retrofits of soft-story buildings must be completed by 2023. About 10% of total apartments have completed their retrofits.

For more info, please read the original article by KFI AM 640:
https://kfiam640.iheart.com/content/2019-08-06-report-thousands-of-la-apartments-havent-been-earthquake-proofed/