Yes. Contrary to popular belief, not a single housing unit (at any income level) has been torn down in the Mission, for any reason, since at least 2010 (as far back as online records go).

Source: http://rationalconspiracy.com/2015/05/25/new-york-times-make...

Also, I should note that, contrary to popular belief, there's not much new luxury housing in the Mission. In fact, there's not much new housing in the Mission at any economic level. In 2014 (the last year for which data is available), there were a grand total of 74 units built in the entire Mission. Not 74 buildings. 74 units.

Source: http://www.sf-planning.org/ftp/files/publications_reports/20...