San Francisco needs more housing in the future than ever before. As a consequence, the total housing development need is expected to grow up to 25% in the upcoming years, contrary to the current housing requirement which is 12%. Looking at the economy and the rising eviction fears, thousands of applicants are struggling to find affordable housing. Here is a report describing the whole story - http://www.sfchronicle.com/opinion/article/San-Francisco-Don-t-kill-the-affordable-6705497.php