This just crossed our desk in a case we’ve been following (link includes the numerous merits and amicus briefs filed in the case), the California Supreme Court’s opinion, authored by the Chief Justice in California Building Industry Ass’n v. City of San Jose, No. S212072 (June 15, 2015).
The bottom line is the court agreed that rational basis review is the applicable standard:
As noted at the outset of this opinion, for many decades California statutes and judicial decisions have recognized the critical need for more affordable housing in this state. Over the years, a variety of means have been advanced and undertaken to address this challenging need. We emphasize that the legal question before our court in this case is not the wisdom or efficacy of the particular tool or method that the City of San Jose has adopted, but simply whether, as the Court of Appeal held

