In Glaski v. Bank of America, N.A., ___ Cal.App.4th ___ (Jul. 31, 2013; pub. ord. Aug. 8, 2013), an individual wrongful foreclosure action, the Fifth District has a single paragraph addressing the UCL:
Based on the foregoing, we conclude that Glaski’s fourth cause of action has stated a claim for wrongful foreclosure. It follows that Glaski also has stated claims for quiet title (third cause of action), declaratory relief (fifth cause of action), cancellation of instruments (eighth cause of action), and unfair business practices under Business and Professions Code section 17200 (ninth cause of action). (See Susilo v. Wells Fargo Bank, N.A. (C.D.Cal. 2011) 796 F.Supp.2d 1177, 1196 [plaintiff’s wrongful foreclosure claims served as predicate violations for her UCL claim].)
Slip op. at 26-27. The citation to a federal district court decision suggests that no other California Court of Appeal opinion has addressed whether conduct constituting wrongful foreclosure (which is a catch-all term that can encompass a variety of defects in the foreclosure process, including statutory violations) can form the predicate for a UCL claim. There's no reason why it shouldn't, particularly after Rose and Zhang reconfirmed the broad scope of the UCL's "unlawful" prong.