Yes, you can appeal.  You must do so in the same court that granted the judgment.  It will probably go to a new judge.Appeals of unlawful detainer actions are goverened by the following [California Code of Civil Procedure 1176, 1778; Anchor Marine Repair Co. v Magnan (2001) 93 CA4th 525, 528–530.] There is a helpful site here: http://www.dca.ca.gov/publications/landlordbook/evictions.shtml