Statute of limitations on deposit dispute in WA state?

We moved out of a rental house just over a year ago, and when we did, the landlord did not return our deposit within the required time period. He did finally send a check for a small part of our deposit and an itemized list of "damages", which were ridiculous. He did not do a move-in or move-out check list with us, we left the house in better condition than when we moved in, and he also owes us additional money for child care that we provided. I know that the fact that he didn't return the deposit in a timely way means he forfeits it, so I'm sure we would get the money if we took him to small claims court. For various reasons, it took us a while to decide that we want to pursue this. It has been a year (and a couple weeks). Is there a time limit on this sort of claim, or can we still file?