What is the legal age to rent a house in Washington State?|134029

I_m writing a story and I would like to know what the legal age to rent a house is in Washington (state). I know that the legal age to drink alcohol is 21, but what_s the legal age to rent a house. Because in Australia (where I_m from) you can drink at 18, but rent at 16. If you could help me, that would be much appreciated.

18, unless you are an emancipated minor and you have consent from a legal guardian.