Does anyone have experience with foreclosure timeline in Washington state? Also wondering if I'll be liable for past due porperty taxes accumulated after my discharge back in 2009, or will those stay with the house through the foreclosure?

We are gearing up to file CH. 7 in September. We plan on keeping our house, but we are behind on our 1st half property tax installment of about $2500 and the second half + penalties & interest is due early october. I need advice would it be dischargeble after october if we wait to file? Or will...