This is pretty straightforward and helpful news from King County just released today.

Individual residential and commercial taxpayers who pay property taxes themselves, rather than through their mortgage lender, can delay payment until June 1, 2020 due to the COVID-19 (coronavirus) outbreak. Banks and other financial institutions that pay property taxes on behalf of their lending customers will still need to meet the original April 30 deadline.

King County Press Release

If you have questions about property taxes or this order you can contact the King County Treasury at propertytax.customerservice@kingcounty.gov or call 206-263-2890.