Washington Revised Code Title 36. Counties § 36.70C.060. Standing

(a) The land use decision has prejudiced or is likely to prejudice that person;

(b) That person's asserted interests are among those that the local jurisdiction was required to consider when it made the land use decision;

(c) A judgment in favor of that person would substantially eliminate or redress the prejudice to that person caused or likely to be caused by the land use decision; and

(d) The petitioner has exhausted his or her administrative remedies to the extent required by law.