RCW 64.16.005: Individuals' who are not a citizen or national of the United States rights and interests in lands same as native citizens'.

Any noncitizen may acquire and hold lands, or any right thereto, or interest therein, by purchase, devise, or descent; and he or she may convey, mortgage, and devise the same, and if he or she shall die intestate, the same shall descend to his or her heirs, and in all cases such lands shall be held, conveyed, mortgaged, or devised, or shall descend in like manner and with like effect as if such noncitizen were a native citizen of this state or of the United States.