W. Va. Code § 15A-10-10
The written order of the State Fire Marshal made pursuant to §15A-10-9 of this code shall be served by delivering a true copy thereof to such owner or, if the owner is absent from the state or his or her whereabouts be unknown to the State Fire Marshal, by mailing a true copy thereof by certified mail to the said owner's last known post-office address, or if no such address be known, then by certified mail to said owner in care of general delivery at the post office serving the community in which said premises lie. Delivering or mailing such order shall be accomplished within five days of the date of issuance of such order. In the event it is necessary to mail a copy of such order as aforesaid, the officer mailing the same shall also, within five days of the date of issuance of such order, post a true copy thereof in a conspicuous place on the door or other prominent entrance to said premises.
W. Va. Code § 15A-10-10