The proceeding in the district court may be brought on for hearing and determination by the state fire marshal or by any other party thereto at any time after thirty days have elapsed after the completion of service upon all the parties appearing to be interested therein. In the order setting the time for hearing, the court shall order such notice of the time and place of the hearing to be given to all parties to such proceeding as it shall deem proper. It is not necessary to give notice of such hearing to any person upon whom service of the order and notice described in section 18-01-20 has been made if such person has not appeared in said proceeding.