Within ten days of the complaint hearing, the improvement officer shall issue a determination, findings of fact, and order stating the improvement officer’s determination as to whether the subject dwelling, building, structure or premises is unfit for human habitation or other use, the findings of fact supporting the determination, and an order specifying the actions necessary to address any unfitness and a deadline for completing the actions. The determination, findings of fact, and order shall be served and posted as set forth in this section and Chapter 1.50, and if no appeal is filed within the deadline specified, a copy of the determination, findings of fact, and order shall be filed with the Cowlitz County auditor.