If the director fails to take action within sixty days after an application for a variance is made, or if the department fails to enter a final order or determination within sixty days after the final argument in hearing on appeal, the person seeking the action may treat the failure to act as a grant of the requested variance, or of a finding favorable to the respondent in hearing on appeal, as the case may be.
Iowa Code § 455B.147
C83, § 455B.147
86 Acts, ch 1245, §1899, 1899B; 93 Acts, ch 137, §6