Iowa Code § 499B.20

After April 25, 2000, an existing structure shall not be converted to a horizontal property regime unless the converted structure meets local city or county, as applicable, building code requirements in effect on the date of conversion or the state building code requirements, as adopted pursuant to section 103A.7, if the local city or county does not have a building code. For purposes of this section, if the structure is located in a city, the city building code applies and if the structure is located in the unincorporated area of the county, the county building code applies.