Building Code Information

Updates and Provisions

Effective July 1, 2017, the 2015 International Codes for Building, Residential, Plumbing, Mechanical, Fuel Gas and Swimming Pool and Spa will be used and enforced on all construction permits submitted and constructed thereafter in the City of Johnston (as well as the National Electric Code 2014 edition). Generally, city staff made very few changes from previous code amendments and requirements; however a published change in the shear wall bracing provisions of chapter 602.10 of the International Residential Code has been changed and will require your design attention. Additionally, please refer to the State of Iowa Energy Code for changes to return air ducting provisions and system sizing.

If you have questions on the above-described action, please contact the city staff by calling 515-727-7778.

Current Rules:
These codes and special provisions can be updated periodically by amendment passed by the Johnston City Council.