The City of Johnston requires that all electrical, plumbing and mechanical contractors licensed through the State of Iowa be registered with the Johnston Building Department
To register, complete a registration form (PDF)
and submit it with a copy of your state license to the Building Department.
This form can be used for all trade license registration. There is no fee, but registration is required before a trade permit can be issued to a contractor.
Every contractor must register new licenses or renew existing licenses upon expiration or issuance.