Look here:
http://www.experioronline.com/examsbystate.htm and here
http://www.experioronline.com/iaconstruction.htm By comparison to other states(New Jersey, for example),it seems that Iowa does not have state licensing.
PA is licensed at the local level, and it is very lax.
[This message has been edited by Redsy (edited 09-20-2005).]