Geoff
I am guessing you want somebody who can do pre-job drawings for your wrought iron business?
I have done a lot of architectural drawing and artist impressions of new buildings and I don't charge much.
Below is one I did few years ago for some guy called Bush, don't remember his first name.
As you can see it is good work. He wanted to "keep out the Eye-Rackies" (whoever they are) so I made it high enough to keep them out, but there is a lake nearby so I made it low enough that the kiters didn't get stuck on it
here's a Free hand-sketch i did.
I don't know why anyone would pay for a hand-sketch. they're really easy and fun to do yourself
