Howdy, I just registered today on this forum. In case some lawn care professionals were unaware, in Oregon, you need an Oregon Landscape Contractors Board license to repair more that 3 sprinkler heads. Also, to move heads, winterize, or change heads. That work can't be advertised without that license either. Many lawn company owners do not know this. I don't know what Washington, Idaho or California folks need, but that's the way it is for Oregon.