I used to do this. I still can, but the cellular tower construction industry is A ****ING MESS.
I would do it because there is good money in it, but don’t expect complete satisfaction. If you have a good, experienced lawyer (Who perhaps used to work in the industry) then you’ll get treated right.
But at the cell company end it’s their job to lead you into a tar pit.
I wouldn’t even think about trying it with out a good lawyer