Construction law comes up very often in my commercial collections practice. A lot of it is lien enforcement.
To have a good case, you need to build a good foundation. Meaning, you need to do the proper paperwork. Get a good contract before you start.
Construction law can be complex with all the players and real estate involved. For instance, you have general contractors hiring sub-contractors who then hire sub-contractors who then hire sub-contractors. And much of the time I have found that most agreements between the sub-contractors are verbal. Nothing in writing.
The better you document, the better your chances are going to be in getting paid for the work you performed.