"Goods" means all things that are movable at the time of identification to a contract for sale. The raw materials required to build this thing are movable, right? This contract involves goods and services, which upon completion of the project will result in a non-movable structure.
You'll get more points if you identify issues rather than just skipping pass them and concluding this is a service contract. In the end, it likely is a service contract. But, again, you don't want to be too conclusory in your response. Issue spotting is not just about spotting solvable issues, but also spotting those that aren't so easily answered.
With that said, I don't think you'd want to be belabor the UCC argument. This problem is best answered by applying common law principles.