Luckily it seems they didn't touch the actual plumbing too much, but the aesthetic things around the plumbing. Like the tile around the shower faucet handle was done poorly and there's gaps that need filling in. Or behind one remodeled sink they cut a huge hole in the drywall that's almost star shaped somehow. But the plumbing connections at least seem to be done correctly.

Good tips for the tools. I'm lucky enough to live by a tool library so I'm checking there for anything I don't have and I'll only use it once or twice.