This is your own Building Code inspection.
Sorry I could not write the list here, it's very long.
But one thing you have to do is to take pictures of anything you don't think make sense to you. The builder will tell you these are not problems !
i.e. It's raining now, if you see water on the basement floor, insulation, internal fundation wall under the basement window, take a picture.
Any wood posts (wall studs) have big holes in the middle for wires, take a picture.
A hole beside your steel post in the basement, take a picture.
Check all the insulation around pipes connects to outside, they should all be sealed and insulated.
What should be leveled should be leveled ....;
Take your time, and do be rushed by the builder !
Called the guy on the right up corner if he has time to go with you. But trust your own 6 senses.