Any home built by DR Horton or DSLD (American contractors) are like this.
The homes look fine, but nothing is "bubble level". I had my attic ladder fall out of the ceiling due to some overweight things (and people) using it a lot to save things from some flood waters. We re-installed a new ladder, and made it "bubble level" which makes it now off from the ceiling itself. Now I'm working on filling the gaps between the ceiling and ladder frame in certain areas.
If you're hanging some pictures, eye level is fine. If you're doing anything else, please use a bubble.