Scary looking hairline crack across the ceiling

[borlorjee]

I know hairline cracks are just cosmetic cracks due to settling but this crack that I have is in the middle of my room and runs across the whole ceiling from one side to another. It looks so terrifying every time I look up and I haven't even moved into my new build.

Could someone help me have a look at this to reassure me that it's nothing to worry about? And for context, I don't have anything stored in my attic.

Thank you!

[New Home Expert]

First of all, any crack is a defect. Secondly it is not due to "settling" it is due to movement or drying out.

Your ceiling crack is strange as it is continuous. Ceiling boards should be staggered.
Secondly, the joint should be taped and jointed and they are unlikely to crack.

So what is the cause?  My guess is the water tank in the roof space may not be correctly supported and positioned. Another reason could be the board edges do not line up with a ceiling joist or noggin.

Youi really must insist this is looked at and the cause addressed before you legally complete. Do not be pressured into completing for Christmas!
Aa always my advice is to have your home professionally snagged and inspected before you legally complete. You now have a legal right to do so!

Who is the housebuilder?