In an ideal world, new home buyers should be able to have their homes inspected at each stage of construction, just as the warranty providers are supposed to. In reality, the Health and Safety card is played so you will only be allowed to have your home professionally inspected and snagged after it is 100% completed.
Otherwise the list would be a list of outstanding works, things that could not be checked, rather than defective works.
But be aware, most builders try to stop buyers having snagging inspections until after legal completion when they have all your money and you have moved in.
So get your solicitor to insist on your snagging inspector carrying out the inspection before legal completion.
Who is your housebuilder?