It depends on how you get to do the snag, for my more recent move my brother in law snagged for me, it was a tiny list and the few issues were fixed in two days, at which point I completed contracts and got in within a week. But if you have a large snag and want 80-90% of it completed then it may take longer, if you snagger needs to revisit to check the work it may take even longer again. Dont tell the builder this as he will know you are over a barrel and may not address any minor issues.