The best answer is as soon as possible. While we may still be able to fit you in our schedule if you call in the last minute, this is by no means a guarantee. So a good practice is to book your move the moment you know exactly when you’ll be moving. In terms of actual numbers, a 4-week headroom prior to the move is required for most moves. However, if you decide to move on a weekday during a less busy month, booking 2 weeks in advance is going to be alright.