If your job requires materials, parts, permits, parking, etc., your Pro will advise you in advance to get approval. If approved, these costs will show up on your invoice in the 'Additional Costs' line item.
There may also be a cost to pick up any items required. If there is a pick up fee, your Pro will also let you know prior.
If your job required additional labour (say, for a heavy mirror to be hung), your Pro will advise you in advance to get approval.