Where overruns usually begin
They normally start when the booking assumes a simpler loading route than the property actually has. Every extra trip then takes longer than planned.
Common avoidable delays
Late keys, blocked loading space, under-declared inventory and awkward access all create delay that feels small at first but builds across the whole job.
How to cut risk early
Be specific about the entrance, the stairs, the stopping point and any large items before the quote is finalised.