Where hidden costs usually come from
Most hidden costs in Bevois Valley are really hidden time. Busy kerbs, short-stay pressure and evening activity that can push the van onto a side street, slow key handover and narrow halls, on-street loading friction and repeated carries from the nearest legal stop are the patterns that usually push a small move past the first estimate.
What prevents the drift
Share the true loading route early, confirm when keys are available and be clear about any stairs, gates, lifts or internal distance. A short job stays cheaper when none of those details are discovered on the doorstep.